Now Stable

"New on the Web": For a given set of browsers, what APIs became stable and when, ordered reverse chronologically.

It's a great source of information for posts like this

Example Comparisons
Browsers
Features

Stable APIs

Below is a list of features that are in Firefox, Safari, and Edge, ordered reverse chronologically by when they became stable (i.e, available in the last browser).

2026/3

API First Browser Date Last Browser Date Days Notes
api.ShadowRoot.referenceTarget Edge2/6/2025 Firefox3/24/2026411

2026/2

API First Browser Date Last Browser Date Days Notes
api.Location.ancestorOrigins 📋Safari7/25/2012 Firefox2/24/20264962
Deno: This value is always empty in Deno.
api.TrustedHTML 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedHTML.toJSON 📋Edge4/15/2021 Firefox2/24/20261776
api.TrustedHTML.toString 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedScript 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedScript.toJSON 📋Edge4/15/2021 Firefox2/24/20261776
api.TrustedScript.toString 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedScriptURL 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedScriptURL.toJSON 📋Edge4/15/2021 Firefox2/24/20261776
api.TrustedScriptURL.toString 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicy 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicy.createHTML 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicy.createScript 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicy.createScriptURL 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicy.name 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicyFactory 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicyFactory.createPolicy 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicyFactory.defaultPolicy 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicyFactory.emptyHTML 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicyFactory.emptyScript 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicyFactory.getAttributeType 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicyFactory.getPropertyType 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicyFactory.isHTML 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicyFactory.isScript 📋Edge5/21/2020 Firefox2/24/20262105
api.TrustedTypePolicyFactory.isScriptURL 📋Edge5/21/2020 Firefox2/24/20262105
api.trustedTypes 📋Edge5/21/2020 Firefox2/24/20262105
api.HTMLElement.focus.options_focusVisible_parameter Firefox8/23/2022 Edge2/14/20261271
api.LargestContentfulPaint.paintTime 📋Firefox6/24/2025 Edge2/14/2026235
api.LargestContentfulPaint.presentationTime 📋Firefox6/24/2025 Edge2/14/2026235
Firefox: This property is exposed, but always returns null.Firefox for Android: This property is exposed, but always returns null.Safari: This property is exposed, but always returns null.Safari on iOS: This property is exposed, but always returns null.WebView on iOS: This property is exposed, but always returns null.
javascript.builtins.Map.getOrInsert 📋Firefox10/14/2025 Edge2/14/2026123
javascript.builtins.Map.getOrInsertComputed 📋Firefox10/14/2025 Edge2/14/2026123
javascript.builtins.WeakMap.getOrInsert 📋Firefox10/14/2025 Edge2/14/2026123
javascript.builtins.WeakMap.getOrInsertComputed 📋Firefox10/14/2025 Edge2/14/2026123

2026/1

API First Browser Date Last Browser Date Days Notes
api.Blob.bytes 📋Firefox7/9/2024 Edge1/21/2026561
api.Performance.interactionCount 📋Firefox10/14/2025 Edge1/21/202699
api.SVGAElement.hreflang 📋Firefox6/26/2018 Edge1/21/20262766
api.SVGAElement.type 📋Firefox6/26/2018 Edge1/21/20262766
api.CSSPositionTryDescriptors 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.align-self 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.alignSelf 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.block-size 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.blockSize 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.bottom 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.height 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.inline-size 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.inlineSize 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.inset 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.inset-block 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.inset-block-end 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.inset-block-start 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.inset-inline 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.inset-inline-end 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.inset-inline-start 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.insetBlock 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.insetBlockEnd 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.insetBlockStart 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.insetInline 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.insetInlineEnd 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.insetInlineStart 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.justify-self 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.justifySelf 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.left 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.margin 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.margin-block 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.margin-block-end 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.margin-block-start 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.margin-bottom 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.margin-inline 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.margin-inline-end 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.margin-inline-start 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.margin-left 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.margin-right 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.margin-top 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.marginBlock 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.marginBlockEnd 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.marginBlockStart 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.marginBottom 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.marginInline 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.marginInlineEnd 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.marginInlineStart 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.marginLeft 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.marginRight 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.marginTop 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.max-block-size 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.max-height 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.max-inline-size 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.max-width 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.maxBlockSize 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.maxHeight 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.maxInlineSize 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.maxWidth 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.min-block-size 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.min-height 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.min-inline-size 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.min-width 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.minBlockSize 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.minHeight 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.minInlineSize 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.minWidth 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.place-self 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.placeSelf 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.position-anchor 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.position-area 📋Edge9/19/2024 Firefox1/13/2026481
api.CSSPositionTryDescriptors.positionAnchor 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.positionArea 📋Edge9/19/2024 Firefox1/13/2026481
api.CSSPositionTryDescriptors.right 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.top 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryDescriptors.width 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryRule 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryRule.name 📋Edge5/17/2024 Firefox1/13/2026606
api.CSSPositionTryRule.style 📋Edge5/17/2024 Firefox1/13/2026606
api.Document.activeViewTransition 📋Edge10/31/2025 Firefox1/13/202674
api.Document.startViewTransition.options_parameter 📋Edge5/17/2024 Firefox1/13/2026606
api.Document.startViewTransition.options_parameter.types_parameter 📋Edge5/17/2024 Firefox1/13/2026606
api.Document.startViewTransition.options_parameter.update_parameter 📋Edge5/17/2024 Firefox1/13/2026606
api.HTMLButtonElement.commandForElement.implicit_anchor_reference 📋Edge4/4/2025 Firefox1/13/2026284
api.HTMLButtonElement.popoverTargetElement.implicit_anchor_reference 📋Edge2/6/2025 Firefox1/13/2026341
api.HTMLElement.showPopover.options_source_parameter.implicit_anchor_reference 📋Edge2/6/2025 Firefox1/13/2026341
api.HTMLElement.togglePopover.options_source_parameter.implicit_anchor_reference 📋Edge2/6/2025 Firefox1/13/2026341
api.HTMLInputElement.popoverTargetElement.implicit_anchor_reference 📋Edge2/6/2025 Firefox1/13/2026341
api.NavigateEvent 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigateEvent.NavigateEvent 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigateEvent.canIntercept 📋Edge9/1/2022 Firefox1/13/20261230
api.NavigateEvent.destination 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigateEvent.downloadRequest 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigateEvent.formData 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigateEvent.hasUAVisualTransition 📋Edge10/13/2023 Firefox1/13/2026823
api.NavigateEvent.hashChange 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigateEvent.info 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigateEvent.intercept 📋Edge9/1/2022 Firefox1/13/20261230
api.NavigateEvent.navigationType 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigateEvent.scroll 📋Edge9/1/2022 Firefox1/13/20261230
api.NavigateEvent.signal 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigateEvent.sourceElement 📋Edge4/4/2025 Firefox1/13/2026284
api.NavigateEvent.userInitiated 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.activation 📋Edge3/22/2024 Firefox1/13/2026662
api.Navigation.back 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.canGoBack 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.canGoForward 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.currentEntry 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.currententrychange_event 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.entries 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.forward 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.navigate 📋Edge5/31/2022 Firefox1/13/20261323
Chrome: Chrome allows javascript: URLs when calling navigate(), contrary to the specification (bug 439994590).Chrome Android: Chrome Android allows javascript: URLs when calling navigate(), contrary to the specification (bug 439994590).Edge: Edge allows javascript: URLs when calling navigate(), contrary to the specification (bug 439994590).Quest Browser: Quest Browser allows javascript: URLs when calling navigate(), contrary to the specification (bug 439994590).Opera: Opera allows javascript: URLs when calling navigate(), contrary to the specification (bug 439994590).Opera Android: Opera Android allows javascript: URLs when calling navigate(), contrary to the specification (bug 439994590).Samsung Internet: Samsung Internet allows javascript: URLs when calling navigate(), contrary to the specification (bug 439994590).WebView Android: WebView Android allows javascript: URLs when calling navigate(), contrary to the specification (bug 439994590).
api.Navigation.navigate_event 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.navigateerror_event 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.navigatesuccess_event 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.reload 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.transition 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.traverseTo 📋Edge5/31/2022 Firefox1/13/20261323
api.Navigation.updateCurrentEntry 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationActivation 📋Edge3/22/2024 Firefox1/13/2026662
api.NavigationActivation.entry 📋Edge3/22/2024 Firefox1/13/2026662
api.NavigationActivation.from 📋Edge3/22/2024 Firefox1/13/2026662
api.NavigationActivation.navigationType 📋Edge3/22/2024 Firefox1/13/2026662
api.NavigationCurrentEntryChangeEvent 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationCurrentEntryChangeEvent.NavigationCurrentEntryChangeEvent 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationCurrentEntryChangeEvent.from 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationCurrentEntryChangeEvent.navigationType 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationDestination 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationDestination.getState 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationDestination.id 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationDestination.index 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationDestination.key 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationDestination.sameDocument 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationDestination.url 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationHistoryEntry 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationHistoryEntry.dispose_event 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationHistoryEntry.getState 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationHistoryEntry.id 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationHistoryEntry.index 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationHistoryEntry.key 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationHistoryEntry.sameDocument 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationHistoryEntry.url 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationTransition 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationTransition.finished 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationTransition.from 📋Edge5/31/2022 Firefox1/13/20261323
api.NavigationTransition.navigationType 📋Edge5/31/2022 Firefox1/13/20261323
api.ServiceWorker.ecmascript_modules Edge5/27/2021 Firefox1/13/20261692
Safari: Nested workers support was introduced in Safari 15.5.Safari: Script loading in nested workers was introduced in Safari 16.4.Safari on iOS: Nested workers support was introduced in Safari on iOS 15.5.Safari on iOS: Script loading in nested workers was introduced in Safari on iOS 16.4.
api.ViewTransition.types 📋Edge5/17/2024 Firefox1/13/2026606
api.ViewTransitionTypeSet 📋Edge5/17/2024 Firefox1/13/2026606
api.ViewTransitionTypeSet.@@iterator Edge5/17/2024 Firefox1/13/2026606
api.ViewTransitionTypeSet.add Edge5/17/2024 Firefox1/13/2026606
api.ViewTransitionTypeSet.clear Edge5/17/2024 Firefox1/13/2026606
api.ViewTransitionTypeSet.delete Edge5/17/2024 Firefox1/13/2026606
api.ViewTransitionTypeSet.entries Edge5/17/2024 Firefox1/13/2026606
api.ViewTransitionTypeSet.forEach Edge5/17/2024 Firefox1/13/2026606
api.ViewTransitionTypeSet.has Edge5/17/2024 Firefox1/13/2026606
api.ViewTransitionTypeSet.keys Edge5/17/2024 Firefox1/13/2026606
api.ViewTransitionTypeSet.size Edge5/17/2024 Firefox1/13/2026606
api.ViewTransitionTypeSet.values Edge5/17/2024 Firefox1/13/2026606
api.Window.navigation 📋Edge5/31/2022 Firefox1/13/20261323
javascript.statements.import.service_worker_support Edge5/27/2021 Firefox1/13/20261692

2025/12

API First Browser Date Last Browser Date Days Notes
api.Animation.overallProgress 📋Edge2/6/2025 Safari12/12/2025309
api.CaretPosition 📋Firefox4/2/2013 Safari12/12/20254637
api.CaretPosition.getClientRect 📋Firefox8/6/2013 Safari12/12/20254511
api.CaretPosition.offset 📋Firefox4/2/2013 Safari12/12/20254637
api.CaretPosition.offsetNode 📋Firefox4/2/2013 Safari12/12/20254637
api.CommandEvent 📋Edge4/4/2025 Safari12/12/2025252
api.CommandEvent.CommandEvent Edge4/4/2025 Safari12/12/2025252
api.CommandEvent.command 📋Edge4/4/2025 Safari12/12/2025252
api.CommandEvent.source 📋Edge4/4/2025 Safari12/12/2025252
api.Document.caretPositionFromPoint 📋Firefox4/2/2013 Safari12/12/20254637
api.Document.scrollend_event 📋Firefox1/17/2023 Safari12/12/20251060
api.Element.ariaColIndexText 📋Firefox10/24/2023 Safari12/12/2025780
api.Element.ariaRowIndexText 📋Firefox10/24/2023 Safari12/12/2025780
api.Element.beforematch_event 📋Edge5/31/2022 Safari12/12/20251291
api.Element.scrollend_event 📋Firefox1/17/2023 Safari12/12/20251060
api.EventCounts 📋Edge8/27/2020 Safari12/12/20251933
api.EventCounts.@@iterator Edge8/27/2020 Safari12/12/20251933
api.EventCounts.entries Edge8/27/2020 Safari12/12/20251933
api.EventCounts.forEach Edge8/27/2020 Safari12/12/20251933
api.EventCounts.get Edge8/27/2020 Safari12/12/20251933
api.EventCounts.has Edge8/27/2020 Safari12/12/20251933
api.EventCounts.keys Edge8/27/2020 Safari12/12/20251933
api.EventCounts.size Edge8/27/2020 Safari12/12/20251933
api.EventCounts.values Edge8/27/2020 Safari12/12/20251933
api.HTMLButtonElement.command 📋Edge4/4/2025 Safari12/12/2025252
api.HTMLButtonElement.command.request-close 📋Edge8/7/2025 Safari12/12/2025127
api.HTMLButtonElement.commandForElement 📋Edge4/4/2025 Safari12/12/2025252
api.HTMLElement.command_event 📋Edge4/4/2025 Safari12/12/2025252
api.LargestContentfulPaint 📋Edge1/15/2020 Safari12/12/20252158
api.LargestContentfulPaint.element 📋Edge1/15/2020 Safari12/12/20252158
api.LargestContentfulPaint.id 📋Edge1/15/2020 Safari12/12/20252158
api.LargestContentfulPaint.loadTime 📋Edge1/15/2020 Safari12/12/20252158
api.LargestContentfulPaint.renderTime 📋Edge1/15/2020 Safari12/12/20252158
api.LargestContentfulPaint.renderTime.cross-origin Edge2/6/2025 Safari12/12/2025309
api.LargestContentfulPaint.size 📋Edge1/15/2020 Safari12/12/20252158
api.LargestContentfulPaint.toJSON 📋Edge1/15/2020 Safari12/12/20252158
api.LargestContentfulPaint.url 📋Edge1/15/2020 Safari12/12/20252158
api.Performance.eventCounts 📋Edge8/27/2020 Safari12/12/20251933
api.PerformanceEventTiming 📋Edge1/15/2020 Safari12/12/20252158
api.PerformanceEventTiming.cancelable 📋Edge1/15/2020 Safari12/12/20252158
api.PerformanceEventTiming.interactionId 📋Edge11/19/2021 Safari12/12/20251484
api.PerformanceEventTiming.processingEnd 📋Edge1/15/2020 Safari12/12/20252158
api.PerformanceEventTiming.processingStart 📋Edge1/15/2020 Safari12/12/20252158
api.PerformanceEventTiming.target 📋Edge8/27/2020 Safari12/12/20251933
api.PerformanceEventTiming.toJSON 📋Edge1/15/2020 Safari12/12/20252158
api.Permissions.permission_storage-access 📋Edge8/27/2020 Safari12/12/20251933
api.PointerEvent.pointerType.fractional_coordinates Edge1/15/2020 Safari12/12/20252158
Chrome: movementX and movementY are not fractional, see bug 41364801.Chrome Android: movementX and movementY are not fractional, see bug 41364801.Edge: movementX and movementY are not fractional, see bug 41364801.Edge: Only clientX, clientY, pageX and pageY are fractional.Internet Explorer: Only clientX, clientY, pageX and pageY are fractional.Quest Browser: movementX and movementY are not fractional, see bug 41364801.Opera: movementX and movementY are not fractional, see bug 41364801.Opera Android: movementX and movementY are not fractional, see bug 41364801.Samsung Internet: movementX and movementY are not fractional, see bug 41364801.WebView Android: movementX and movementY are not fractional, see bug 41364801.
api.SVGAnimationElement.beginEvent_event 📋Edge1/15/2020 Safari12/12/20252158
Chrome: The onbegin event handler property is not supported.Chrome Android: The onbegin event handler property is not supported.Firefox: The onbegin event handler property is not supported.Firefox for Android: The onbegin event handler property is not supported.Opera: The onbegin event handler property is not supported.Opera Android: The onbegin event handler property is not supported.Safari: The onbegin event handler property is not supported.Safari on iOS: The onbegin event handler property is not supported.Samsung Internet: The onbegin event handler property is not supported.WebView Android: The onbegin event handler property is not supported.WebView on iOS: The onbegin event handler property is not supported.
api.SVGAnimationElement.repeatEvent_event 📋Edge1/15/2020 Safari12/12/20252158
Chrome: The onrepeat event handler property is not supported.Chrome Android: The onrepeat event handler property is not supported.Firefox: The onrepeat event handler property is not supported.Firefox for Android: The onrepeat event handler property is not supported.Opera: The onrepeat event handler property is not supported.Opera Android: The onrepeat event handler property is not supported.Safari: The onrepeat event handler property is not supported.Safari on iOS: The onrepeat event handler property is not supported.Samsung Internet: The onrepeat event handler property is not supported.WebView Android: The onrepeat event handler property is not supported.WebView on iOS: The onrepeat event handler property is not supported.
api.SVGScriptElement.async Firefox8/29/2023 Safari12/12/2025836
api.CSSScopeRule 📋Edge10/13/2023 Firefox12/9/2025788
api.CSSScopeRule.end 📋Edge10/13/2023 Firefox12/9/2025788
api.CSSScopeRule.start 📋Edge10/13/2023 Firefox12/9/2025788
javascript.builtins.FinalizationRegistry.register.symbol_as_target Edge1/12/2023 Firefox12/9/20251062
javascript.builtins.WeakMap.symbol_as_keys Edge1/12/2023 Firefox12/9/20251062
javascript.builtins.WeakRef.WeakRef.symbol_as_target Edge1/12/2023 Firefox12/9/20251062
javascript.builtins.WeakSet.symbol_as_keys Edge1/12/2023 Firefox12/9/20251062
api.Window.gamepadconnected_event 📋Firefox6/1/2021 Edge12/5/20251648
Chrome: The ongamepadconnected event handler property is not supported. See bug 40175074.Chrome Android: The ongamepadconnected event handler property is not supported. See bug 40175074.Edge: The ongamepadconnected event handler property is not supported. See bug 40175074.Firefox: The ongamepadconnected event handler property is not supported. See bug 1697093.Firefox for Android: The ongamepadconnected event handler property is not supported. See bug 1697093.Quest Browser: The ongamepadconnected event handler property is not supported. See bug 40175074.Opera: The ongamepadconnected event handler property is not supported. See bug 40175074.Opera Android: The ongamepadconnected event handler property is not supported. See bug 40175074.Safari: The ongamepadconnected event handler property is not supported. See bug 223860.Safari on iOS: The ongamepadconnected event handler property is not supported. See bug 223860.Samsung Internet: The ongamepadconnected event handler property is not supported. See bug 40175074.WebView Android: The ongamepadconnected event handler property is not supported. See bug 40175074.WebView on iOS: The ongamepadconnected event handler property is not supported. See bug 223860.
api.Window.gamepaddisconnected_event 📋Firefox6/1/2021 Edge12/5/20251648
Chrome: The ongamepaddisconnected event handler property is not supported. See bug 40175074.Chrome Android: The ongamepaddisconnected event handler property is not supported. See bug 40175074.Edge: The ongamepaddisconnected event handler property is not supported. See bug 40175074.Firefox: The ongamepaddisconnected event handler property is not supported. See bug 1697093.Firefox for Android: The ongamepaddisconnected event handler property is not supported. See bug 1697093.Quest Browser: The ongamepaddisconnected event handler property is not supported. See bug 40175074.Opera: The ongamepaddisconnected event handler property is not supported. See bug 40175074.Opera Android: The ongamepaddisconnected event handler property is not supported. See bug 40175074.Safari: The ongamepaddisconnected event handler property is not supported. See bug 223860.Safari on iOS: The ongamepaddisconnected event handler property is not supported. See bug 223860.Samsung Internet: The ongamepaddisconnected event handler property is not supported. See bug 40175074.WebView Android: The ongamepaddisconnected event handler property is not supported. See bug 40175074.WebView on iOS: The ongamepaddisconnected event handler property is not supported. See bug 223860.

2025/11

API First Browser Date Last Browser Date Days Notes
api.RTCEncodedAudioFrame.RTCEncodedAudioFrame 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedAudioFrame.RTCEncodedAudioFrame.options_metadata_contributingSources_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedAudioFrame.RTCEncodedAudioFrame.options_metadata_payloadType_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedAudioFrame.RTCEncodedAudioFrame.options_metadata_rtpTimestamp_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedAudioFrame.RTCEncodedAudioFrame.options_metadata_sequenceNumber_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedAudioFrame.RTCEncodedAudioFrame.options_metadata_synchronizationSource_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedAudioFrame.getMetadata.return_object_property_contributingSources 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedAudioFrame.getMetadata.return_object_property_payloadType 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedAudioFrame.getMetadata.return_object_property_rtpTimestamp 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedAudioFrame.getMetadata.return_object_property_sequenceNumber 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedAudioFrame.getMetadata.return_object_property_synchronizationSource 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_contributingSources_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_dependencies_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_frameId_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_height_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_payloadType_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_spatialIndex_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_synchronizationSource_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_temporalIndex_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_width_parameter 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.getMetadata.return_object_property_contributingSources 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.getMetadata.return_object_property_dependencies 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.getMetadata.return_object_property_frameId 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.getMetadata.return_object_property_height 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.getMetadata.return_object_property_payloadType 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.getMetadata.return_object_property_spatialIndex 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.getMetadata.return_object_property_synchronizationSource 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.getMetadata.return_object_property_temporalIndex 📋Edge7/25/2024 Firefox11/11/2025474
api.RTCEncodedVideoFrame.getMetadata.return_object_property_width 📋Edge7/25/2024 Firefox11/11/2025474
javascript.builtins.Atomics.waitAsync 📋Edge4/15/2021 Firefox11/11/20251671
Chrome: The Atomics.waitAsync() method never times out. See bug 40742782.Chrome Android: The Atomics.waitAsync() method never times out. See bug 40742782.Edge: The Atomics.waitAsync() method never times out. See bug 40742782.Quest Browser: The Atomics.waitAsync() method never times out. See bug 40742782.Opera Android: The Atomics.waitAsync() method never times out. See bug 40742782.WebView Android: The Atomics.waitAsync() method never times out. See bug 40742782.

2025/10

API First Browser Date Last Browser Date Days Notes
api.Document.startViewTransition 📋Edge3/13/2023 Firefox10/14/2025946
api.GPUDevice.importExternalTexture 📋Edge5/5/2023 Firefox10/14/2025893
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supported on Windows only, in all contexts except for service workers.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.importExternalTexture.videoframe_source Edge8/21/2023 Firefox10/14/2025785
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.HTMLElement.showPopover.options_source_parameter 📋Edge5/29/2025 Firefox10/14/2025138
Chrome: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.Chrome Android: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.Edge: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.Firefox: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 1984004.Firefox for Android: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 1984004.Opera: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.Opera Android: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.Safari: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 286575.Safari on iOS: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 286575.Samsung Internet: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.WebView Android: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.WebView on iOS: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 286575.
api.HTMLElement.togglePopover.options_source_parameter 📋Edge5/29/2025 Firefox10/14/2025138
Chrome: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.Chrome Android: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.Edge: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.Firefox: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 1984004.Firefox for Android: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 1984004.Opera: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.Opera Android: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.Safari: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 286575.Safari on iOS: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 286575.Samsung Internet: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.WebView Android: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 383343310.WebView on iOS: When using this option, the focus order doesn't change, so the popover does not become the next focus element. See bug 286575.
api.RTCDataChannel.closing_event 📋Edge4/13/2020 Firefox10/14/20252010
api.RTCDataChannel.transferable 📋Safari9/20/2021 Firefox10/14/20251485
api.ViewTransition 📋Edge3/13/2023 Firefox10/14/2025946
api.ViewTransition.finished 📋Edge3/13/2023 Firefox10/14/2025946
api.ViewTransition.ready 📋Edge3/13/2023 Firefox10/14/2025946
api.ViewTransition.skipTransition 📋Edge3/13/2023 Firefox10/14/2025946
api.ViewTransition.updateCallbackDone 📋Edge3/13/2023 Firefox10/14/2025946
api.DedicatedWorkerGlobalScope.rtctransform_event 📋Safari3/14/2022 Edge10/3/20251299
api.RTCRtpReceiver.transform 📋Safari3/14/2022 Edge10/3/20251299
api.RTCRtpScriptTransform 📋Safari3/14/2022 Edge10/3/20251299
api.RTCRtpScriptTransform.RTCRtpScriptTransform 📋Safari3/14/2022 Edge10/3/20251299
api.RTCRtpScriptTransformer 📋Safari3/14/2022 Edge10/3/20251299
api.RTCRtpScriptTransformer.options 📋Safari3/14/2022 Edge10/3/20251299
api.RTCRtpScriptTransformer.readable 📋Safari3/14/2022 Edge10/3/20251299
api.RTCRtpScriptTransformer.sendKeyFrameRequest 📋Safari3/14/2022 Edge10/3/20251299
api.RTCRtpScriptTransformer.writable 📋Safari3/14/2022 Edge10/3/20251299
api.RTCRtpSender.transform 📋Safari3/14/2022 Edge10/3/20251299
api.RTCTransformEvent 📋Safari3/14/2022 Edge10/3/20251299
api.RTCTransformEvent.transformer 📋Safari3/14/2022 Edge10/3/20251299

2025/9

API First Browser Date Last Browser Date Days Notes
api.SpeechRecognition.abort 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.audioend_event 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.audiostart_event 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.continuous 📋Edge1/15/2020 Firefox9/16/20252071
Chrome Android: The property can be set, but has no effect.Quest Browser: The property can be set, but has no effect.Opera Android: The property can be set, but has no effect.Samsung Internet: The property can be set, but has no effect.WebView Android: The property can be set, but has no effect.
api.SpeechRecognition.end_event 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.error_event 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.interimResults 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.lang 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.maxAlternatives 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.nomatch_event 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.result_event 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.soundend_event 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.soundstart_event 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.speechend_event 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.speechstart_event 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.start 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.start_event 📋Edge1/15/2020 Firefox9/16/20252071
api.SpeechRecognition.stop 📋Edge1/15/2020 Firefox9/16/20252071
api.AudioData 📋Edge9/24/2021 Safari9/15/20251452
api.AudioData.AudioData 📋Edge9/24/2021 Safari9/15/20251452
api.AudioData.allocationSize 📋Edge9/24/2021 Safari9/15/20251452
api.AudioData.clone 📋Edge9/24/2021 Safari9/15/20251452
api.AudioData.close 📋Edge9/24/2021 Safari9/15/20251452
api.AudioData.copyTo 📋Edge9/24/2021 Safari9/15/20251452
api.AudioData.duration 📋Edge9/24/2021 Safari9/15/20251452
api.AudioData.format 📋Edge9/24/2021 Safari9/15/20251452
api.AudioData.numberOfChannels 📋Edge9/24/2021 Safari9/15/20251452
api.AudioData.numberOfFrames 📋Edge9/24/2021 Safari9/15/20251452
api.AudioData.sampleRate 📋Edge9/24/2021 Safari9/15/20251452
api.AudioData.timestamp 📋Edge9/24/2021 Safari9/15/20251452
api.AudioDecoder 📋Edge9/24/2021 Safari9/15/20251452
api.AudioDecoder.AudioDecoder 📋Edge9/24/2021 Safari9/15/20251452
api.AudioDecoder.close 📋Edge9/24/2021 Safari9/15/20251452
api.AudioDecoder.configure 📋Edge9/24/2021 Safari9/15/20251452
api.AudioDecoder.decode 📋Edge9/24/2021 Safari9/15/20251452
api.AudioDecoder.decodeQueueSize 📋Edge9/24/2021 Safari9/15/20251452
api.AudioDecoder.dequeue_event 📋Edge10/3/2022 Safari9/15/20251078
api.AudioDecoder.flush 📋Edge9/24/2021 Safari9/15/20251452
api.AudioDecoder.isConfigSupported_static 📋Edge9/24/2021 Safari9/15/20251452
api.AudioDecoder.reset 📋Edge9/24/2021 Safari9/15/20251452
api.AudioDecoder.state 📋Edge9/24/2021 Safari9/15/20251452
api.AudioEncoder 📋Edge9/24/2021 Safari9/15/20251452
api.AudioEncoder.AudioEncoder 📋Edge9/24/2021 Safari9/15/20251452
api.AudioEncoder.close 📋Edge9/24/2021 Safari9/15/20251452
api.AudioEncoder.configure 📋Edge9/24/2021 Safari9/15/20251452
api.AudioEncoder.configure.bitrateMode 📋Edge11/2/2023 Safari9/15/2025683
api.AudioEncoder.configure.opus 📋Edge2/9/2023 Safari9/15/2025949
api.AudioEncoder.dequeue_event 📋Edge10/3/2022 Safari9/15/20251078
api.AudioEncoder.encode 📋Edge9/24/2021 Safari9/15/20251452
api.AudioEncoder.encodeQueueSize 📋Edge9/24/2021 Safari9/15/20251452
api.AudioEncoder.flush 📋Edge9/24/2021 Safari9/15/20251452
api.AudioEncoder.isConfigSupported_static 📋Edge9/24/2021 Safari9/15/20251452
api.AudioEncoder.reset 📋Edge9/24/2021 Safari9/15/20251452
api.AudioEncoder.state 📋Edge9/24/2021 Safari9/15/20251452
api.Document.parseHTMLUnsafe_static 📋Edge4/18/2024 Safari9/15/2025515
Firefox: Throws error NS_ERROR_UNEXPECTED (bug 1887817.)Firefox for Android: Throws error NS_ERROR_UNEXPECTED (bug 1887817.)Safari: If there are custom elements in a declarative shadow root in the parsed HTML, then the elements' constructors and connectedCallback() methods are not called (bug 296420).Safari on iOS: If there are custom elements in a declarative shadow root in the parsed HTML, then the elements' constructors and connectedCallback() methods are not called (bug 296420).WebView on iOS: If there are custom elements in a declarative shadow root in the parsed HTML, then the elements' constructors and connectedCallback() methods are not called (bug 296420).
api.Element.getHTML.escapes_lt_gt_in_attributes Firefox6/24/2025 Safari9/15/202583
api.Element.innerHTML.escapes_lt_gt_in_attributes Firefox6/24/2025 Safari9/15/202583
api.Element.outerHTML.escapes_lt_gt_in_attributes Firefox6/24/2025 Safari9/15/202583
api.Element.setHTMLUnsafe 📋Firefox2/20/2024 Safari9/15/2025573
Safari: If there are custom elements in a declarative shadow root in the parsed HTML, then the elements' constructors and connectedCallback() methods are not called (bug 296420).Safari on iOS: If there are custom elements in a declarative shadow root in the parsed HTML, then the elements' constructors and connectedCallback() methods are not called (bug 296420).WebView on iOS: If there are custom elements in a declarative shadow root in the parsed HTML, then the elements' constructors and connectedCallback() methods are not called (bug 296420).
api.EncodedAudioChunk 📋Edge9/24/2021 Safari9/15/20251452
api.EncodedAudioChunk.EncodedAudioChunk 📋Edge9/24/2021 Safari9/15/20251452
api.EncodedAudioChunk.byteLength 📋Edge9/24/2021 Safari9/15/20251452
api.EncodedAudioChunk.copyTo 📋Edge9/24/2021 Safari9/15/20251452
api.EncodedAudioChunk.duration 📋Edge9/24/2021 Safari9/15/20251452
api.EncodedAudioChunk.timestamp 📋Edge9/24/2021 Safari9/15/20251452
api.EncodedAudioChunk.type 📋Edge9/24/2021 Safari9/15/20251452
api.FileSystemFileHandle.createWritable 📋Edge10/9/2020 Safari9/15/20251802
api.FileSystemWritableFileStream 📋Edge10/9/2020 Safari9/15/20251802
api.FileSystemWritableFileStream.seek 📋Edge10/9/2020 Safari9/15/20251802
api.FileSystemWritableFileStream.truncate 📋Edge10/9/2020 Safari9/15/20251802
api.FileSystemWritableFileStream.write 📋Edge10/9/2020 Safari9/15/20251802
api.GPU 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPU.getPreferredCanvasFormat 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPU.requestAdapter 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPU.wgslLanguageFeatures 📋Edge7/21/2023 Safari9/15/2025787
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUAdapter 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUAdapter.features 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUAdapter.info 📋Edge7/25/2024 Safari9/15/2025417
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Chrome Android: Supported on ChromeOS, macOS, and Windows.Chrome Android: Supported on Linux (Intel Gen12+ GPUs only) since Chrome Android 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.Opera Android: Supported on ChromeOS, macOS, and Windows.Opera Android: Supported on Linux (Intel Gen12+ GPUs only) since Opera Android 95.Samsung Internet: Supported on ChromeOS, macOS, and Windows.Samsung Internet: Supported on Linux (Intel Gen12+ GPUs only) since Samsung Internet false.WebView Android: Supported on ChromeOS, macOS, and Windows.WebView Android: Supported on Linux (Intel Gen12+ GPUs only) since WebView Android 144.
api.GPUAdapter.limits 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUAdapter.requestDevice 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUAdapterInfo 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUAdapterInfo.architecture 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUAdapterInfo.description 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUAdapterInfo.device 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUAdapterInfo.isFallbackAdapter 📋Edge5/1/2025 Safari9/15/2025137
Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.
api.GPUAdapterInfo.vendor 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUBindGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUBindGroup.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUBindGroupLayout 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUBindGroupLayout.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUBuffer 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUBuffer.destroy 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUBuffer.getMappedRange 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUBuffer.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUBuffer.mapAsync 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUBuffer.mapState 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUBuffer.size 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUBuffer.unmap 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUBuffer.usage 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCanvasContext 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCanvasContext.canvas 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCanvasContext.configure 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Chrome: The rgba8unorm format is currently not supported on macOS. See bug 40823053.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Edge: The rgba8unorm format is currently not supported on macOS. See bug 40823053.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.Opera: The rgba8unorm format is currently not supported on macOS. See bug 40823053.
api.GPUCanvasContext.getConfiguration 📋Edge11/14/2024 Safari9/15/2025305
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Chrome Android: Supported on ChromeOS, macOS, and Windows.Chrome Android: Supported on Linux (Intel Gen12+ GPUs only) since Chrome Android 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.Opera Android: Supported on ChromeOS, macOS, and Windows.Opera Android: Supported on Linux (Intel Gen12+ GPUs only) since Opera Android 95.Samsung Internet: Supported on ChromeOS, macOS, and Windows.Samsung Internet: Supported on Linux (Intel Gen12+ GPUs only) since Samsung Internet false.WebView Android: Supported on ChromeOS, macOS, and Windows.WebView Android: Supported on Linux (Intel Gen12+ GPUs only) since WebView Android 144.
api.GPUCanvasContext.getCurrentTexture 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCanvasContext.unconfigure 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandBuffer 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandBuffer.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder.beginComputePass 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder.beginRenderPass 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder.clearBuffer 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder.copyBufferToBuffer 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder.copyBufferToTexture 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder.copyTextureToBuffer 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder.copyTextureToTexture 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder.finish 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder.insertDebugMarker 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder.popDebugGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder.pushDebugGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCommandEncoder.resolveQuerySet 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCompilationInfo 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCompilationInfo.messages 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCompilationMessage 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCompilationMessage.length 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCompilationMessage.lineNum 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCompilationMessage.linePos 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCompilationMessage.message 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCompilationMessage.offset 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUCompilationMessage.type 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUComputePassEncoder 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUComputePassEncoder.dispatchWorkgroups 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUComputePassEncoder.dispatchWorkgroupsIndirect 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUComputePassEncoder.end 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUComputePassEncoder.insertDebugMarker 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUComputePassEncoder.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUComputePassEncoder.popDebugGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUComputePassEncoder.pushDebugGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUComputePassEncoder.setBindGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUComputePassEncoder.setPipeline 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUComputePipeline 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUComputePipeline.getBindGroupLayout 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUComputePipeline.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.createBindGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.createBindGroupLayout 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.createBuffer 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Chrome: Before version 138, this method does not throw a RangeError exception when mappedAtCreation is true but size is not a multiple of 4; it generates a validation error instead.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Edge: Before version 138, this method does not throw a RangeError exception when mappedAtCreation is true but size is not a multiple of 4; it generates a validation error instead.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.Opera: Before version 122, this method does not throw a RangeError exception when mappedAtCreation is true but size is not a multiple of 4; it generates a validation error instead.
api.GPUDevice.createCommandEncoder 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.createComputePipeline 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.createComputePipelineAsync 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.createPipelineLayout 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.createQuerySet 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.createRenderBundleEncoder 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.createRenderPipeline 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.createRenderPipelineAsync 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.createSampler 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.createShaderModule 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.createTexture 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.destroy 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.features 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.limits 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.lost 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.popErrorScope 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.pushErrorScope 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDevice.queue 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDeviceLostInfo 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDeviceLostInfo.message 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUDeviceLostInfo.reason 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUExternalTexture 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUExternalTexture.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUInternalError 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUInternalError.GPUInternalError 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUOutOfMemoryError 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUOutOfMemoryError.GPUOutOfMemoryError 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUPipelineError 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUPipelineError.GPUPipelineError 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUPipelineError.GPUPipelineError.message_optional Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supported on Windows only, in all contexts except for service workers.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUPipelineError.reason 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUPipelineLayout 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUPipelineLayout.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUQuerySet 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUQuerySet.count 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUQuerySet.destroy 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUQuerySet.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUQuerySet.type 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUQueue 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUQueue.copyExternalImageToTexture 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUQueue.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUQueue.onSubmittedWorkDone 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUQueue.submit 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUQueue.writeBuffer 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUQueue.writeTexture 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundle 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundle.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder.draw 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder.drawIndexed 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder.drawIndexedIndirect 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder.drawIndirect 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder.finish 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder.insertDebugMarker 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder.popDebugGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder.pushDebugGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder.setBindGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder.setIndexBuffer 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder.setPipeline 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderBundleEncoder.setVertexBuffer 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.beginOcclusionQuery 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.draw 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.drawIndexed 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.drawIndexedIndirect 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.drawIndirect 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.end 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.endOcclusionQuery 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.executeBundles 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.insertDebugMarker 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.popDebugGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.pushDebugGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.setBindGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.setBlendConstant 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.setIndexBuffer 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.setPipeline 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.setScissorRect 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.setStencilReference 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.setVertexBuffer 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPassEncoder.setViewport 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPipeline 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPipeline.getBindGroupLayout 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPURenderPipeline.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSampler 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSampler.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUShaderModule 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUShaderModule.getCompilationInfo 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUShaderModule.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedFeatures 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedFeatures.@@iterator 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedFeatures.entries 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedFeatures.feature_texture-compression-astc-sliced-3d 📋Firefox7/22/2025 Safari9/15/202555
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Chrome Android: Supported on ChromeOS, macOS, and Windows.Chrome Android: Supported on Linux (Intel Gen12+ GPUs only) since Chrome Android 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.Opera Android: Supported on ChromeOS, macOS, and Windows.Opera Android: Supported on Linux (Intel Gen12+ GPUs only) since Opera Android 95.WebView Android: Supported on ChromeOS, macOS, and Windows.WebView Android: Supported on Linux (Intel Gen12+ GPUs only) since WebView Android 144.
api.GPUSupportedFeatures.feature_texture-compression-bc-sliced-3d 📋Firefox7/22/2025 Safari9/15/202555
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Chrome Android: Supported on ChromeOS, macOS, and Windows.Chrome Android: Supported on Linux (Intel Gen12+ GPUs only) since Chrome Android 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.Opera Android: Supported on ChromeOS, macOS, and Windows.Opera Android: Supported on Linux (Intel Gen12+ GPUs only) since Opera Android 95.WebView Android: Supported on ChromeOS, macOS, and Windows.WebView Android: Supported on Linux (Intel Gen12+ GPUs only) since WebView Android 144.
api.GPUSupportedFeatures.forEach 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedFeatures.has 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedFeatures.keys 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedFeatures.size 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedFeatures.values 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxBindGroups 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxBindGroupsPlusVertexBuffers 📋Edge12/7/2023 Safari9/15/2025648
Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.
api.GPUSupportedLimits.maxBindingsPerBindGroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxBufferSize 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxColorAttachmentBytesPerSample 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxColorAttachments 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxComputeInvocationsPerWorkgroup 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxComputeWorkgroupSizeX 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxComputeWorkgroupSizeY 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxComputeWorkgroupSizeZ 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxComputeWorkgroupStorageSize 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxComputeWorkgroupsPerDimension 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxDynamicStorageBuffersPerPipelineLayout 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxDynamicUniformBuffersPerPipelineLayout 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxInterStageShaderVariables 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxSampledTexturesPerShaderStage 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxSamplersPerShaderStage 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxStorageBufferBindingSize 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxStorageBuffersPerShaderStage 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxStorageTexturesPerShaderStage 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxTextureArrayLayers 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxTextureDimension1D 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxTextureDimension2D 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxTextureDimension3D 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxUniformBufferBindingSize 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxUniformBuffersPerShaderStage 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxVertexAttributes 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxVertexBufferArrayStride 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.maxVertexBuffers 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.minStorageBufferOffsetAlignment 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUSupportedLimits.minUniformBufferOffsetAlignment 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTexture 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTexture.createView 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTexture.depthOrArrayLayers 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTexture.destroy 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTexture.dimension 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTexture.format 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTexture.height 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTexture.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTexture.mipLevelCount 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTexture.sampleCount 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTexture.usage 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTexture.width 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTextureView 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUTextureView.label 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUUncapturedErrorEvent 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUUncapturedErrorEvent.GPUUncapturedErrorEvent 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUUncapturedErrorEvent.error 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUValidationError 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.GPUValidationError.GPUValidationError 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.HTMLCanvasElement.getContext.webgpu_context 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supported on Windows only, in all contexts except for service workers.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.HTMLElement.beforetoggle_event.dialog_elements 📋Firefox11/26/2024 Safari9/15/2025293
api.HTMLElement.toggle_event.dialog_elements 📋Firefox11/26/2024 Safari9/15/2025293
api.IntersectionObserver.scrollMargin Edge12/7/2023 Safari9/15/2025648
api.Navigator.gpu 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supported on Windows only.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.OffscreenCanvas.getContext.webgpu_context 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supported on Windows only, in all contexts except for service workers.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.ShadowRoot.getHTML.escapes_lt_gt_in_attributes Firefox6/24/2025 Safari9/15/202583
api.ShadowRoot.innerHTML.escapes_lt_gt_in_attributes Firefox6/24/2025 Safari9/15/202583
api.ShadowRoot.setHTMLUnsafe 📋Firefox2/20/2024 Safari9/15/2025573
Safari: If there are custom elements in a declarative shadow root in the parsed HTML, then the elements' constructors and connectedCallback() methods are not called (bug 296420).Safari on iOS: If there are custom elements in a declarative shadow root in the parsed HTML, then the elements' constructors and connectedCallback() methods are not called (bug 296420).WebView on iOS: If there are custom elements in a declarative shadow root in the parsed HTML, then the elements' constructors and connectedCallback() methods are not called (bug 296420).
api.URLPattern 📋Edge10/21/2021 Safari9/15/20251425
api.URLPattern.URLPattern 📋Edge10/21/2021 Safari9/15/20251425
api.URLPattern.URLPattern.ignoreCase_option 📋Edge10/27/2022 Safari9/15/20251054
api.URLPattern.exec 📋Edge10/21/2021 Safari9/15/20251425
api.URLPattern.hasRegExpGroups 📋Edge2/23/2024 Safari9/15/2025570
api.URLPattern.hash 📋Edge10/21/2021 Safari9/15/20251425
api.URLPattern.hostname 📋Edge10/21/2021 Safari9/15/20251425
api.URLPattern.password 📋Edge10/21/2021 Safari9/15/20251425
api.URLPattern.pathname 📋Edge10/21/2021 Safari9/15/20251425
api.URLPattern.port 📋Edge10/21/2021 Safari9/15/20251425
api.URLPattern.protocol 📋Edge10/21/2021 Safari9/15/20251425
api.URLPattern.search 📋Edge10/21/2021 Safari9/15/20251425
api.URLPattern.test 📋Edge10/21/2021 Safari9/15/20251425
api.URLPattern.username 📋Edge10/21/2021 Safari9/15/20251425
api.WGSLLanguageFeatures 📋Edge7/21/2023 Safari9/15/2025787
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Firefox for Android: Supports all contexts except service workers. See bug 1942431.Firefox for Android: Supports Windows since Firefox for Android 141. See bug 1972486.Firefox for Android: Supports macOS Tahoe on Apple silicon since Firefox for Android 145. See bug 1992212.Firefox for Android: Supports older macOS versions on Apple silicon since Firefox for Android 147. See bug 1993341.Firefox for Android: Does not support macOS on Intel CPUs. See bug 2004105.Firefox for Android: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.WGSLLanguageFeatures.@@iterator 📋Edge7/21/2023 Safari9/15/2025787
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Firefox for Android: Supports all contexts except service workers. See bug 1942431.Firefox for Android: Supports Windows since Firefox for Android 141. See bug 1972486.Firefox for Android: Supports macOS Tahoe on Apple silicon since Firefox for Android 145. See bug 1992212.Firefox for Android: Supports older macOS versions on Apple silicon since Firefox for Android 147. See bug 1993341.Firefox for Android: Does not support macOS on Intel CPUs. See bug 2004105.Firefox for Android: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.WGSLLanguageFeatures.entries 📋Edge7/21/2023 Safari9/15/2025787
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Firefox for Android: Supports all contexts except service workers. See bug 1942431.Firefox for Android: Supports Windows since Firefox for Android 141. See bug 1972486.Firefox for Android: Supports macOS Tahoe on Apple silicon since Firefox for Android 145. See bug 1992212.Firefox for Android: Supports older macOS versions on Apple silicon since Firefox for Android 147. See bug 1993341.Firefox for Android: Does not support macOS on Intel CPUs. See bug 2004105.Firefox for Android: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.WGSLLanguageFeatures.forEach 📋Edge7/21/2023 Safari9/15/2025787
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Firefox for Android: Supports all contexts except service workers. See bug 1942431.Firefox for Android: Supports Windows since Firefox for Android 141. See bug 1972486.Firefox for Android: Supports macOS Tahoe on Apple silicon since Firefox for Android 145. See bug 1992212.Firefox for Android: Supports older macOS versions on Apple silicon since Firefox for Android 147. See bug 1993341.Firefox for Android: Does not support macOS on Intel CPUs. See bug 2004105.Firefox for Android: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.WGSLLanguageFeatures.has 📋Edge7/21/2023 Safari9/15/2025787
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Firefox for Android: Supports all contexts except service workers. See bug 1942431.Firefox for Android: Supports Windows since Firefox for Android 141. See bug 1972486.Firefox for Android: Supports macOS Tahoe on Apple silicon since Firefox for Android 145. See bug 1992212.Firefox for Android: Supports older macOS versions on Apple silicon since Firefox for Android 147. See bug 1993341.Firefox for Android: Does not support macOS on Intel CPUs. See bug 2004105.Firefox for Android: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.WGSLLanguageFeatures.keys 📋Edge7/21/2023 Safari9/15/2025787
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Firefox for Android: Supports all contexts except service workers. See bug 1942431.Firefox for Android: Supports Windows since Firefox for Android 141. See bug 1972486.Firefox for Android: Supports macOS Tahoe on Apple silicon since Firefox for Android 145. See bug 1992212.Firefox for Android: Supports older macOS versions on Apple silicon since Firefox for Android 147. See bug 1993341.Firefox for Android: Does not support macOS on Intel CPUs. See bug 2004105.Firefox for Android: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.WGSLLanguageFeatures.size 📋Edge7/21/2023 Safari9/15/2025787
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Firefox for Android: Supports all contexts except service workers. See bug 1942431.Firefox for Android: Supports Windows since Firefox for Android 141. See bug 1972486.Firefox for Android: Supports macOS Tahoe on Apple silicon since Firefox for Android 145. See bug 1992212.Firefox for Android: Supports older macOS versions on Apple silicon since Firefox for Android 147. See bug 1993341.Firefox for Android: Does not support macOS on Intel CPUs. See bug 2004105.Firefox for Android: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.WGSLLanguageFeatures.values 📋Edge7/21/2023 Safari9/15/2025787
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Firefox for Android: Supports all contexts except service workers. See bug 1942431.Firefox for Android: Supports Windows since Firefox for Android 141. See bug 1972486.Firefox for Android: Supports macOS Tahoe on Apple silicon since Firefox for Android 145. See bug 1992212.Firefox for Android: Supports older macOS versions on Apple silicon since Firefox for Android 147. See bug 1993341.Firefox for Android: Does not support macOS on Intel CPUs. See bug 2004105.Firefox for Android: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
api.WorkerNavigator.gpu 📋Edge5/5/2023 Safari9/15/2025864
Chrome: Supported on ChromeOS, macOS, and Windows.Chrome: Supported on Linux (Intel Gen12+ GPUs only) since Chrome 144.Edge: Supported on ChromeOS, macOS, and Windows.Edge: Supported on Linux (Intel Gen12+ GPUs only) since Edge 144.Firefox: Supports all contexts except service workers. See bug 1942431.Firefox: Supports Windows since Firefox 141. See bug 1972486.Firefox: Supports macOS Tahoe on Apple silicon since Firefox 145. See bug 1992212.Firefox: Supports older macOS versions on Apple silicon since Firefox 147. See bug 1993341.Firefox: Does not support macOS on Intel CPUs. See bug 2004105.Firefox: Does not support Linux. See bug 2006676.Firefox for Android: Supports all contexts except service workers. See bug 1942431.Firefox for Android: Supports Windows since Firefox for Android 141. See bug 1972486.Firefox for Android: Supports macOS Tahoe on Apple silicon since Firefox for Android 145. See bug 1992212.Firefox for Android: Supports older macOS versions on Apple silicon since Firefox for Android 147. See bug 1993341.Firefox for Android: Does not support macOS on Intel CPUs. See bug 2004105.Firefox for Android: Does not support Linux. See bug 2006676.Opera: Supported on ChromeOS, macOS, and Windows.Opera: Supported on Linux (Intel Gen12+ GPUs only) since Opera false.
javascript.regular_expressions.modifier 📋Edge5/17/2024 Safari9/15/2025486
api.FontFace.featureSettings 📋Firefox9/22/2015 Edge9/5/20253636
Chrome: The property can be set, but has no effect. See bug 324519293Chrome Android: The property can be set, but has no effect. See bug 324519293Edge: The property can be set, but has no effect. See bug 324519293Quest Browser: The property can be set, but has no effect. See bug 324519293Opera: The property can be set, but has no effect. See bug 324519293Opera Android: The property can be set, but has no effect. See bug 324519293WebView Android: The property can be set, but has no effect. See bug 324519293
javascript.builtins.Uint8Array.fromBase64 📋Firefox11/26/2024 Edge9/5/2025283
javascript.builtins.Uint8Array.fromHex 📋Firefox11/26/2024 Edge9/5/2025283
javascript.builtins.Uint8Array.setFromBase64 📋Firefox11/26/2024 Edge9/5/2025283
javascript.builtins.Uint8Array.setFromHex 📋Firefox11/26/2024 Edge9/5/2025283
javascript.builtins.Uint8Array.toBase64 📋Firefox11/26/2024 Edge9/5/2025283
javascript.builtins.Uint8Array.toHex 📋Firefox11/26/2024 Edge9/5/2025283

2025/8

API First Browser Date Last Browser Date Days Notes
api.RTCStatsReport.type_candidate-pair.responsesReceived 📋Safari9/19/2017 Firefox8/19/20252891
api.RTCStatsReport.type_candidate-pair.totalRoundTripTime 📋Safari9/19/2017 Firefox8/19/20252891
api.Selection.getComposedRanges 📋Safari9/18/2023 Firefox8/19/2025701
api.SpeechRecognition 📋Safari4/26/2021 Firefox8/19/20251576
Chrome: You'll need to serve your code through a web server for recognition to work.Chrome Android: You'll need to serve your code through a web server for recognition to work.Edge: You'll need to serve your code through a web server for recognition to work.Quest Browser: You'll need to serve your code through a web server for recognition to work.Opera: You'll need to serve your code through a web server for recognition to work.Opera Android: You'll need to serve your code through a web server for recognition to work.Samsung Internet: You'll need to serve your code through a web server for recognition to work.WebView Android: You'll need to serve your code through a web server for recognition to work.
api.SpeechRecognition.SpeechRecognition 📋Safari4/26/2021 Firefox8/19/20251576

2025/7

API First Browser Date Last Browser Date Days Notes
api.MediaDevices.getSupportedConstraints.return_object_property_groupId 📋Firefox10/22/2019 Safari7/29/20252107
api.HTMLElement.togglePopover.force_parameter 📋Edge8/21/2023 Firefox7/22/2025701
api.HTMLElement.togglePopover.options_force_parameter 📋Edge10/17/2024 Firefox7/22/2025278

2025/6

API First Browser Date Last Browser Date Days Notes
api.CSS.highlights_static 📋Edge9/1/2022 Firefox6/24/20251027
api.CookieChangeEvent 📋Edge11/19/2020 Firefox6/24/20251678
api.CookieChangeEvent.CookieChangeEvent 📋Edge11/19/2020 Firefox6/24/20251678
api.CookieChangeEvent.changed 📋Edge11/19/2020 Firefox6/24/20251678
api.CookieChangeEvent.deleted 📋Edge11/19/2020 Firefox6/24/20251678
api.CookieStore 📋Edge11/19/2020 Firefox6/24/20251678
api.CookieStore.change_event 📋Edge11/19/2020 Firefox6/24/20251678
api.CookieStore.delete 📋Edge11/19/2020 Firefox6/24/20251678
api.CookieStore.get 📋Edge11/19/2020 Firefox6/24/20251678
api.CookieStore.get.name_return_property 📋Edge11/19/2020 Firefox6/24/20251678
api.CookieStore.get.value_return_property 📋Edge11/19/2020 Firefox6/24/20251678
api.CookieStore.getAll 📋Edge11/19/2020 Firefox6/24/20251678
api.CookieStore.set 📋Edge11/19/2020 Firefox6/24/20251678
api.ExtendableCookieChangeEvent 📋Edge11/19/2020 Firefox6/24/20251678
api.ExtendableCookieChangeEvent.ExtendableCookieChangeEvent 📋Edge11/19/2020 Firefox6/24/20251678
api.ExtendableCookieChangeEvent.changed 📋Edge11/19/2020 Firefox6/24/20251678
api.ExtendableCookieChangeEvent.deleted 📋Edge11/19/2020 Firefox6/24/20251678
api.Highlight 📋Edge9/1/2022 Firefox6/24/20251027
api.Highlight.@@iterator Edge9/1/2022 Firefox6/24/20251027
api.Highlight.Highlight 📋Edge9/1/2022 Firefox6/24/20251027
api.Highlight.add Edge9/1/2022 Firefox6/24/20251027
api.Highlight.clear Edge9/1/2022 Firefox6/24/20251027
api.Highlight.delete Edge9/1/2022 Firefox6/24/20251027
api.Highlight.entries Edge9/1/2022 Firefox6/24/20251027
api.Highlight.forEach Edge9/1/2022 Firefox6/24/20251027
api.Highlight.has Edge9/1/2022 Firefox6/24/20251027
api.Highlight.keys Edge9/1/2022 Firefox6/24/20251027
api.Highlight.priority 📋Edge9/1/2022 Firefox6/24/20251027
api.Highlight.size Edge9/1/2022 Firefox6/24/20251027
api.Highlight.type 📋Edge9/1/2022 Firefox6/24/20251027
api.Highlight.values Edge9/1/2022 Firefox6/24/20251027
api.HighlightRegistry 📋Edge9/1/2022 Firefox6/24/20251027
api.HighlightRegistry.@@iterator Edge9/1/2022 Firefox6/24/20251027
api.HighlightRegistry.clear Edge9/1/2022 Firefox6/24/20251027
api.HighlightRegistry.delete Edge9/1/2022 Firefox6/24/20251027
api.HighlightRegistry.entries Edge9/1/2022 Firefox6/24/20251027
api.HighlightRegistry.forEach Edge9/1/2022 Firefox6/24/20251027
api.HighlightRegistry.get Edge9/1/2022 Firefox6/24/20251027
api.HighlightRegistry.has Edge9/1/2022 Firefox6/24/20251027
api.HighlightRegistry.keys Edge9/1/2022 Firefox6/24/20251027
api.HighlightRegistry.set Edge9/1/2022 Firefox6/24/20251027
api.HighlightRegistry.size Edge9/1/2022 Firefox6/24/20251027
api.HighlightRegistry.values Edge9/1/2022 Firefox6/24/20251027
api.ServiceWorkerGlobalScope.cookieStore 📋Edge11/19/2020 Firefox6/24/20251678
api.Window.cookieStore 📋Edge11/19/2020 Firefox6/24/20251678

2025/5

API First Browser Date Last Browser Date Days Notes
api.Selection.direction 📋Safari9/18/2023 Edge5/29/2025619
api.SubtleCrypto.exportKey.ed25519 📋Safari9/18/2023 Edge5/29/2025619
api.SubtleCrypto.generateKey.ed25519 📋Safari9/18/2023 Edge5/29/2025619
api.SubtleCrypto.importKey.ed25519 📋Safari9/18/2023 Edge5/29/2025619
api.SubtleCrypto.sign.ed25519 📋Safari9/18/2023 Edge5/29/2025619
Safari: Generates randomized signatures as per draft-irtf-cfrg-det-sigs-with-noise, instead of deterministic signatures as per RFC 8032.Safari on iOS: Generates randomized signatures as per draft-irtf-cfrg-det-sigs-with-noise, instead of deterministic signatures as per RFC 8032.WebView on iOS: Generates randomized signatures as per draft-irtf-cfrg-det-sigs-with-noise, instead of deterministic signatures as per RFC 8032.
api.SubtleCrypto.verify.ed25519 📋Safari9/18/2023 Edge5/29/2025619
api.CredentialsContainer.create.publicKey_option.extensions.largeBlob 📋Edge5/5/2023 Firefox5/27/2025753
api.CredentialsContainer.create.publicKey_option.extensions.prf 📋Edge8/21/2023 Firefox5/27/2025645
Firefox: Not supported on macOS.
api.HTMLDialogElement.requestClose 📋Edge3/6/2025 Firefox5/27/202582
api.SVGAElement.rel 📋Firefox6/26/2018 Edge5/1/20252501
api.SVGAElement.relList 📋Firefox6/26/2018 Edge5/1/20252501
api.SVGGeometryElement.isPointInFill.point_parameter_DOMPoint Safari9/17/2018 Edge5/1/20252418
api.SVGGeometryElement.isPointInStroke.point_parameter_DOMPoint Safari9/17/2018 Edge5/1/20252418
javascript.builtins.RegExp.escape 📋Safari12/11/2024 Edge5/1/2025141

2025/4

API First Browser Date Last Browser Date Days Notes
api.RTCCertificate.getFingerprints 📋Safari3/25/2019 Firefox4/29/20252227
api.RTCRtpSender.getParameters.return_object_property_degradationPreference 📋Safari3/25/2019 Firefox4/29/20252227
api.RTCRtpSender.setParameters.parameters_degradationPreference_parameter 📋Safari3/25/2019 Firefox4/29/20252227
javascript.builtins.Error.captureStackTrace 📋Edge1/15/2020 Firefox4/29/20251931
javascript.builtins.Error.isError 📋Edge3/6/2025 Firefox4/29/202554
Node.js: Returns false for DOMException instances. See issue 56497.Safari: Returns false for DOMException instances.Safari on iOS: Returns false for DOMException instances.WebView on iOS: Returns false for DOMException instances.
javascript.grammar.trailing_commas.trailing_commas_in_dynamic_import 📋Edge5/27/2021 Firefox4/29/20251433
Node.js: The second parameter no longer throws a parser error, but the --experimental-json-modules flag is still needed to load JSON modules.
javascript.operators.import.options_parameter 📋Edge5/27/2021 Firefox4/29/20251433
Node.js: The second parameter no longer throws a parser error, but the --experimental-json-modules flag is still needed to load JSON modules.
javascript.statements.import.import_attributes 📋Safari12/11/2023 Firefox4/29/2025505
javascript.statements.import.import_attributes.type_json Safari12/11/2023 Firefox4/29/2025505
api.Element.ariaActiveDescendantElement 📋Safari3/27/2023 Edge4/4/2025739
api.Element.ariaControlsElements 📋Safari3/27/2023 Edge4/4/2025739
api.Element.ariaDescribedByElements 📋Safari3/27/2023 Edge4/4/2025739
api.Element.ariaDetailsElements 📋Safari3/27/2023 Edge4/4/2025739
api.Element.ariaErrorMessageElements 📋Safari3/27/2023 Edge4/4/2025739
api.Element.ariaFlowToElements 📋Safari3/27/2023 Edge4/4/2025739
api.Element.ariaLabelledByElements 📋Safari3/27/2023 Edge4/4/2025739
api.ElementInternals.ariaActiveDescendantElement 📋Safari3/27/2023 Edge4/4/2025739
api.ElementInternals.ariaControlsElements 📋Safari3/27/2023 Edge4/4/2025739
api.ElementInternals.ariaDescribedByElements 📋Safari3/27/2023 Edge4/4/2025739
api.ElementInternals.ariaDetailsElements 📋Safari3/27/2023 Edge4/4/2025739
api.ElementInternals.ariaErrorMessageElements 📋Safari3/27/2023 Edge4/4/2025739
api.ElementInternals.ariaFlowToElements 📋Safari3/27/2023 Edge4/4/2025739
api.ElementInternals.ariaLabelledByElements 📋Safari3/27/2023 Edge4/4/2025739
javascript.builtins.DataView.getFloat16 📋Firefox8/6/2024 Edge4/4/2025241
javascript.builtins.DataView.setFloat16 📋Firefox8/6/2024 Edge4/4/2025241
javascript.builtins.Float16Array 📋Firefox8/6/2024 Edge4/4/2025241
javascript.builtins.Float16Array.Float16Array 📋Firefox8/6/2024 Edge4/4/2025241
javascript.builtins.Math.f16round 📋Firefox8/6/2024 Edge4/4/2025241
javascript.builtins.Atomics.pause 📋Edge2/6/2025 Firefox4/1/202554

2025/3

API First Browser Date Last Browser Date Days Notes
api.AudioContext.outputLatency 📋Firefox10/22/2019 Safari3/31/20251987
api.CSPViolationReportBody 📋Edge1/15/2020 Safari3/31/20251902
api.CanvasRenderingContext2D.font 📋Firefox6/30/2009 Safari3/31/20255753
Safari: The font-weight can be set, but is not reflected back (see bug 284115).Safari on iOS: The font-weight can be set, but is not reflected back (see bug 284115).WebView on iOS: The font-weight can be set, but is not reflected back (see bug 284115).
api.CanvasRenderingContext2D.letterSpacing 📋Edge3/3/2022 Safari3/31/20251124
api.CanvasRenderingContext2D.wordSpacing 📋Edge3/3/2022 Safari3/31/20251124
api.ClipboardItem.supports_static 📋Edge1/25/2024 Safari3/31/2025431
api.Document.fragmentDirective 📋Edge10/9/2020 Safari3/31/20251634
api.FragmentDirective 📋Edge5/21/2020 Safari3/31/20251775
api.HTMLMediaElement.setSinkId 📋Edge4/30/2018 Safari3/31/20252527
Chrome Android: Not available due to a limitation in Android, see bug 41276355.Firefox for Android: Not available due to a limitation in Android, see bug 1473346.Quest Browser: Not available due to a limitation in Android, see bug 41276355.Opera Android: Not available due to a limitation in Android, see bug 41276355.Samsung Internet: Not available due to a limitation in Android, see bug 41276355.WebView Android: Not available due to a limitation in Android, see bug 41276355.
api.HTMLMediaElement.sinkId 📋Edge4/30/2018 Safari3/31/20252527
Chrome Android: Not available due to a limitation in Android, see bug 41276355.Firefox for Android: Not available due to a limitation in Android, see bug 1473346.Quest Browser: Not available due to a limitation in Android, see bug 41276355.Opera Android: Not available due to a limitation in Android, see bug 41276355.Samsung Internet: Not available due to a limitation in Android, see bug 41276355.WebView Android: Not available due to a limitation in Android, see bug 41276355.
api.ImageCapture 📋Firefox1/13/2015 Safari3/31/20253730
api.ImageCapture.ImageCapture 📋Firefox1/13/2015 Safari3/31/20253730
api.ImageCapture.takePhoto 📋Firefox1/13/2015 Safari3/31/20253730
Chrome: photoSettings parameter not supported.Chrome Android: photoSettings parameter not supported.Opera: photoSettings parameter not supported.Opera Android: photoSettings parameter not supported.Samsung Internet: photoSettings parameter not supported.WebView Android: photoSettings parameter not supported.
api.ImageCapture.track 📋Firefox1/13/2015 Safari3/31/20253730
api.OffscreenCanvasRenderingContext2D.font 📋Edge1/15/2020 Safari3/31/20251902
Safari: The font-weight can be set, but is not reflected back (see bug 284115).Safari on iOS: The font-weight can be set, but is not reflected back (see bug 284115).WebView on iOS: The font-weight can be set, but is not reflected back (see bug 284115).
api.OffscreenCanvasRenderingContext2D.letterSpacing 📋Edge3/3/2022 Safari3/31/20251124
api.OffscreenCanvasRenderingContext2D.wordSpacing 📋Edge3/3/2022 Safari3/31/20251124
api.PublicKeyCredential.parseCreationOptionsFromJSON_static 📋Firefox10/24/2023 Safari3/31/2025524
api.PublicKeyCredential.parseRequestOptionsFromJSON_static 📋Firefox10/24/2023 Safari3/31/2025524
api.PublicKeyCredential.toJSON 📋Firefox10/24/2023 Safari3/31/2025524
api.SVGImageElement.decode 📋Firefox7/9/2019 Safari3/31/20252092
javascript.builtins.Iterator.Iterator 📋Edge2/23/2024 Safari3/31/2025402
javascript.builtins.Iterator.drop 📋Edge2/23/2024 Safari3/31/2025402
javascript.builtins.Iterator.every 📋Edge2/23/2024 Safari3/31/2025402
javascript.builtins.Iterator.filter 📋Edge2/23/2024 Safari3/31/2025402
javascript.builtins.Iterator.find 📋Edge2/23/2024 Safari3/31/2025402
javascript.builtins.Iterator.flatMap 📋Edge2/23/2024 Safari3/31/2025402
javascript.builtins.Iterator.forEach 📋Edge2/23/2024 Safari3/31/2025402
javascript.builtins.Iterator.from 📋Edge2/23/2024 Safari3/31/2025402
javascript.builtins.Iterator.map 📋Edge2/23/2024 Safari3/31/2025402
javascript.builtins.Iterator.reduce 📋Edge2/23/2024 Safari3/31/2025402
javascript.builtins.Iterator.some 📋Edge2/23/2024 Safari3/31/2025402
javascript.builtins.Iterator.take 📋Edge2/23/2024 Safari3/31/2025402
javascript.builtins.Iterator.toArray 📋Edge2/23/2024 Safari3/31/2025402
javascript.builtins.JSON.parse.reviver_parameter_context_argument 📋Edge6/2/2023 Safari3/31/2025668
api.CSSFontFeatureValuesRule 📋Firefox12/1/2014 Edge3/6/20253748
Chrome: Not exposed on Window. See bug 385925149.Chrome Android: Not exposed on Window. See bug 385925149.Edge: Not exposed on Window. See bug 385925149.Opera: Not exposed on Window. See bug 385925149.Opera Android: Not exposed on Window. See bug 385925149.Samsung Internet: Not exposed on Window. See bug 385925149.WebView Android: Not exposed on Window. See bug 385925149.
api.HTMLElement.contentEditable.plaintext-only Safari7/20/2011 Firefox3/4/20254976
javascript.builtins.Intl.DurationFormat 📋Safari3/27/2023 Firefox3/4/2025708
javascript.builtins.Intl.DurationFormat.DurationFormat 📋Safari3/27/2023 Firefox3/4/2025708
javascript.builtins.Intl.DurationFormat.format 📋Safari3/27/2023 Firefox3/4/2025708
javascript.builtins.Intl.DurationFormat.formatToParts 📋Safari3/27/2023 Firefox3/4/2025708
javascript.builtins.Intl.DurationFormat.resolvedOptions 📋Safari3/27/2023 Firefox3/4/2025708
javascript.builtins.Intl.DurationFormat.supportedLocalesOf 📋Safari3/27/2023 Firefox3/4/2025708

2025/2

API First Browser Date Last Browser Date Days Notes
api.ClipboardItem.ClipboardItem 📋Safari3/24/2020 Edge2/6/20251780
Chrome: Only accepts a Blob or a Promise resolving to a Blob as the item data.Chrome: Only accepts a Blob as the item data. See bug 40103226.Chrome Android: The ClipboardItem constructor only accepts a blob as the item data, but not strings or Promises that resolve to strings or blobs. See bug 40103226.Edge: Only accepts a Blob or a Promise resolving to a Blob as the item data.Edge: Only accepts a Blob as the item data. See bug 40103226.Quest Browser: The ClipboardItem constructor only accepts a blob as the item data, but not strings or Promises that resolve to strings or blobs. See bug 40103226.Opera: Only accepts a Blob or a Promise resolving to a Blob as the item data.Opera: Only accepts a Blob as the item data. See bug 40103226.Opera Android: The ClipboardItem constructor only accepts a blob as the item data, but not strings or Promises that resolve to strings or blobs. See bug 40103226.Samsung Internet: The ClipboardItem constructor only accepts a blob as the item data, but not strings or Promises that resolve to strings or blobs. See bug 40103226.WebView Android: The ClipboardItem constructor only accepts a blob as the item data, but not strings or Promises that resolve to strings or blobs. See bug 40103226.
api.PublicKeyCredential.getClientCapabilities_static 📋Safari3/5/2024 Edge2/6/2025338
api.SubtleCrypto.deriveBits.x25519 📋Safari9/18/2023 Edge2/6/2025507
api.SubtleCrypto.deriveKey.x25519 📋Safari9/18/2023 Edge2/6/2025507
api.SubtleCrypto.exportKey.x25519 📋Safari9/18/2023 Edge2/6/2025507
api.SubtleCrypto.generateKey.x25519 📋Safari9/18/2023 Edge2/6/2025507
api.SubtleCrypto.importKey.x25519 📋Safari9/18/2023 Edge2/6/2025507
api.RTCStatsReport.type_inbound-rtp.mid 📋Edge9/1/2022 Firefox2/4/2025887

2025/1

API First Browser Date Last Browser Date Days Notes
api.PushMessageData.bytes 📋Firefox7/9/2024 Edge1/17/2025192
api.Request.bytes 📋Firefox7/9/2024 Edge1/17/2025192
api.Response.bytes 📋Firefox7/9/2024 Edge1/17/2025192
api.PushManager.supportedContentEncodings_static 📋Edge4/30/2018 Firefox1/7/20252444
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
javascript.builtins.Promise.try 📋Edge8/22/2024 Firefox1/7/2025138

2024/12

API First Browser Date Last Browser Date Days Notes
api.CSSNestedDeclarations 📋Edge10/17/2024 Safari12/11/202455
api.CSSNestedDeclarations.style 📋Edge10/17/2024 Safari12/11/202455
api.Element.auxclick_event 📋Firefox4/19/2017 Safari12/11/20242793
Firefox: Starting in Firefox 68, the auxclick event is used to trigger the new tab on middle-click action; previously, this had been done with the click event. Apps can prevent middle-click from opening new tabs (or middle-click to paste, if that feature is enabled) by intercepting auxclick on links, and auxclick event handlers can now open popups without triggering the popup blocker.
api.Element.auxclick_event.type_pointerevent Edge7/22/2021 Safari12/11/20241238
api.Element.click_event.type_pointerevent Edge7/22/2021 Safari12/11/20241238
api.Element.contextmenu_event.type_pointerevent Edge7/22/2021 Safari12/11/20241238
api.PointerEvent.PointerEvent.options_altitudeAngle_parameter Edge10/9/2020 Safari12/11/20241524
api.PointerEvent.PointerEvent.options_azimuthAngle_parameter Edge10/9/2020 Safari12/11/20241524
api.PointerEvent.altitudeAngle 📋Edge10/9/2020 Safari12/11/20241524
api.PointerEvent.azimuthAngle 📋Edge10/9/2020 Safari12/11/20241524
api.PointerEvent.getCoalescedEvents 📋Firefox3/13/2018 Safari12/11/20242465
Firefox for Android: The method always returns an empty array, regardless of the user's actions.
api.PointerEvent.getPredictedEvents 📋Edge1/15/2020 Safari12/11/20241792

2024/11

API First Browser Date Last Browser Date Days Notes
api.EventSource.worker_support Safari6/7/2010 Firefox11/26/20245286
Firefox: Not supported in service workers.Firefox for Android: Not supported in service workers.
api.HTMLMediaElement.waitingforkey_event 📋Safari3/25/2019 Firefox11/26/20242073
Firefox: The onwaitingforkey event handler property is not supported.Firefox for Android: The onwaitingforkey event handler property is not supported.
api.Request.Request.init_keepalive_parameter 📋Edge4/5/2017 Firefox11/26/20242792
api.Request.keepalive 📋Edge4/5/2017 Firefox11/26/20242792
api.WorkerNavigator.permissions 📋Edge1/15/2020 Firefox11/26/20241777
api.fetch.init_keepalive_parameter Edge4/5/2017 Firefox11/26/20242792

2024/10

API First Browser Date Last Browser Date Days Notes
api.HTMLImageElement.fetchPriority 📋Edge5/31/2022 Firefox10/29/2024882
api.HTMLLinkElement.fetchPriority 📋Edge5/31/2022 Firefox10/29/2024882
api.HTMLScriptElement.fetchPriority 📋Edge5/31/2022 Firefox10/29/2024882
api.HTMLVideoElement.cancelVideoFrameCallback 📋Edge5/21/2020 Firefox10/29/20241622
api.HTMLVideoElement.requestVideoFrameCallback 📋Edge5/21/2020 Firefox10/29/20241622
api.MediaStreamTrack.getCapabilities 📋Edge7/29/2015 Firefox10/29/20243380
api.Notification.silent 📋Edge4/30/2018 Firefox10/29/20242374
api.Permissions.permission_camera Edge1/15/2020 Firefox10/29/20241749
api.Permissions.permission_microphone Edge1/15/2020 Firefox10/29/20241749
api.Request.Request.init_priority_parameter 📋Edge4/28/2022 Firefox10/29/2024915
api.WebGL2RenderingContext.drawingBufferColorSpace 📋Edge8/5/2022 Firefox10/29/2024816
Firefox: Accidental early exposure with no functionality.Firefox for Android: Accidental early exposure with no functionality.
api.WebGLRenderingContext.drawingBufferColorSpace 📋Edge8/5/2022 Firefox10/29/2024816
Firefox: Accidental early exposure with no functionality.Firefox for Android: Accidental early exposure with no functionality.
api.fetch.init_priority_parameter Edge4/28/2022 Firefox10/29/2024915

2024/9

API First Browser Date Last Browser Date Days Notes
api.RTCDataChannel.binaryType.blob_value Firefox6/25/2013 Edge9/19/20244104
api.CanvasRenderingContext2D.filter 📋Firefox9/20/2016 Safari9/16/20242918
api.ContentVisibilityAutoStateChangeEvent 📋Edge12/5/2022 Safari9/16/2024651
api.ContentVisibilityAutoStateChangeEvent.ContentVisibilityAutoStateChangeEvent 📋Edge12/5/2022 Safari9/16/2024651
api.ContentVisibilityAutoStateChangeEvent.skipped 📋Edge12/5/2022 Safari9/16/2024651
api.Element.ariaBrailleLabel 📋Edge10/27/2022 Safari9/16/2024690
api.Element.ariaBrailleRoleDescription 📋Edge10/27/2022 Safari9/16/2024690
api.Element.attachShadow.options_serializable_parameter 📋Edge5/17/2024 Safari9/16/2024122
api.Element.contentvisibilityautostatechange_event 📋Edge12/5/2022 Safari9/16/2024651
Firefox: The oncontentvisibilityautostatechange event handler property is not supported.Firefox for Android: The oncontentvisibilityautostatechange event handler property is not supported.
api.Element.getHTML 📋Edge5/17/2024 Safari9/16/2024122
api.ElementInternals.ariaBrailleLabel 📋Edge10/27/2022 Safari9/16/2024690
api.ElementInternals.ariaBrailleRoleDescription 📋Edge10/27/2022 Safari9/16/2024690
api.GeolocationCoordinates.toJSON 📋Edge6/13/2024 Safari9/16/202495
api.GeolocationPosition.toJSON 📋Edge6/13/2024 Safari9/16/202495
api.HTMLCanvasElement.getContext.2d_context.options_willReadFrequently_parameter 📋Firefox3/18/2014 Safari9/16/20243835
api.HTMLInputElement.selectionchange_event 📋Firefox9/7/2021 Safari9/16/20241105
Chrome: Before Chrome 127, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.Chrome Android: Before Chrome Android 127, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.Edge: Before Edge 127, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.Opera: Before Opera 113, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.Opera Android: Before Opera Android 84, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.Safari: Before Safari 18, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 271033 for firing the event on <input> elements.Safari on iOS: Before Safari on iOS 18, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 271033 for firing the event on <input> elements.Samsung Internet: Before Samsung Internet 28.0, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.WebView Android: Before WebView Android 127, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <input> elements.WebView on iOS: Before WebView on iOS 18, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 271033 for firing the event on <input> elements.
api.HTMLTemplateElement.shadowRootClonable 📋Firefox4/16/2024 Safari9/16/2024153
api.HTMLTemplateElement.shadowRootDelegatesFocus 📋Firefox2/20/2024 Safari9/16/2024209
api.HTMLTemplateElement.shadowRootSerializable 📋Edge5/17/2024 Safari9/16/2024122
api.HTMLTextAreaElement.selectionchange_event 📋Firefox9/7/2021 Safari9/16/20241105
Chrome: Before Chrome 127, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.Chrome Android: Before Chrome Android 127, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.Edge: Before Edge 127, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.Opera: Before Opera 113, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.Opera Android: Before Opera Android 84, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.Safari: Before Safari 18, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 271033 for firing the event on <textarea> elements.Safari on iOS: Before Safari on iOS 18, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 271033 for firing the event on <textarea> elements.Samsung Internet: Before Samsung Internet 28.0, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.WebView Android: Before WebView Android 127, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 40840956 for firing the event on <textarea> elements.WebView on iOS: Before WebView on iOS 18, a selectionchange event was fired on Document, see Document's selectionchange event. See bug 271033 for firing the event on <textarea> elements.
api.Navigator.cookieEnabled 📋Firefox11/9/2004 Safari9/16/20247251
Firefox: Before Firefox 8, navigator.cookieEnabled would report the wrong result if a site exception was in place for the page on which the check was performed. This has been fixed.Firefox for Android: Before Firefox for Android 8, navigator.cookieEnabled would report the wrong result if a site exception was in place for the page on which the check was performed. This has been fixed.Internet Explorer: navigator.cookieEnabled returns true even if the browser is set to block cookies (for example, if the page is in the Restricted sites security zone).Safari: Returns true even if the browser is set to block cookies if navigator.cookieEnabled is invoked inside a third-party iframe)Safari on iOS: Returns true even if the browser is set to block cookies if navigator.cookieEnabled is invoked inside a third-party iframe)WebView on iOS: Returns true even if the browser is set to block cookies if navigator.cookieEnabled is invoked inside a third-party iframe)
api.ShadowRoot.getHTML 📋Edge5/17/2024 Safari9/16/2024122
api.ShadowRoot.serializable 📋Edge5/17/2024 Safari9/16/2024122
api.URL.parse_static 📋Firefox5/14/2024 Safari9/16/2024125
api.EncodedVideoChunk 📋Edge9/24/2021 Firefox9/3/20241075
api.EncodedVideoChunk.EncodedVideoChunk 📋Edge9/24/2021 Firefox9/3/20241075
api.EncodedVideoChunk.byteLength 📋Edge9/24/2021 Firefox9/3/20241075
api.EncodedVideoChunk.copyTo 📋Edge9/24/2021 Firefox9/3/20241075
api.EncodedVideoChunk.duration 📋Edge9/24/2021 Firefox9/3/20241075
api.EncodedVideoChunk.timestamp 📋Edge9/24/2021 Firefox9/3/20241075
api.EncodedVideoChunk.type 📋Edge9/24/2021 Firefox9/3/20241075
api.HTMLDetailsElement.name 📋Edge12/7/2023 Firefox9/3/2024271
api.VideoColorSpace 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoColorSpace.VideoColorSpace 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoColorSpace.fullRange 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoColorSpace.matrix 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoColorSpace.primaries 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoColorSpace.toJSON 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoColorSpace.transfer 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoDecoder 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoDecoder.VideoDecoder 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoDecoder.close 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoDecoder.configure 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoDecoder.decode 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoDecoder.decodeQueueSize 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoDecoder.dequeue_event 📋Edge10/3/2022 Firefox9/3/2024701
api.VideoDecoder.flush 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoDecoder.isConfigSupported_static 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoDecoder.reset 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoDecoder.state 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoEncoder 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoEncoder.VideoEncoder 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoEncoder.close 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoEncoder.configure 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoEncoder.dequeue_event 📋Edge10/3/2022 Firefox9/3/2024701
api.VideoEncoder.encode 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoEncoder.encodeQueueSize 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoEncoder.flush 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoEncoder.isConfigSupported_static 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoEncoder.reset 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoEncoder.state 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.VideoFrame 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.allocationSize 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.clone 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.close 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.codedHeight 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.codedRect 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.codedWidth 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.colorSpace 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.copyTo 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.displayHeight 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.displayWidth 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.duration 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.format 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.timestamp 📋Edge9/24/2021 Firefox9/3/20241075
api.VideoFrame.visibleRect 📋Edge9/24/2021 Firefox9/3/20241075

2024/8

API First Browser Date Last Browser Date Days Notes
api.MediaSession.setActionHandler.skipad_type Firefox10/20/2020 Edge8/22/20241402
api.CSSStartingStyleRule 📋Edge9/15/2023 Firefox8/6/2024326
api.RTCDTMFSender.canInsertDTMF 📋Edge1/15/2020 Firefox8/6/20241665
api.TextEvent 📋Safari10/26/2007 Firefox8/6/20246129
api.TextEvent.data 📋Safari10/26/2007 Firefox8/6/20246129
api.TextEvent.initTextEvent 📋Safari10/26/2007 Firefox8/6/20246129
javascript.regular_expressions.named_capturing_group.duplicate_named_capturing_groups Safari9/18/2023 Firefox8/6/2024323

2024/7

API First Browser Date Last Browser Date Days Notes
api.CSS.registerProperty_static 📋Edge1/15/2020 Firefox7/9/20241637
api.CSSPropertyRule 📋Edge8/27/2020 Firefox7/9/20241412
api.CSSPropertyRule.inherits 📋Edge8/27/2020 Firefox7/9/20241412
api.CSSPropertyRule.initialValue 📋Edge8/27/2020 Firefox7/9/20241412
api.CSSPropertyRule.name 📋Edge8/27/2020 Firefox7/9/20241412
api.CSSPropertyRule.syntax 📋Edge8/27/2020 Firefox7/9/20241412
api.HTMLBaseElement.href.forbid_special_characters Edge1/15/2020 Firefox7/9/20241637
api.RTCRtpReceiver.getParameters 📋Safari9/19/2017 Firefox7/9/20242485
api.RTCRtpReceiver.getParameters.return_object_property_codecs 📋Safari9/19/2017 Firefox7/9/20242485
api.RTCRtpSender.getParameters.return_object_property_codecs 📋Safari9/19/2017 Firefox7/9/20242485
Firefox: The property is defined but not implemented/used.Firefox for Android: The property is defined but not implemented/used.
api.RTCRtpSender.setParameters.parameters_codecs_parameter 📋Safari3/25/2019 Firefox7/9/20241933
Firefox: The property is defined but not implemented/used.Firefox for Android: The property is defined but not implemented/used.
api.RTCRtpTransceiver.setCodecPreferences 📋Edge1/15/2020 Firefox7/9/20241637
javascript.builtins.ArrayBuffer.ArrayBuffer.maxByteLength_option 📋Edge3/13/2023 Firefox7/9/2024484
javascript.builtins.ArrayBuffer.maxByteLength 📋Edge3/13/2023 Firefox7/9/2024484
javascript.builtins.ArrayBuffer.resizable 📋Edge3/13/2023 Firefox7/9/2024484
javascript.builtins.ArrayBuffer.resize 📋Edge3/13/2023 Firefox7/9/2024484
javascript.builtins.SharedArrayBuffer.SharedArrayBuffer.maxByteLength_option 📋Edge3/13/2023 Firefox7/9/2024484
javascript.builtins.SharedArrayBuffer.grow 📋Edge3/13/2023 Firefox7/9/2024484
javascript.builtins.SharedArrayBuffer.growable 📋Edge3/13/2023 Firefox7/9/2024484
javascript.builtins.SharedArrayBuffer.maxByteLength 📋Edge3/13/2023 Firefox7/9/2024484

2024/6

API First Browser Date Last Browser Date Days Notes
api.Clipboard.read 📋Edge1/15/2020 Firefox6/11/20241609
Chrome: The user must grant the clipboard-read permission.Chrome Android: The user must grant the clipboard-read permission.Edge: The user must grant the clipboard-read permission.Firefox: This method must be called within user gesture event handlers.Firefox: A paste prompt is displayed when the clipboard is read. If the clipboard contains same-origin content, the prompt is suppressed.Firefox: Web extensions with the clipboardRead permission in their manifest can read data without the paste prompt displaying. Prior to Firefox 147, extensions without this permission were unable to read clipboard data.Firefox for Android: This method must be called within user gesture event handlers.Firefox for Android: A paste prompt is displayed when the clipboard is read. If the clipboard contains same-origin content, the prompt is suppressed.Firefox for Android: Web extensions with the clipboardRead permission in their manifest can read data without the paste prompt displaying. Prior to Firefox for Android 147, extensions without this permission were unable to read clipboard data.Quest Browser: The user must grant the clipboard-read permission.Opera: The user must grant the clipboard-read permission.Opera Android: The user must grant the clipboard-read permission.Samsung Internet: The user must grant the clipboard-read permission.WebView Android: The user must grant the clipboard-read permission.
api.Clipboard.type_image-png Edge1/15/2020 Firefox6/11/20241609
api.Clipboard.type_text-html Safari3/24/2020 Firefox6/11/20241540
api.Clipboard.type_text-plain Edge1/15/2020 Firefox6/11/20241609
api.Clipboard.write 📋Edge1/15/2020 Firefox6/11/20241609
Chrome: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Chrome: Before version 107, the user must grant the clipboard-write permission.Chrome Android: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Chrome Android: Before version 107, the user must grant the clipboard-write permission.Firefox: This method must be called within user gesture event handlers.Firefox: Web extensions with the clipboardWrite permission in their manifest can write data without a user gesture.Firefox for Android: This method must be called within user gesture event handlers.Firefox for Android: Web extensions with the clipboardWrite permission in their manifest can write data without a user gesture.Quest Browser: From version false, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Quest Browser: Before version false, the user must grant the clipboard-write permission.Opera: From version 93, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Opera: Before version 93, the user must grant the clipboard-write permission.Opera Android: From version 73, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Opera Android: Before version 73, the user must grant the clipboard-write permission.Samsung Internet: From version 21.0, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Samsung Internet: Before version 21.0, the user must grant the clipboard-write permission.WebView Android: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.WebView Android: Before version 107, the user must grant the clipboard-write permission.
api.ClipboardItem 📋Edge1/15/2020 Firefox6/11/20241609
api.ClipboardItem.getType 📋Edge1/15/2020 Firefox6/11/20241609
api.ClipboardItem.types 📋Edge1/15/2020 Firefox6/11/20241609
api.VTTCue.text.all_html_character_references Edge1/15/2020 Firefox6/11/20241609
javascript.builtins.Set.difference 📋Safari9/18/2023 Firefox6/11/2024267
javascript.builtins.Set.intersection 📋Safari9/18/2023 Firefox6/11/2024267
javascript.builtins.Set.isDisjointFrom 📋Safari9/18/2023 Firefox6/11/2024267
javascript.builtins.Set.isSubsetOf 📋Safari9/18/2023 Firefox6/11/2024267
javascript.builtins.Set.isSupersetOf 📋Safari9/18/2023 Firefox6/11/2024267
javascript.builtins.Set.symmetricDifference 📋Safari9/18/2023 Firefox6/11/2024267
javascript.builtins.Set.union 📋Safari9/18/2023 Firefox6/11/2024267

2024/5

API First Browser Date Last Browser Date Days Notes
api.WebSocket.WebSocket.url_parameter_http_https_relative Safari1/22/2024 Edge5/17/2024116
api.CustomStateSet 📋Edge4/15/2021 Firefox5/14/20241125
api.CustomStateSet.@@iterator 📋Edge4/15/2021 Firefox5/14/20241125
api.CustomStateSet.add 📋Edge4/15/2021 Firefox5/14/20241125
api.CustomStateSet.clear 📋Edge4/15/2021 Firefox5/14/20241125
api.CustomStateSet.delete 📋Edge4/15/2021 Firefox5/14/20241125
api.CustomStateSet.entries 📋Edge4/15/2021 Firefox5/14/20241125
api.CustomStateSet.forEach 📋Edge4/15/2021 Firefox5/14/20241125
api.CustomStateSet.has 📋Edge4/15/2021 Firefox5/14/20241125
api.CustomStateSet.keys 📋Edge4/15/2021 Firefox5/14/20241125
api.CustomStateSet.size 📋Edge4/15/2021 Firefox5/14/20241125
api.CustomStateSet.values 📋Edge4/15/2021 Firefox5/14/20241125
api.ElementInternals.states 📋Edge4/15/2021 Firefox5/14/20241125
api.IDBFactory.databases 📋Edge1/15/2020 Firefox5/14/20241581
api.IDBTransaction.durability 📋Edge5/21/2020 Firefox5/14/20241454
api.Navigator.wakeLock 📋Edge7/16/2020 Firefox5/14/20241398
Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.
api.Permissions.permission_screen-wake-lock 📋Edge7/16/2020 Firefox5/14/20241398
Firefox: The value is recognized, but has no effect.Firefox for Android: The value is recognized, but has no effect.
api.RTCIceCandidate.address 📋Edge1/15/2020 Firefox5/14/20241581
api.RTCIceCandidate.component 📋Edge1/15/2020 Firefox5/14/20241581
api.RTCIceCandidate.foundation 📋Edge1/15/2020 Firefox5/14/20241581
api.RTCIceCandidate.port 📋Edge1/15/2020 Firefox5/14/20241581
api.RTCIceCandidate.priority 📋Edge1/15/2020 Firefox5/14/20241581
api.RTCIceCandidate.protocol 📋Edge1/15/2020 Firefox5/14/20241581
api.RTCIceCandidate.relatedAddress 📋Edge1/15/2020 Firefox5/14/20241581
api.RTCIceCandidate.relatedPort 📋Edge1/15/2020 Firefox5/14/20241581
api.RTCIceCandidate.tcpType 📋Edge1/15/2020 Firefox5/14/20241581
api.RTCIceCandidate.type 📋Edge1/15/2020 Firefox5/14/20241581
api.WakeLock 📋Edge7/16/2020 Firefox5/14/20241398
Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.
api.WakeLock.request 📋Edge7/16/2020 Firefox5/14/20241398
Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.
api.WakeLockSentinel 📋Edge7/16/2020 Firefox5/14/20241398
Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.
api.WakeLockSentinel.release 📋Edge7/16/2020 Firefox5/14/20241398
Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.
api.WakeLockSentinel.release_event 📋Edge7/16/2020 Firefox5/14/20241398
Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.
api.WakeLockSentinel.released 📋Edge11/19/2020 Firefox5/14/20241272
Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.
api.WakeLockSentinel.type 📋Edge7/16/2020 Firefox5/14/20241398
Safari on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.WebView on iOS: Does not work in standalone Home Screen Web Apps. See bug 254545.
api.CSSImportRule.supportsText 📋Firefox6/6/2023 Safari5/13/2024342

2024/4

API First Browser Date Last Browser Date Days Notes
api.AbortSignal.timeout_static 📋Firefox5/3/2022 Edge4/18/2024716
Chrome: Always aborts with an AbortError on timeout, not a TimeoutError.Chrome Android: Always aborts with an AbortError on timeout, not a TimeoutError.Edge: Always aborts with an AbortError on timeout, not a TimeoutError.Quest Browser: Always aborts with an AbortError on timeout, not a TimeoutError.Opera: Always aborts with an AbortError on timeout, not a TimeoutError.Opera Android: Always aborts with an AbortError on timeout, not a TimeoutError.Samsung Internet: Always aborts with an AbortError on timeout, not a TimeoutError.WebView Android: Always aborts with an AbortError on timeout, not a TimeoutError.
api.Element.attachShadow.options_clonable_parameter 📋Firefox2/20/2024 Edge4/18/202458
api.ShadowRoot.clonable 📋Firefox2/20/2024 Edge4/18/202458
api.Clipboard.readText 📋Edge1/15/2020 Firefox4/16/20241553
Chrome: The user must grant the clipboard-read permission.Chrome Android: The user must grant the clipboard-read permission.Edge: The user must grant the clipboard-read permission.Firefox: This method must be called within user gesture event handlers.Firefox: A paste prompt is displayed when the clipboard is read. If the clipboard contains same-origin content, the prompt is suppressed.Firefox: Web extensions with the clipboardRead permission in their manifest can read data without the paste prompt displaying. Prior to Firefox 147, extensions without this permission were unable to read clipboard data.Firefox for Android: This method must be called within user gesture event handlers.Firefox for Android: A paste prompt is displayed when the clipboard is read. If the clipboard contains same-origin content, the prompt is suppressed.Firefox for Android: Web extensions with the clipboardRead permission in their manifest can read data without the paste prompt displaying. Prior to Firefox for Android 147, extensions without this permission were unable to read clipboard data.Quest Browser: The user must grant the clipboard-read permission.Opera: The user must grant the clipboard-read permission.Opera Android: The user must grant the clipboard-read permission.Samsung Internet: The user must grant the clipboard-read permission.WebView Android: The user must grant the clipboard-read permission.
api.HTMLButtonElement.popoverTargetAction 📋Edge6/2/2023 Firefox4/16/2024319
api.HTMLButtonElement.popoverTargetElement 📋Edge6/2/2023 Firefox4/16/2024319
api.HTMLElement.beforetoggle_event 📋Edge6/2/2023 Firefox4/16/2024319
api.HTMLElement.beforetoggle_event.popover_elements 📋Edge6/2/2023 Firefox4/16/2024319
api.HTMLElement.hidePopover 📋Edge6/2/2023 Firefox4/16/2024319
api.HTMLElement.popover 📋Edge6/2/2023 Firefox4/16/2024319
Safari on iOS: On iOS and iPadOS, popovers are not dismissed when the user taps outside of the popover area, see bug 267688.WebView on iOS: On iOS and iPadOS, popovers are not dismissed when the user taps outside of the popover area, see bug 267688.
api.HTMLElement.showPopover 📋Edge6/2/2023 Firefox4/16/2024319
api.HTMLElement.togglePopover 📋Edge6/2/2023 Firefox4/16/2024319
api.HTMLElement.togglePopover.returns_boolean Edge8/21/2023 Firefox4/16/2024239
api.HTMLElement.toggle_event.popover_elements 📋Edge6/2/2023 Firefox4/16/2024319
api.HTMLInputElement.popoverTargetAction 📋Edge6/2/2023 Firefox4/16/2024319
api.HTMLInputElement.popoverTargetElement 📋Edge6/2/2023 Firefox4/16/2024319
api.RTCDtlsTransport.iceTransport 📋Edge1/15/2020 Firefox4/16/20241553
api.RTCIceTransport 📋Edge11/12/2015 Firefox4/16/20243078
api.RTCIceTransport.gatheringState 📋Safari9/19/2017 Firefox4/16/20242401
api.RTCIceTransport.gatheringstatechange_event 📋Edge1/15/2020 Firefox4/16/20241553
api.RTCIceTransport.state 📋Edge11/12/2015 Firefox4/16/20243078
api.RTCIceTransport.statechange_event 📋Edge1/15/2020 Firefox4/16/20241553
javascript.builtins.Intl.Segmenter 📋Edge11/19/2020 Firefox4/16/20241244
javascript.builtins.Intl.Segmenter.Segmenter 📋Edge11/19/2020 Firefox4/16/20241244
javascript.builtins.Intl.Segmenter.resolvedOptions 📋Edge11/19/2020 Firefox4/16/20241244
javascript.builtins.Intl.Segmenter.segment 📋Edge11/19/2020 Firefox4/16/20241244
javascript.builtins.Intl.Segmenter.supportedLocalesOf 📋Edge11/19/2020 Firefox4/16/20241244
javascript.builtins.Intl.Segments 📋Edge11/19/2020 Firefox4/16/20241244
javascript.builtins.Intl.Segments.@@iterator 📋Edge11/19/2020 Firefox4/16/20241244
javascript.builtins.Intl.Segments.containing 📋Edge11/19/2020 Firefox4/16/20241244

2024/3

API First Browser Date Last Browser Date Days Notes
api.CSSKeyframesRule.length 📋Firefox1/17/2023 Edge3/22/2024430
api.AbortSignal.any_static 📋Edge8/21/2023 Firefox3/19/2024211
api.DOMMatrixReadOnly.scaleNonUniform 📋Firefox10/14/2014 Safari3/5/20243430
api.Element.ariaDescription 📋Edge5/21/2020 Safari3/5/20241384
api.Element.checkVisibility 📋Edge9/1/2022 Safari3/5/2024551
api.Element.checkVisibility.options_checkOpacity_parameter 📋Edge9/1/2022 Safari3/5/2024551
api.Element.checkVisibility.options_checkVisibilityCSS_parameter 📋Edge9/1/2022 Safari3/5/2024551
api.Element.checkVisibility.options_contentVisibilityAuto_parameter 📋Firefox1/23/2024 Safari3/5/202442
api.Element.checkVisibility.options_opacityProperty_parameter 📋Firefox1/23/2024 Safari3/5/202442
api.Element.checkVisibility.options_visibilityProperty_parameter 📋Firefox1/23/2024 Safari3/5/202442
api.HTMLInputElement.showPicker.date_input Edge3/3/2022 Safari3/5/2024733
api.HTMLInputElement.showPicker.datetime_local_input Edge3/3/2022 Safari3/5/2024733
api.SVGFESpecularLightingElement.kernelUnitLengthX 📋Firefox6/17/2008 Safari3/5/20245740
api.SVGFESpecularLightingElement.kernelUnitLengthY 📋Firefox6/17/2008 Safari3/5/20245740
javascript.builtins.ArrayBuffer.detached 📋Edge6/2/2023 Safari3/5/2024277
javascript.builtins.ArrayBuffer.transfer 📋Edge6/2/2023 Safari3/5/2024277
javascript.builtins.ArrayBuffer.transferToFixedLength 📋Edge6/2/2023 Safari3/5/2024277
javascript.builtins.Map.groupBy 📋Edge9/15/2023 Safari3/5/2024172
javascript.builtins.Object.groupBy 📋Edge9/15/2023 Safari3/5/2024172
javascript.builtins.Promise.withResolvers 📋Edge11/2/2023 Safari3/5/2024124

2024/2

API First Browser Date Last Browser Date Days Notes
api.HTMLTemplateElement.shadowRootMode 📋Edge3/13/2023 Firefox2/20/2024344

2024/1

API First Browser Date Last Browser Date Days Notes
javascript.builtins.Array.fromAsync 📋Safari3/27/2023 Edge1/25/2024304
api.HTMLVideoElement.disablePictureInPicture 📋Edge1/15/2020 Firefox1/23/20241469
Firefox: When this property is set to true, the overlay button to disable picture-in-picture (PiP) is hidden, but the user can still enable PiP.Firefox: This property is undefined, but still has an effect if set to a value.Firefox: When this property is set to true, the overlay button to disable picture-in-picture (PiP) is hidden, but the user can still enable PiP.Firefox for Android: When this property is set to true, the overlay button to disable picture-in-picture (PiP) is hidden, but the user can still enable PiP.Firefox for Android: This property is undefined, but still has an effect if set to a value.Firefox for Android: When this property is set to true, the overlay button to disable picture-in-picture (PiP) is hidden, but the user can still enable PiP.

2023/12

API First Browser Date Last Browser Date Days Notes
api.HTMLIFrameElement.loading 📋Edge1/15/2020 Firefox12/19/20231434
api.CanvasRenderingContext2D.reset 📋Edge3/3/2022 Safari12/11/2023648
api.HTMLLinkElement.imageSizes 📋Edge1/15/2020 Safari12/11/20231426
api.HTMLLinkElement.imageSrcset 📋Edge1/15/2020 Safari12/11/20231426
api.HTMLMediaElement.preservesPitch 📋Edge10/9/2020 Safari12/11/20231158
api.OffscreenCanvasRenderingContext2D.reset 📋Edge3/3/2022 Safari12/11/2023648
api.SVGImageElement.crossOrigin 📋Firefox6/6/2023 Safari12/11/2023188
api.createImageBitmap.svgimageelement_as_source_image Firefox1/29/2019 Safari12/11/20231777
javascript.builtins.Intl.PluralRules.PluralRules.options_parameter.options_roundingMode_parameter Firefox8/1/2023 Safari12/11/2023132
api.FontFaceSet.check 📋Firefox9/22/2015 Edge12/7/20232998
Chrome: Prior to version 120, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.Chrome Android: Prior to version 120, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.Edge: Prior to version 120, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.Quest Browser: Prior to version false, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.Opera: Prior to version 106, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.Opera Android: Prior to version 80, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.Samsung Internet: Prior to version 25.0, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.WebView Android: Prior to version 120, this method returned false instead of true for nonexistent or locally installed fonts. See bug 40893726.
api.URL.canParse_static 📋Firefox7/4/2023 Edge12/7/2023156

2023/11

API First Browser Date Last Browser Date Days Notes
api.Navigator.userActivation 📋Edge1/15/2020 Firefox11/21/20231406
api.PublicKeyCredential.authenticatorAttachment 📋Edge2/3/2022 Firefox11/21/2023656
api.ToggleEvent 📋Edge6/2/2023 Firefox11/21/2023172
api.ToggleEvent.ToggleEvent 📋Edge6/2/2023 Firefox11/21/2023172
api.ToggleEvent.newState 📋Edge6/2/2023 Firefox11/21/2023172
api.ToggleEvent.oldState 📋Edge6/2/2023 Firefox11/21/2023172
api.UserActivation 📋Edge1/15/2020 Firefox11/21/20231406
api.UserActivation.hasBeenActive 📋Edge1/15/2020 Firefox11/21/20231406
api.UserActivation.isActive 📋Edge1/15/2020 Firefox11/21/20231406
api.Window.beforeunload_event.event_returnvalue_activation Firefox8/16/2011 Edge11/2/20234461
Chrome: Before Chrome 119, an empty string incorrectly activated the confirmation dialog.Chrome Android: Before Chrome Android 119, an empty string incorrectly activated the confirmation dialog.Edge: Before Edge 119, an empty string incorrectly activated the confirmation dialog.Quest Browser: Before Quest Browser false, an empty string incorrectly activated the confirmation dialog.Opera: Before Opera 105, an empty string incorrectly activated the confirmation dialog.Opera Android: Before Opera Android 79, an empty string incorrectly activated the confirmation dialog.Samsung Internet: Before Samsung Internet 25.0, an empty string incorrectly activated the confirmation dialog.WebView Android: Before WebView Android 119, an empty string incorrectly activated the confirmation dialog.
api.Window.beforeunload_event.preventdefault_activation Firefox8/16/2011 Edge11/2/20234461

2023/10

API First Browser Date Last Browser Date Days Notes
api.AuthenticatorAttestationResponse.getAuthenticatorData 📋Edge8/27/2020 Firefox10/24/20231153
api.AuthenticatorAttestationResponse.getPublicKey 📋Edge8/27/2020 Firefox10/24/20231153
api.AuthenticatorAttestationResponse.getPublicKeyAlgorithm 📋Edge8/27/2020 Firefox10/24/20231153
api.AuthenticatorAttestationResponse.getTransports 📋Edge1/15/2020 Firefox10/24/20231378
api.Element.ariaAtomic 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaAutoComplete 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaBusy 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaChecked 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaColCount 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaColIndex 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaColSpan 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaCurrent 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaDisabled 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaExpanded 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaHasPopup 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaHidden 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaInvalid 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaKeyShortcuts 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaLabel 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaLevel 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaLive 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaModal 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaMultiLine 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaMultiSelectable 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaOrientation 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaPlaceholder 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaPosInSet 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaPressed 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaReadOnly 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaRelevant Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaRequired 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaRoleDescription 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaRowCount 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaRowIndex 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaRowSpan 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaSelected 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaSetSize 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaSort 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaValueMax 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaValueMin 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaValueNow 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.ariaValueText 📋Safari3/25/2019 Firefox10/24/20231674
api.Element.role 📋Safari3/25/2019 Firefox10/24/20231674
api.ElementInternals.ariaAtomic 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaAutoComplete 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaBusy 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaChecked 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaColCount 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaColIndex 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaColSpan 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaCurrent 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaDisabled 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaExpanded 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaHasPopup 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaHidden 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaInvalid 📋Edge5/31/2022 Firefox10/24/2023511
api.ElementInternals.ariaKeyShortcuts 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaLabel 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaLevel 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaLive 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaModal 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaMultiLine 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaMultiSelectable 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaOrientation 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaPlaceholder 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaPosInSet 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaPressed 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaReadOnly 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaRelevant Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaRequired 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaRoleDescription 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaRowCount 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaRowIndex 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaRowSpan 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaSelected 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaSetSize 📋Edge7/16/2020 Firefox10/24/20231195
api.ElementInternals.ariaSort 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaValueMax 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaValueMin 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaValueNow 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.ariaValueText 📋Edge4/13/2020 Firefox10/24/20231289
api.ElementInternals.role 📋Edge6/23/2022 Firefox10/24/2023488
api.PublicKeyCredential.isConditionalMediationAvailable_static 📋Safari9/12/2022 Firefox10/24/2023407
api.SubtleCrypto.deriveKey.derivedKeyAlgorithm_option_hkdf 📋Safari9/19/2017 Firefox10/24/20232226
api.SubtleCrypto.deriveKey.derivedKeyAlgorithm_option_pbkdf2 📋Safari9/19/2017 Firefox10/24/20232226
javascript.builtins.String.isWellFormed 📋Edge3/13/2023 Firefox10/24/2023225
javascript.builtins.String.toWellFormed 📋Edge3/13/2023 Firefox10/24/2023225
api.TextMetrics.alphabeticBaseline 📋Safari4/12/2018 Edge10/13/20232010
api.TextMetrics.hangingBaseline 📋Safari4/12/2018 Edge10/13/20232010
api.TextMetrics.ideographicBaseline 📋Safari4/12/2018 Edge10/13/20232010

2023/9

API First Browser Date Last Browser Date Days Notes
api.TextMetrics.emHeightAscent 📋Safari4/12/2018 Firefox9/26/20231993
api.TextMetrics.emHeightDescent 📋Safari4/12/2018 Firefox9/26/20231993
api.CSSContainerRule.containerName 📋Firefox2/14/2023 Safari9/18/2023216
api.CSSContainerRule.containerQuery 📋Firefox2/14/2023 Safari9/18/2023216
api.CSSCounterStyleRule 📋Firefox10/14/2014 Safari9/18/20233261
api.CSSCounterStyleRule.additiveSymbols 📋Firefox10/14/2014 Safari9/18/20233261
api.CSSCounterStyleRule.fallback 📋Firefox10/14/2014 Safari9/18/20233261
api.CSSCounterStyleRule.name 📋Firefox10/14/2014 Safari9/18/20233261
api.CSSCounterStyleRule.negative 📋Firefox10/14/2014 Safari9/18/20233261
api.CSSCounterStyleRule.pad 📋Firefox10/14/2014 Safari9/18/20233261
api.CSSCounterStyleRule.prefix 📋Firefox10/14/2014 Safari9/18/20233261
api.CSSCounterStyleRule.range 📋Firefox10/14/2014 Safari9/18/20233261
api.CSSCounterStyleRule.speakAs 📋Firefox10/14/2014 Safari9/18/20233261
api.CSSCounterStyleRule.suffix 📋Firefox10/14/2014 Safari9/18/20233261
api.CSSCounterStyleRule.symbols 📋Firefox10/14/2014 Safari9/18/20233261
api.CSSCounterStyleRule.system 📋Firefox10/14/2014 Safari9/18/20233261
api.CanvasRenderingContext2D.drawImage.SVGImageElement_source_image Edge7/29/2015 Safari9/18/20232973
api.CredentialsContainer.preventSilentAccess 📋Firefox5/9/2018 Safari9/18/20231958
Safari: This method exists, but always rejected with a NotSupportedError exception.Safari on iOS: This method exists, but always rejected with a NotSupportedError exception.WebView on iOS: This method exists, but always rejected with a NotSupportedError exception.
api.CustomElementRegistry.getName 📋Firefox8/1/2023 Safari9/18/202348
Safari: Supports 'Autonomous custom elements' but not 'Customized built-in elements'.Safari on iOS: Supports 'Autonomous custom elements' but not 'Customized built-in elements'.WebView on iOS: Supports 'Autonomous custom elements' but not 'Customized built-in elements'.
api.DeviceMotionEvent 📋Firefox8/16/2011 Safari9/18/20234416
api.DeviceMotionEvent.acceleration 📋Firefox8/16/2011 Safari9/18/20234416
api.DeviceMotionEvent.accelerationIncludingGravity 📋Firefox8/16/2011 Safari9/18/20234416
api.DeviceMotionEvent.interval 📋Firefox8/16/2011 Safari9/18/20234416
api.DeviceMotionEvent.rotationRate 📋Firefox8/16/2011 Safari9/18/20234416
api.DeviceOrientationEvent 📋Firefox8/16/2011 Safari9/18/20234416
Chrome: Before version 50, Chrome provided absolute values instead of relative values for this event. Developers still needing absolute values may use the deviceorientationabsolute event.Chrome Android: Before version 50, Chrome Android provided absolute values instead of relative values for this event. Developers still needing absolute values may use the deviceorientationabsolute event.Firefox: Firefox 3.6, 4, and 5 supported mozOrientation instead of the standard DeviceOrientationEvent interface.Firefox for Android: Firefox for Android 4.6, 4, and 5 supported mozOrientation instead of the standard DeviceOrientationEvent interface.Quest Browser: Before version 5.0, Quest Browser provided absolute values instead of relative values for this event. Developers still needing absolute values may use the deviceorientationabsolute event.Samsung Internet: Before Samsung Internet 5.0, Samsung Internet provided absolute values instead of relative values for this event. Developers still needing absolute values may use the deviceorientationabsolute event.WebView Android: Before version 50, Chrome provided absolute values instead of relative values for this event. Developers still needing absolute values may use the deviceorientationabsolute event.
api.DeviceOrientationEvent.absolute 📋Firefox8/16/2011 Safari9/18/20234416
api.DeviceOrientationEvent.alpha 📋Firefox8/16/2011 Safari9/18/20234416
api.DeviceOrientationEvent.beta 📋Firefox8/16/2011 Safari9/18/20234416
api.DeviceOrientationEvent.gamma 📋Firefox8/16/2011 Safari9/18/20234416
api.Headers.getSetCookie 📋Firefox4/11/2023 Safari9/18/2023160
api.OffscreenCanvas.getContext.webgl2_context Edge1/15/2020 Safari9/18/20231342
api.OffscreenCanvas.getContext.webgl_context Edge1/15/2020 Safari9/18/20231342
api.Permissions.permission_push Firefox4/26/2016 Safari9/18/20232701
Firefox: Alias for the notifications permission (returns the same value).Firefox for Android: Alias for the notifications permission (returns the same value).
api.ReadableStreamDefaultReader.releaseLock.reject_pending_read_request Firefox6/28/2022 Safari9/18/2023447
Chrome: Before version 105, releaseLock() throws instead of rejecting.Chrome Android: Before version 105, releaseLock() throws instead of rejecting.Edge: Before version 105, releaseLock() throws instead of rejecting.Opera: Before version 91, releaseLock() throws instead of rejecting.Opera Android: Before version 72, releaseLock() throws instead of rejecting.Samsung Internet: Before version 20.0, releaseLock() throws instead of rejecting.WebView Android: Before version 105, releaseLock() throws instead of rejecting.
api.Response.json_static 📋Edge9/1/2022 Safari9/18/2023382
api.Selection.removeRange 📋Firefox11/9/2004 Safari9/18/20236887
api.StorageManager.estimate 📋Firefox11/14/2017 Safari9/18/20232134
api.URLSearchParams.delete.value_parameter Firefox7/4/2023 Safari9/18/202376
api.URLSearchParams.has.value_parameter Firefox7/4/2023 Safari9/18/202376
api.URLSearchParams.size 📋Firefox4/11/2023 Safari9/18/2023160
api.Window.devicemotion_event 📋Firefox8/16/2011 Safari9/18/20234416
api.Window.deviceorientation_event 📋Firefox8/16/2011 Safari9/18/20234416
api.createImageBitmap.options_premultiplyAlpha_parameter Edge1/15/2020 Safari9/18/20231342
Safari: If the source image is an ImageData object, then the premultiplyAlpha option does nothing. See bug 237082.Safari on iOS: If the source image is an ImageData object, then the premultiplyAlpha option does nothing. See bug 237082.WebView on iOS: If the source image is an ImageData object, then the premultiplyAlpha option does nothing. See bug 237082.
javascript.builtins.AggregateError.serializable_object Edge2/3/2022 Safari9/18/2023592
Chrome: AggregateError serializes to the Error type, without additional properties.Chrome Android: AggregateError serializes to the Error type, without additional properties.Edge: AggregateError serializes to the Error type, without additional properties.Firefox: AggregateError serializes to the AggregateError type, with properties name, message, cause, and errors.Firefox for Android: AggregateError serializes to the AggregateError type, with properties name, message, cause, and errors.Quest Browser: AggregateError serializes to the Error type, without additional properties.Opera: AggregateError serializes to the Error type, without additional properties.Opera Android: AggregateError serializes to the Error type, without additional properties.Samsung Internet: AggregateError serializes to the Error type, without additional properties.WebView Android: AggregateError serializes to the Error type, without additional properties.
javascript.builtins.Function.toString.toString_revision Firefox6/13/2017 Safari9/18/20232288
javascript.builtins.RegExp.unicodeSets 📋Edge4/6/2023 Safari9/18/2023165

2023/8

API First Browser Date Last Browser Date Days Notes
api.CSSStyleRule.cssRules 📋Edge4/6/2023 Firefox8/29/2023145
api.CSSStyleRule.deleteRule 📋Edge4/6/2023 Firefox8/29/2023145
api.CSSStyleRule.insertRule 📋Edge4/6/2023 Firefox8/29/2023145
api.CanvasRenderingContext2D.getContextAttributes 📋Edge1/15/2020 Firefox8/29/20231322
api.RTCEncodedAudioFrame 📋Edge10/9/2020 Firefox8/29/20231054
api.RTCEncodedAudioFrame.data 📋Edge10/9/2020 Firefox8/29/20231054
api.RTCEncodedAudioFrame.getMetadata 📋Edge10/9/2020 Firefox8/29/20231054
api.RTCEncodedAudioFrame.timestamp Edge10/9/2020 Firefox8/29/20231054
api.RTCEncodedVideoFrame 📋Edge10/9/2020 Firefox8/29/20231054
api.RTCEncodedVideoFrame.data 📋Edge10/9/2020 Firefox8/29/20231054
api.RTCEncodedVideoFrame.getMetadata 📋Edge10/9/2020 Firefox8/29/20231054
api.RTCEncodedVideoFrame.timestamp Edge10/9/2020 Firefox8/29/20231054
api.RTCEncodedVideoFrame.type 📋Edge10/9/2020 Firefox8/29/20231054
api.HTMLInputElement.dirName 📋Safari7/25/2012 Firefox8/1/20234024
api.HTMLTextAreaElement.dirName 📋Safari7/25/2012 Firefox8/1/20234024
api.MediaDevices.enumerateDevices 📋Edge7/29/2015 Firefox8/1/20232925
Firefox: enumerateDevices() enumerates both input and output devices. Previously only input devices were returned.Firefox: enumerateDevices() only returns input devices.Firefox for Android: enumerateDevices() enumerates both input and output devices. Previously only input devices were returned.Firefox for Android: enumerateDevices() only returns input devices.
api.TextMetrics.fontBoundingBoxAscent 📋Safari4/12/2018 Firefox8/1/20231937
api.TextMetrics.fontBoundingBoxDescent 📋Safari4/12/2018 Firefox8/1/20231937
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_roundingIncrement_parameter Safari3/14/2022 Firefox8/1/2023505
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_roundingMode_parameter Safari3/14/2022 Firefox8/1/2023505
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_roundingPriority_parameter Safari3/14/2022 Firefox8/1/2023505
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_signDisplay_parameter.negative Safari3/14/2022 Firefox8/1/2023505
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_trailingZeroDisplay_parameter Safari3/14/2022 Firefox8/1/2023505
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_useGrouping_parameter.string_values Edge10/3/2022 Firefox8/1/2023302
javascript.builtins.Intl.NumberFormat.format.number_parameter-string_decimal Safari3/14/2022 Firefox8/1/2023505
javascript.builtins.Intl.NumberFormat.formatRange 📋Safari3/14/2022 Firefox8/1/2023505
javascript.builtins.Intl.NumberFormat.formatRangeToParts 📋Safari3/14/2022 Firefox8/1/2023505
javascript.builtins.Intl.PluralRules.PluralRules.options_parameter Safari3/14/2022 Firefox8/1/2023505
javascript.builtins.Intl.PluralRules.PluralRules.options_parameter.options_roundingPriority_parameter Safari3/14/2022 Firefox8/1/2023505
javascript.builtins.Intl.PluralRules.selectRange 📋Safari3/14/2022 Firefox8/1/2023505

2023/7

API First Browser Date Last Browser Date Days Notes
javascript.builtins.Array.toReversed 📋Safari9/12/2022 Firefox7/4/2023295
javascript.builtins.Array.toSorted 📋Safari9/12/2022 Firefox7/4/2023295
javascript.builtins.Array.toSpliced 📋Safari9/12/2022 Firefox7/4/2023295
javascript.builtins.Array.with 📋Safari9/12/2022 Firefox7/4/2023295
javascript.builtins.TypedArray.toReversed 📋Safari9/12/2022 Firefox7/4/2023295
javascript.builtins.TypedArray.toSorted 📋Safari9/12/2022 Firefox7/4/2023295
javascript.builtins.TypedArray.with 📋Safari9/12/2022 Firefox7/4/2023295

2023/6

API First Browser Date Last Browser Date Days Notes
api.SharedWorker.SharedWorker.ecmascript_modules Edge2/7/2020 Firefox6/6/20231215
Safari: Nested workers support was introduced in Safari 15.5.Safari: Script loading in nested workers was introduced in Safari 16.4.Safari on iOS: Nested workers support was introduced in Safari on iOS 15.5.Safari on iOS: Script loading in nested workers was introduced in Safari on iOS 16.4.WebView on iOS: Nested workers support was introduced in WebView on iOS 15.5.WebView on iOS: Script loading in nested workers was introduced in WebView on iOS 16.4.
api.SharedWorker.SharedWorker.options_type_parameter Edge2/7/2020 Firefox6/6/20231215
api.Worker.Worker.ecmascript_modules Edge2/7/2020 Firefox6/6/20231215
Node.js: ECMAScript modules are enabled for files ending with .mjs and for files ending with .js when the nearest parent package.json file contains a top-level field "type" with a value of "module".Safari: Nested workers support was introduced in Safari 15.5.Safari: Script loading in nested workers was introduced in Safari 16.4.Safari on iOS: Nested workers support was introduced in Safari on iOS 15.5.Safari on iOS: Script loading in nested workers was introduced in Safari on iOS 16.4.WebView on iOS: Nested workers support was introduced in WebView on iOS 15.5.WebView on iOS: Script loading in nested workers was introduced in WebView on iOS 16.4.
api.Worker.Worker.options_type_parameter Edge2/7/2020 Firefox6/6/20231215
Deno: Only supports module
api.Worklet.ecmascript_modules Edge2/7/2020 Firefox6/6/20231215
Safari: Nested workers support was introduced in Safari 15.5.Safari: Script loading in nested workers was introduced in Safari 16.4.Safari on iOS: Nested workers support was introduced in Safari on iOS 15.5.Safari on iOS: Script loading in nested workers was introduced in Safari on iOS 16.4.WebView on iOS: Nested workers support was introduced in WebView on iOS 15.5.WebView on iOS: Script loading in nested workers was introduced in WebView on iOS 16.4.
javascript.operators.import.worker_support Edge2/7/2020 Firefox6/6/20231215
javascript.statements.import.worker_support Edge2/7/2020 Firefox6/6/20231215

2023/5

API First Browser Date Last Browser Date Days Notes
api.CompressionStream 📋Edge2/7/2020 Firefox5/9/20231187
Node.js: Available as a part of the stream/web module.
api.CompressionStream.CompressionStream 📋Edge2/7/2020 Firefox5/9/20231187
api.CompressionStream.CompressionStream.deflate 📋Edge2/7/2020 Firefox5/9/20231187
api.CompressionStream.CompressionStream.deflate-raw 📋Edge6/23/2022 Firefox5/9/2023320
api.CompressionStream.CompressionStream.gzip 📋Edge2/7/2020 Firefox5/9/20231187
api.CompressionStream.readable 📋Edge2/7/2020 Firefox5/9/20231187
api.CompressionStream.writable 📋Edge2/7/2020 Firefox5/9/20231187
api.DecompressionStream 📋Edge2/7/2020 Firefox5/9/20231187
Node.js: Available as a part of the stream/web module.
api.DecompressionStream.DecompressionStream 📋Edge2/7/2020 Firefox5/9/20231187
api.DecompressionStream.DecompressionStream.deflate 📋Edge2/7/2020 Firefox5/9/20231187
api.DecompressionStream.DecompressionStream.deflate-raw 📋Edge6/23/2022 Firefox5/9/2023320
api.DecompressionStream.DecompressionStream.gzip 📋Edge2/7/2020 Firefox5/9/20231187
api.DecompressionStream.readable 📋Edge2/7/2020 Firefox5/9/20231187
api.DecompressionStream.writable 📋Edge2/7/2020 Firefox5/9/20231187
api.RTCPeerConnection.connectionState 📋Safari9/19/2017 Firefox5/9/20232058
api.RTCPeerConnection.connectionstatechange_event 📋Safari9/19/2017 Firefox5/9/20232058
api.RTCPeerConnection.sctp 📋Edge1/15/2020 Firefox5/9/20231210
api.RTCRtpReceiver.getCapabilities_static 📋Edge7/29/2015 Firefox5/9/20232841
api.RTCRtpSender.getCapabilities_static 📋Edge11/12/2015 Firefox5/9/20232735
api.RTCRtpSender.setStreams 📋Edge1/15/2020 Firefox5/9/20231210
api.RTCSctpTransport 📋Edge1/15/2020 Firefox5/9/20231210
api.RTCSctpTransport.maxChannels 📋Edge1/15/2020 Firefox5/9/20231210
api.RTCSctpTransport.maxMessageSize 📋Edge1/15/2020 Firefox5/9/20231210
api.RTCSctpTransport.state 📋Edge1/15/2020 Firefox5/9/20231210
api.RTCSctpTransport.statechange_event Edge1/15/2020 Firefox5/9/20231210
api.RTCSctpTransport.transport 📋Edge1/15/2020 Firefox5/9/20231210
api.RTCStatsReport.type_media-source 📋Edge2/7/2020 Firefox5/9/20231187
api.RTCStatsReport.type_media-source.id 📋Edge2/7/2020 Firefox5/9/20231187
api.RTCStatsReport.type_media-source.kind 📋Edge2/7/2020 Firefox5/9/20231187
api.RTCStatsReport.type_media-source.timestamp 📋Edge2/7/2020 Firefox5/9/20231187
api.RTCStatsReport.type_media-source.trackIdentifier 📋Edge2/7/2020 Firefox5/9/20231187
api.RTCStatsReport.type_media-source.type 📋Edge2/7/2020 Firefox5/9/20231187
api.RTCStatsReport.type_peer-connection 📋Edge2/7/2020 Firefox5/9/20231187
api.RTCStatsReport.type_peer-connection.dataChannelsClosed 📋Edge2/7/2020 Firefox5/9/20231187
api.RTCStatsReport.type_peer-connection.dataChannelsOpened 📋Edge2/7/2020 Firefox5/9/20231187
api.RTCStatsReport.type_peer-connection.id 📋Edge2/7/2020 Firefox5/9/20231187
api.RTCStatsReport.type_peer-connection.timestamp 📋Edge2/7/2020 Firefox5/9/20231187
api.RTCStatsReport.type_peer-connection.type 📋Edge2/7/2020 Firefox5/9/20231187
api.HTMLInputElement.cancel_event 📋Firefox8/10/2021 Edge5/5/2023633

2023/4

API First Browser Date Last Browser Date Days Notes
api.CanvasRenderingContext2D.createConicGradient 📋Edge3/3/2022 Firefox4/11/2023404
Firefox: Implements an older version of the specification. The gradient starts from a line going vertically up from the center, like the equivalent CSS function.Firefox for Android: Implements an older version of the specification. The gradient starts from a line going vertically up from the center, like the equivalent CSS function.Safari: Implements an older version of the specification. The gradient starts from a line going vertically up from the center, like the equivalent CSS function.Safari on iOS: Implements an older version of the specification. The gradient starts from a line going vertically up from the center, like the equivalent CSS function.WebView on iOS: Implements an older version of the specification. The gradient starts from a line going vertically up from the center, like the equivalent CSS function.
api.CanvasRenderingContext2D.roundRect 📋Edge3/3/2022 Firefox4/11/2023404
api.HTMLElement.inert 📋Safari5/16/2022 Firefox4/11/2023330
api.OffscreenCanvasRenderingContext2D.roundRect 📋Edge3/3/2022 Firefox4/11/2023404
api.Path2D.roundRect 📋Edge3/3/2022 Firefox4/11/2023404
api.FormData.FormData.submitter Firefox3/14/2023 Edge4/6/202323
api.createImageBitmap.options_imageOrientation_parameter.from-image Safari9/12/2022 Edge4/6/2023206

2023/3

API First Browser Date Last Browser Date Days Notes
api.CSSStyleSheet.CSSStyleSheet 📋Edge1/15/2020 Safari3/27/20231167
api.CSSStyleSheet.replace 📋Edge1/15/2020 Safari3/27/20231167
Firefox: Before Firefox 121, when calling replace() repeatedly, the style is applied, but the change is not reflected in the CSS Object Model. See bug 1864815.Firefox for Android: Before Firefox for Android 121, when calling replace() repeatedly, the style is applied, but the change is not reflected in the CSS Object Model. See bug 1864815.
api.CSSStyleSheet.replaceSync 📋Edge1/15/2020 Safari3/27/20231167
api.DedicatedWorkerGlobalScope.cancelAnimationFrame 📋Edge1/15/2020 Safari3/27/20231167
api.DedicatedWorkerGlobalScope.messageerror_event 📋Firefox11/14/2017 Safari3/27/20231959
api.DedicatedWorkerGlobalScope.requestAnimationFrame 📋Edge1/15/2020 Safari3/27/20231167
Chrome: Not supported in nested Web Workers. See bug 41483010.Chrome Android: Not supported in nested Web Workers. See bug 41483010.Edge: Not supported in nested Web Workers. See bug 41483010.Quest Browser: Not supported in nested Web Workers. See bug 41483010.Opera: Not supported in nested Web Workers. See bug 41483010.Opera Android: Not supported in nested Web Workers. See bug 41483010.Samsung Internet: Not supported in nested Web Workers. See bug 41483010.
api.Document.adoptedStyleSheets 📋Edge1/15/2020 Safari3/27/20231167
api.Document.adoptedStyleSheets.mutable 📋Edge3/3/2022 Safari3/27/2023389
api.Document.exitFullscreen 📋Firefox12/11/2018 Safari3/27/20231567
Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone.
api.Document.exitFullscreen.returns_promise Firefox12/11/2018 Safari3/27/20231567
api.Document.fullscreen 📋Firefox12/11/2018 Safari3/27/20231567
Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone.
api.Document.fullscreenElement 📋Firefox12/11/2018 Safari3/27/20231567
Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone.WebView on iOS: Only available on iPad, not on iPhone.WebView on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.WebView on iOS: Only available on iPad, not on iPhone.
api.Document.fullscreenEnabled 📋Edge7/29/2015 Safari3/27/20232798
Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone.
api.Document.fullscreenchange_event 📋Firefox12/11/2018 Safari3/27/20231567
Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone.
api.Document.fullscreenerror_event 📋Firefox12/11/2018 Safari3/27/20231567
Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone.
api.Element.fullscreenchange_event 📋Firefox12/11/2018 Safari3/27/20231567
Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone.
api.Element.fullscreenerror_event 📋Firefox12/11/2018 Safari3/27/20231567
Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone.
api.Element.requestFullscreen 📋Firefox12/11/2018 Safari3/27/20231567
Firefox: Before Firefox 44, Firefox incorrectly allowed elements inside a <frame> or <object> element to request, and to be granted, fullscreen. In Firefox 44 and onwards this has been fixed: only elements in the top-level document or in an <iframe> element with the allowfullscreen attribute can be displayed fullscreen.Firefox for Android: Before Firefox for Android 44, Firefox for Android incorrectly allowed elements inside a <frame> or <object> element to request, and to be granted, fullscreen. In Firefox for Android 44 and onwards this has been fixed: only elements in the top-level document or in an <iframe> element with the allowfullscreen attribute can be displayed fullscreen.Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.Safari on iOS: Only available on iPad, not on iPhone. Shows an overlay button which can not be disabled.
api.Element.requestFullscreen.returns_promise Firefox12/11/2018 Safari3/27/20231567
api.ElementInternals 📋Edge1/15/2020 Safari3/27/20231167
api.ElementInternals.checkValidity 📋Edge1/15/2020 Safari3/27/20231167
api.ElementInternals.form 📋Edge1/15/2020 Safari3/27/20231167
api.ElementInternals.labels 📋Edge1/15/2020 Safari3/27/20231167
api.ElementInternals.reportValidity 📋Edge1/15/2020 Safari3/27/20231167
api.ElementInternals.setFormValue 📋Edge1/15/2020 Safari3/27/20231167
api.ElementInternals.setValidity 📋Edge1/15/2020 Safari3/27/20231167
api.ElementInternals.shadowRoot 📋Edge1/21/2021 Safari3/27/2023795
api.ElementInternals.validationMessage 📋Edge1/15/2020 Safari3/27/20231167
api.ElementInternals.validity 📋Edge1/15/2020 Safari3/27/20231167
api.ElementInternals.willValidate 📋Edge1/15/2020 Safari3/27/20231167
api.FileSystemDirectoryHandle.@@asyncIterator 📋Edge10/9/2020 Safari3/27/2023899
api.FileSystemSyncAccessHandle.close.sync_version Edge12/5/2022 Safari3/27/2023112
api.FileSystemSyncAccessHandle.flush.sync_version Edge12/5/2022 Safari3/27/2023112
api.FileSystemSyncAccessHandle.getSize.sync_version Edge12/5/2022 Safari3/27/2023112
api.FileSystemSyncAccessHandle.truncate.sync_version Edge12/5/2022 Safari3/27/2023112
api.GamepadHapticActuator 📋Edge4/5/2017 Safari3/27/20232182
api.GamepadHapticActuator.type Edge4/5/2017 Safari3/27/20232182
api.HTMLCanvasElement.transferControlToOffscreen 📋Edge1/15/2020 Safari3/27/20231167
api.HTMLElement.attachInternals 📋Edge1/15/2020 Safari3/27/20231167
api.HTMLSlotElement.assign 📋Edge7/22/2021 Safari3/27/2023613
Chrome: Before Chrome 95, the method accepted any Node instead of just Element and Text.Chrome: Accepted sequence<Node> instead of (Element or Text)....Chrome Android: Before Chrome Android 95, the method accepted any Node instead of just Element and Text.Chrome Android: Accepted sequence<Node> instead of (Element or Text)....Edge: Before Edge 95, the method accepted any Node instead of just Element and Text.Edge: Accepted sequence<Node> instead of (Element or Text)....Quest Browser: Before Quest Browser 18.0, the method accepted any Node instead of just Element and Text.Quest Browser: Accepted sequence<Node> instead of (Element or Text)....Opera: Before Opera 81, the method accepted any Node instead of just Element and Text.Opera: Accepted sequence<Node> instead of (Element or Text)....Opera Android: Before Opera Android 67, the method accepted any Node instead of just Element and Text.Opera Android: Accepted sequence<Node> instead of (Element or Text)....Samsung Internet: Before Samsung Internet 17.0, the method accepted any Node instead of just Element and Text.Samsung Internet: Accepted sequence<Node> instead of (Element or Text)....WebView Android: Before WebView Android 95, the method accepted any Node instead of just Element and Text.WebView Android: Accepted sequence<Node> instead of (Element or Text)....
api.InputEvent.isComposing 📋Firefox7/22/2014 Safari3/27/20233170
api.MessagePort.messageerror_event 📋Firefox11/14/2017 Safari3/27/20231959
Node.js: Supports the event, but only via Node EventEmitter.Node.js: Supports the event, but only via Node EventEmitter.
api.Navigator.pdfViewerEnabled 📋Edge9/24/2021 Safari3/27/2023549
api.OffscreenCanvas 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvas.OffscreenCanvas 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvas.convertToBlob 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvas.getContext 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvas.getContext.2d_context Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvas.getContext.bitmaprenderer_context Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvas.height 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvas.transferToImageBitmap 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvas.width 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.arc 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.arcTo 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.beginPath 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.bezierCurveTo 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.canvas 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.clearRect 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.clip 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.closePath 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.createConicGradient 📋Edge3/3/2022 Safari3/27/2023389
api.OffscreenCanvasRenderingContext2D.createImageData 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.createLinearGradient 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.createPattern 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.createRadialGradient 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.direction 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.drawImage 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.ellipse 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.fill 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.fillRect 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.fillStyle 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.fillText 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.getImageData 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.getLineDash 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.getTransform 📋Edge2/7/2020 Safari3/27/20231144
api.OffscreenCanvasRenderingContext2D.globalAlpha 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.globalCompositeOperation 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.imageSmoothingEnabled 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.isPointInPath 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.isPointInStroke 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.lineCap 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.lineDashOffset 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.lineJoin 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.lineTo 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.lineWidth 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.measureText 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.miterLimit 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.moveTo 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.putImageData 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.quadraticCurveTo 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.rect 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.resetTransform 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.restore 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.rotate 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.save 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.scale 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.setLineDash 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.setTransform 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.shadowBlur 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.shadowColor 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.shadowOffsetX 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.shadowOffsetY 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.stroke 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.strokeRect 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.strokeStyle 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.strokeText 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.textAlign 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.textBaseline 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.transform 📋Edge1/15/2020 Safari3/27/20231167
api.OffscreenCanvasRenderingContext2D.translate 📋Edge1/15/2020 Safari3/27/20231167
api.PerformanceResourceTiming.decodedBodySize 📋Firefox3/8/2016 Safari3/27/20232575
api.PerformanceResourceTiming.encodedBodySize 📋Firefox3/8/2016 Safari3/27/20232575
api.PerformanceResourceTiming.serverTiming 📋Firefox6/26/2018 Safari3/27/20231735
api.PerformanceResourceTiming.transferSize 📋Firefox3/8/2016 Safari3/27/20232575
api.PerformanceServerTiming 📋Firefox6/26/2018 Safari3/27/20231735
api.PerformanceServerTiming.description 📋Firefox6/26/2018 Safari3/27/20231735
api.PerformanceServerTiming.duration 📋Firefox6/26/2018 Safari3/27/20231735
api.PerformanceServerTiming.name 📋Firefox6/26/2018 Safari3/27/20231735
api.PerformanceServerTiming.toJSON 📋Firefox6/26/2018 Safari3/27/20231735
api.PermissionStatus.change_event 📋Firefox4/26/2016 Safari3/27/20232526
Safari: The onchange event handler is supported, but the event never fires. See bug 259432.Safari on iOS: The onchange event handler is supported, but the event never fires. See bug 259432.WebView on iOS: The onchange event handler is supported, but the event never fires. See bug 259432.
api.Permissions.permission_notifications Firefox4/26/2016 Safari3/27/20232526
Firefox: Alias for the push permission (returns the same value).Firefox for Android: Alias for the push permission (returns the same value).
api.RTCStatsReport.type_inbound-rtp.trackIdentifier 📋Edge9/1/2022 Safari3/27/2023207
api.Report 📋Firefox1/29/2019 Safari3/27/20231518
Firefox: Worker support added in version 77
api.Report.body 📋Firefox1/29/2019 Safari3/27/20231518
api.Report.toJSON Edge1/15/2020 Safari3/27/20231167
api.Report.type 📋Firefox1/29/2019 Safari3/27/20231518
api.Report.url 📋Firefox1/29/2019 Safari3/27/20231518
api.ReportBody 📋Firefox1/29/2019 Safari3/27/20231518
api.ReportBody.toJSON Edge1/15/2020 Safari3/27/20231167
api.ReportingObserver 📋Firefox1/29/2019 Safari3/27/20231518
api.ReportingObserver.ReportingObserver 📋Firefox1/29/2019 Safari3/27/20231518
api.ReportingObserver.disconnect 📋Firefox1/29/2019 Safari3/27/20231518
api.ReportingObserver.observe 📋Firefox1/29/2019 Safari3/27/20231518
api.ReportingObserver.takeRecords 📋Firefox1/29/2019 Safari3/27/20231518
api.SVGStyleElement.sheet 📋Firefox11/29/2005 Safari3/27/20236327
api.Screen.orientation 📋Firefox12/15/2015 Safari3/27/20232659
Edge: Edge does not return an Orientation object; instead, it returns the orientation type as a string.Internet Explorer: Not supported on Windows 7.
api.ScreenOrientation 📋Firefox12/15/2015 Safari3/27/20232659
api.ScreenOrientation.angle 📋Firefox12/15/2015 Safari3/27/20232659
api.ScreenOrientation.change_event 📋Firefox12/15/2015 Safari3/27/20232659
api.ScreenOrientation.type 📋Firefox12/15/2015 Safari3/27/20232659
api.ServiceWorkerContainer.messageerror_event 📋Firefox1/29/2019 Safari3/27/20231518
Safari: Although the onmessageerror event handler property is supported, the messageerror event is never fired.Safari on iOS: Although the onmessageerror event handler property is supported, the messageerror event is never fired.
api.ShadowRoot.adoptedStyleSheets 📋Edge1/15/2020 Safari3/27/20231167
api.ShadowRoot.fullscreenElement 📋Firefox12/11/2018 Safari3/27/20231567
Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.WebView on iOS: Only available on iPad, not on iPhone.WebView on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.
api.ShadowRoot.slotAssignment 📋Edge10/9/2020 Safari3/27/2023899
api.Window.messageerror_event 📋Firefox11/14/2017 Safari3/27/20231959
api.Worker.worker_support Firefox12/1/2014 Safari3/27/20233038
Chrome: Not available in Shared Workers. See bug 40695450.Chrome Android: Not available in Shared Workers. See bug 40695450.Edge: Not available in Shared Workers. See bug 40695450.Quest Browser: Not available in Shared Workers. See bug 40695450.Opera: Not available in Shared Workers. See bug 40695450.Opera Android: Not available in Shared Workers. See bug 40695450.Safari: Not available in Shared Workers. See bug 265263.Safari on iOS: Not available in Shared Workers. See bug 265263.Samsung Internet: Not available in Shared Workers. See bug 40695450.WebView Android: Not available in Shared Workers. See bug 40695450.WebView on iOS: Not available in Shared Workers. See bug 265263.
api.WritableStreamDefaultController.signal 📋Edge2/3/2022 Safari3/27/2023417
javascript.classes.static.initialization_blocks 📋Edge9/24/2021 Safari3/27/2023549
javascript.operators.import_meta.resolve 📋Edge9/1/2022 Safari3/27/2023207
Node.js: Returns a URL object instead of a string.
javascript.regular_expressions.lookbehind_assertion 📋Edge1/15/2020 Safari3/27/20231167
api.FileSystemDirectoryHandle 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemDirectoryHandle.entries 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemDirectoryHandle.getDirectoryHandle 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemDirectoryHandle.getFileHandle 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemDirectoryHandle.keys 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemDirectoryHandle.removeEntry 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemDirectoryHandle.resolve 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemDirectoryHandle.values 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemFileHandle 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemFileHandle.createSyncAccessHandle 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemFileHandle.getFile 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemHandle 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemHandle.isSameEntry 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemHandle.kind 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemHandle.name 📋Edge10/9/2020 Firefox3/14/2023886
api.FileSystemSyncAccessHandle 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemSyncAccessHandle.close 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemSyncAccessHandle.flush 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemSyncAccessHandle.getSize 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemSyncAccessHandle.read 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemSyncAccessHandle.truncate 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemSyncAccessHandle.write 📋Safari12/13/2021 Firefox3/14/2023456
api.HTMLElement.translate 📋Safari7/25/2012 Firefox3/14/20233884
api.HTMLFormElement.rel 📋Safari3/14/2022 Firefox3/14/2023365
api.HTMLFormElement.relList 📋Safari3/14/2022 Firefox3/14/2023365
api.StorageManager.getDirectory 📋Edge10/9/2020 Firefox3/14/2023886
api.CSSFontFeatureValuesRule.fontFamily 📋Firefox12/1/2014 Edge3/13/20233024

2023/2

API First Browser Date Last Browser Date Days Notes
api.CSSContainerRule 📋Edge9/1/2022 Firefox2/14/2023166
api.CSSPageRule.selectorText 📋Safari10/26/2007 Firefox2/14/20235590
api.HTMLElement.autofocus 📋Edge1/15/2020 Firefox2/14/20231126
Chrome: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Chrome Android: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Edge: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Firefox: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Firefox for Android: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Internet Explorer: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Quest Browser: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Opera: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Opera Android: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Safari: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Safari on iOS: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.Samsung Internet: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.WebView Android: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.WebView on iOS: Supported for HTMLButtonElement, HTMLInputElement, HTMLSelectElement, and HTMLTextAreaElement.
api.MathMLElement.autofocus 📋Safari3/14/2022 Firefox2/14/2023337
api.RTCPeerConnection.addTransceiver.init_sendEncodings_parameter Edge1/15/2020 Firefox2/14/20231126
api.RTCRtpSender.getParameters.return_object_property_transactionId 📋Safari3/25/2019 Firefox2/14/20231422
api.RTCRtpSender.setParameters.parameters_encodings_parameter.active Safari4/12/2018 Firefox2/14/20231769
api.RTCRtpSender.setParameters.parameters_transactionId_parameter 📋Safari3/25/2019 Firefox2/14/20231422
api.SVGElement.autofocus 📋Edge1/15/2020 Firefox2/14/20231126
Firefox: Only supported on SVGGraphicsElement.Firefox for Android: Only supported on SVGGraphicsElement.

2023/1

API First Browser Date Last Browser Date Days Notes
api.MathMLElement 📋Firefox12/10/2019 Edge1/12/20231129
api.MathMLElement.blur 📋Firefox12/10/2019 Edge1/12/20231129
api.MathMLElement.dataset 📋Firefox12/10/2019 Edge1/12/20231129
api.MathMLElement.focus 📋Firefox12/10/2019 Edge1/12/20231129
api.MathMLElement.style 📋Firefox12/10/2019 Edge1/12/20231129
api.MathMLElement.tabIndex 📋Firefox12/10/2019 Edge1/12/20231129

2022/12

API First Browser Date Last Browser Date Days Notes
api.HTMLSourceElement.height 📋Edge4/15/2021 Firefox12/13/2022607
api.HTMLSourceElement.width 📋Edge4/15/2021 Firefox12/13/2022607
api.OES_draw_buffers_indexed 📋Edge4/1/2022 Firefox12/13/2022256
api.OES_draw_buffers_indexed.blendEquationSeparateiOES 📋Edge4/1/2022 Firefox12/13/2022256
api.OES_draw_buffers_indexed.blendEquationiOES 📋Edge4/1/2022 Firefox12/13/2022256
api.OES_draw_buffers_indexed.blendFuncSeparateiOES 📋Edge4/1/2022 Firefox12/13/2022256
api.OES_draw_buffers_indexed.blendFunciOES 📋Edge4/1/2022 Firefox12/13/2022256
api.OES_draw_buffers_indexed.colorMaskiOES 📋Edge4/1/2022 Firefox12/13/2022256
api.OES_draw_buffers_indexed.disableiOES 📋Edge4/1/2022 Firefox12/13/2022256
api.OES_draw_buffers_indexed.enableiOES 📋Edge4/1/2022 Firefox12/13/2022256
api.HTMLMediaElement.srcObject 📋Firefox11/3/2015 Edge12/5/20222589
Chrome: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).Chrome: Support added for MediaStream objects (see bug 41186131).Chrome Android: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).Chrome Android: Support added for MediaStream objects (see bug 41186131).Edge: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).Edge: Support added for MediaStream objects (see bug 41186131).Firefox: Only supports MediaStream objects (see bug 886194).Firefox for Android: Only supports MediaStream objects (see bug 886194).Quest Browser: Support added for MediaStream objects (see bug 41186131).Opera: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).Opera: Support added for MediaStream objects (see bug 41186131).Opera Android: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).Opera Android: Support added for MediaStream objects (see bug 41186131).Samsung Internet: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).Samsung Internet: Support added for MediaStream objects (see bug 41186131).WebView Android: Support added for MediaSourceHandle objects transferred from dedicated workers where they were obtained from MediaSource.handle (see bug 40591101).WebView Android: Support added for MediaStream objects (see bug 41186131).

2022/11

API First Browser Date Last Browser Date Days Notes
api.CSSFontPaletteValuesRule 📋Safari3/14/2022 Firefox11/15/2022246
api.CSSFontPaletteValuesRule.basePalette 📋Safari3/14/2022 Firefox11/15/2022246
api.CSSFontPaletteValuesRule.fontFamily 📋Safari3/14/2022 Firefox11/15/2022246
api.CSSFontPaletteValuesRule.name 📋Safari3/14/2022 Firefox11/15/2022246
api.CSSFontPaletteValuesRule.overrideColors 📋Safari3/14/2022 Firefox11/15/2022246

2022/10

API First Browser Date Last Browser Date Days Notes
api.HTMLMetaElement.media 📋Edge9/2/2021 Firefox10/18/2022411
api.RTCStatsReport.type_inbound-rtp.concealmentEvents 📋Edge10/9/2020 Firefox10/18/2022739
api.RTCStatsReport.type_inbound-rtp.fecPacketsDiscarded 📋Edge4/13/2020 Firefox10/18/2022918
api.RTCStatsReport.type_inbound-rtp.fecPacketsReceived 📋Edge4/13/2020 Firefox10/18/2022918
api.RTCStatsReport.type_inbound-rtp.headerBytesReceived 📋Edge2/7/2020 Firefox10/18/2022984
api.RTCStatsReport.type_inbound-rtp.insertedSamplesForDeceleration 📋Edge10/9/2020 Firefox10/18/2022739
api.RTCStatsReport.type_inbound-rtp.removedSamplesForAcceleration 📋Edge10/9/2020 Firefox10/18/2022739
api.RTCStatsReport.type_inbound-rtp.totalAudioEnergy 📋Edge10/9/2020 Firefox10/18/2022739
api.RTCStatsReport.type_inbound-rtp.totalSamplesDuration 📋Edge10/9/2020 Firefox10/18/2022739

2022/9

API First Browser Date Last Browser Date Days Notes
api.FontFace.worker_support Edge1/15/2020 Firefox9/20/2022979
api.FontFaceSet.worker_support Edge1/15/2020 Firefox9/20/2022979
api.TextDecoderStream 📋Edge1/15/2020 Firefox9/20/2022979
Node.js: Available as a part of the stream/web module.
api.TextDecoderStream.TextDecoderStream 📋Edge1/15/2020 Firefox9/20/2022979
api.TextDecoderStream.encoding 📋Edge1/15/2020 Firefox9/20/2022979
api.TextDecoderStream.fatal 📋Edge1/15/2020 Firefox9/20/2022979
api.TextDecoderStream.ignoreBOM 📋Edge1/15/2020 Firefox9/20/2022979
api.TextDecoderStream.readable 📋Edge1/15/2020 Firefox9/20/2022979
api.TextDecoderStream.writable 📋Edge1/15/2020 Firefox9/20/2022979
api.TextEncoderStream 📋Edge1/15/2020 Firefox9/20/2022979
Node.js: Available as a part of the stream/web module.
api.TextEncoderStream.TextEncoderStream 📋Edge1/15/2020 Firefox9/20/2022979
api.TextEncoderStream.encoding 📋Edge1/15/2020 Firefox9/20/2022979
api.TextEncoderStream.readable 📋Edge1/15/2020 Firefox9/20/2022979
api.TextEncoderStream.writable 📋Edge1/15/2020 Firefox9/20/2022979
api.WorkerGlobalScope.fonts 📋Edge1/15/2020 Firefox9/20/2022979
api.EXT_texture_compression_bptc 📋Firefox7/9/2019 Safari9/12/20221161
Chrome: Only supported on macOS.Edge: Only supported on macOS.Opera: Only supported on macOS.
api.Element.animate.options_composite_parameter 📋Edge7/16/2020 Safari9/12/2022788
api.FetchEvent.handled 📋Edge10/9/2020 Safari9/12/2022703
api.FetchEvent.resultingClientId 📋Firefox1/29/2019 Safari9/12/20221322
api.HTMLFormElement.requestSubmit 📋Edge1/15/2020 Safari9/12/2022971
api.HTMLInputElement.showPicker 📋Edge3/3/2022 Safari9/12/2022193
api.HTMLInputElement.showPicker.color_input Edge3/3/2022 Safari9/12/2022193
api.HTMLInputElement.showPicker.file_input Edge3/3/2022 Safari9/12/2022193
api.HTMLScriptElement.supports_static 📋Firefox11/2/2021 Safari9/12/2022314
api.KeyframeEffect.composite 📋Edge7/16/2020 Safari9/12/2022788
api.Navigator.permissions 📋Firefox4/26/2016 Safari9/12/20222330
api.Notification.data 📋Firefox12/1/2014 Safari9/12/20222842
api.NotificationEvent 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.NotificationEvent.NotificationEvent 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PermissionStatus 📋Firefox4/26/2016 Safari9/12/20222330
api.PermissionStatus.name 📋Firefox10/5/2021 Safari9/12/2022342
api.PermissionStatus.state 📋Firefox4/26/2016 Safari9/12/20222330
api.Permissions 📋Firefox4/26/2016 Safari9/12/20222330
api.Permissions.permission_geolocation Firefox4/26/2016 Safari9/12/20222330
api.Permissions.query 📋Firefox4/26/2016 Safari9/12/20222330
api.PushEvent 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushEvent.PushEvent 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushEvent.data 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushManager 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushManager.getSubscription 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushManager.permissionState 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushManager.subscribe 📋Firefox1/26/2016 Safari9/12/20222421
Chrome: The options parameter with a applicationServerKey value is required.Chrome Android: The options parameter with a applicationServerKey value is required.Edge: The options parameter with a applicationServerKey value is required.Firefox: From Firefox 72 onwards, can only be called in response to a user gesture such as a click event.Firefox for Android: From Firefox Android 79 onwards, can only be called in response to a user gesture such as a click event.Quest Browser: The options parameter with a applicationServerKey value is required.Opera Android: The options parameter with a applicationServerKey value is required.Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.Samsung Internet: The options parameter with a applicationServerKey value is required.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushMessageData 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushMessageData.arrayBuffer 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushMessageData.blob 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushMessageData.json 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushMessageData.text 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushSubscription 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushSubscription.endpoint 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushSubscription.expirationTime 📋Edge4/30/2018 Safari9/12/20221596
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushSubscription.getKey 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushSubscription.options 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushSubscription.toJSON 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushSubscription.unsubscribe 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushSubscriptionOptions 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.PushSubscriptionOptions.applicationServerKey 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.ServiceWorkerGlobalScope.notificationclick_event 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.
api.ServiceWorkerGlobalScope.notificationclose_event 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.
api.ServiceWorkerGlobalScope.push_event 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.ServiceWorkerRegistration.getNotifications 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.ServiceWorkerRegistration.pushManager 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.ServiceWorkerRegistration.showNotification 📋Firefox1/26/2016 Safari9/12/20222421
Safari: Notifications are supported on macOS Ventura and later.Safari on iOS: Notifications are supported in web apps saved to the home screen.WebView on iOS: Notifications are supported in web apps saved to the home screen.
api.SharedWorker 📋Firefox4/29/2014 Safari9/12/20223058
api.SharedWorker.SharedWorker 📋Firefox4/29/2014 Safari9/12/20223058
api.SharedWorker.error_event 📋Firefox4/29/2014 Safari9/12/20223058
api.SharedWorker.port 📋Firefox4/29/2014 Safari9/12/20223058
api.SharedWorkerGlobalScope 📋Firefox4/29/2014 Safari9/12/20223058
api.SharedWorkerGlobalScope.close 📋Firefox4/29/2014 Safari9/12/20223058
api.SharedWorkerGlobalScope.connect_event 📋Firefox4/29/2014 Safari9/12/20223058
Firefox: Before version 65 the data property of the event object was null; it is now initialized to an empty string, as per spec.Firefox for Android: Before version 65 the data property of the event object was null; it is now initialized to an empty string, as per spec.
api.SharedWorkerGlobalScope.name 📋Firefox4/29/2014 Safari9/12/20223058
api.SpeechSynthesis.voiceschanged_event 📋Edge8/2/2016 Safari9/12/20222232
api.SpeechSynthesisErrorEvent.SpeechSynthesisErrorEvent 📋Firefox9/20/2016 Safari9/12/20222183
api.SpeechSynthesisEvent.SpeechSynthesisEvent 📋Edge8/2/2016 Safari9/12/20222232
api.SpeechSynthesisEvent.charLength 📋Edge4/5/2017 Safari9/12/20221986
api.SpeechSynthesisEvent.utterance 📋Edge8/2/2016 Safari9/12/20222232
api.WindowClient.navigate 📋Firefox11/15/2016 Safari9/12/20222127
Safari: This method exists, but always throws NotSupportedError.Safari on iOS: This method exists, but always throws NotSupportedError.
api.WorkerGlobalScope.importScripts.mime_checks Firefox5/21/2019 Safari9/12/20221210
javascript.classes.public_class_fields 📋Firefox9/3/2019 Safari9/12/20221105
Safari: Parentheses in field initializers can lead to ReferenceErrors. See bug 236843.Safari: Doesn't support public static fields. See bug 194095.Safari on iOS: Parentheses in field initializers can lead to ReferenceErrors. See bug 236843.Safari on iOS: Doesn't support public static fields. See bug 194095.WebView on iOS: Parentheses in field initializers can lead to ReferenceErrors. See bug 236843.WebView on iOS: Doesn't support public static fields. See bug 194095.

2022/8

API First Browser Date Last Browser Date Days Notes
api.RTCStatsReport.type_inbound-rtp.concealedSamples 📋Edge10/9/2020 Firefox8/23/2022683
api.RTCStatsReport.type_inbound-rtp.jitterBufferDelay 📋Edge10/9/2020 Firefox8/23/2022683
api.RTCStatsReport.type_inbound-rtp.jitterBufferEmittedCount 📋Edge10/9/2020 Firefox8/23/2022683
api.RTCStatsReport.type_inbound-rtp.silentConcealedSamples 📋Edge10/9/2020 Firefox8/23/2022683
api.RTCStatsReport.type_inbound-rtp.totalSamplesReceived 📋Edge10/9/2020 Firefox8/23/2022683
api.SVGStyleElement.disabled 📋Safari7/25/2012 Firefox8/23/20223681
javascript.builtins.Array.findLast 📋Edge1/6/2022 Firefox8/23/2022229
javascript.builtins.Array.findLastIndex 📋Edge1/6/2022 Firefox8/23/2022229
javascript.builtins.TypedArray.findLast 📋Edge1/6/2022 Firefox8/23/2022229
javascript.builtins.TypedArray.findLastIndex 📋Edge1/6/2022 Firefox8/23/2022229

2022/7

API First Browser Date Last Browser Date Days Notes
api.Performance.measure.measureOptions_parameter Edge1/15/2020 Firefox7/26/2022923
api.Performance.measure.returns_performancemeasure Edge1/15/2020 Firefox7/26/2022923
api.PerformanceMeasure.detail 📋Edge1/15/2020 Firefox7/26/2022923
api.caches.secure_context_required Safari4/12/2018 Firefox7/26/20221566

2022/6

API First Browser Date Last Browser Date Days Notes
api.ReadableStream.pipeThrough 📋Safari3/27/2017 Firefox6/28/20221919
api.TransformStream 📋Edge1/15/2020 Firefox6/28/2022895
Node.js: Available as a part of the stream/web module.
api.TransformStream.TransformStream 📋Edge1/15/2020 Firefox6/28/2022895
api.TransformStream.readable 📋Edge1/15/2020 Firefox6/28/2022895
api.TransformStream.writable 📋Edge1/15/2020 Firefox6/28/2022895
api.TransformStreamDefaultController 📋Edge1/15/2020 Firefox6/28/2022895
Deno: TransformStreamDefaultController is not exposed on the global scope.Node.js: Available as a part of the stream/web module.
api.TransformStreamDefaultController.desiredSize 📋Edge1/15/2020 Firefox6/28/2022895
api.TransformStreamDefaultController.enqueue 📋Edge1/15/2020 Firefox6/28/2022895
api.TransformStreamDefaultController.error 📋Edge1/15/2020 Firefox6/28/2022895
api.TransformStreamDefaultController.terminate 📋Edge1/15/2020 Firefox6/28/2022895

2022/5

API First Browser Date Last Browser Date Days Notes
api.CanvasRenderingContext2D.direction 📋Safari9/30/2015 Firefox5/31/20222435
api.Performance.mark.markOptions_parameter Edge1/15/2020 Firefox5/31/2022867
api.Performance.mark.returns_performancemark Edge1/15/2020 Firefox5/31/2022867
api.PerformanceMark.PerformanceMark 📋Edge1/15/2020 Firefox5/31/2022867
api.PerformanceMark.detail 📋Edge1/15/2020 Firefox5/31/2022867
api.RTCRtpSender.setParameters.parameters_encodings_parameter.maxFramerate 📋Safari9/19/2017 Firefox5/31/20221715
Firefox: Zero is treated as 'no fps limit' (see bug 1611957).Firefox for Android: Zero is treated as 'no fps limit' (see bug 1611957).
api.RTCStatsReport.type_outbound-rtp.headerBytesSent 📋Edge2/7/2020 Firefox5/3/2022816
api.RTCStatsReport.type_outbound-rtp.retransmittedBytesSent 📋Edge2/7/2020 Firefox5/3/2022816
api.RTCStatsReport.type_outbound-rtp.retransmittedPacketsSent 📋Edge2/7/2020 Firefox5/3/2022816
api.ReadableStream.pipeTo 📋Safari3/27/2017 Firefox5/3/20221863
api.ReadableStreamDefaultReader.ReadableStreamDefaultReader 📋Safari9/20/2016 Firefox5/3/20222051
api.WritableStream 📋Edge10/17/2017 Firefox5/3/20221659
Node.js: Available as a part of the stream/web module.
api.WritableStream.WritableStream 📋Edge10/17/2017 Firefox5/3/20221659
api.WritableStream.abort 📋Edge10/17/2017 Firefox5/3/20221659
api.WritableStream.close 📋Edge4/13/2020 Firefox5/3/2022750
api.WritableStream.getWriter 📋Edge10/17/2017 Firefox5/3/20221659
api.WritableStream.locked 📋Edge10/17/2017 Firefox5/3/20221659
api.WritableStreamDefaultController 📋Edge10/17/2017 Firefox5/3/20221659
Node.js: Available as a part of the stream/web module.
api.WritableStreamDefaultController.error 📋Edge10/17/2017 Firefox5/3/20221659
api.WritableStreamDefaultWriter 📋Edge10/17/2017 Firefox5/3/20221659
Node.js: Available as a part of the stream/web module.
api.WritableStreamDefaultWriter.WritableStreamDefaultWriter 📋Edge1/15/2020 Firefox5/3/2022839
api.WritableStreamDefaultWriter.abort 📋Edge10/17/2017 Firefox5/3/20221659
api.WritableStreamDefaultWriter.close 📋Edge10/17/2017 Firefox5/3/20221659
api.WritableStreamDefaultWriter.closed 📋Edge10/17/2017 Firefox5/3/20221659
api.WritableStreamDefaultWriter.desiredSize 📋Edge10/17/2017 Firefox5/3/20221659
api.WritableStreamDefaultWriter.ready 📋Edge10/17/2017 Firefox5/3/20221659
api.WritableStreamDefaultWriter.releaseLock 📋Edge10/17/2017 Firefox5/3/20221659
api.WritableStreamDefaultWriter.write 📋Edge10/17/2017 Firefox5/3/20221659

2022/4

API First Browser Date Last Browser Date Days Notes
api.MediaCapabilities.encodingInfo 📋Firefox10/23/2018 Edge4/28/20221283
Firefox: The webrtc value of the type option is named transmission.Firefox for Android: The webrtc value of the type option is named transmission.
api.FetchEvent.preloadResponse 📋Edge10/2/2018 Firefox4/5/20221281
api.NavigationPreloadManager 📋Edge10/2/2018 Firefox4/5/20221281
api.NavigationPreloadManager.disable 📋Edge10/2/2018 Firefox4/5/20221281
api.NavigationPreloadManager.enable 📋Edge10/2/2018 Firefox4/5/20221281
api.NavigationPreloadManager.getState 📋Edge10/2/2018 Firefox4/5/20221281
api.NavigationPreloadManager.setHeaderValue 📋Edge10/2/2018 Firefox4/5/20221281
api.RTCPeerConnection.setConfiguration 📋Safari9/19/2017 Firefox4/5/20221659
api.ServiceWorkerRegistration.navigationPreload 📋Edge4/30/2018 Firefox4/5/20221436
api.AbortSignal.throwIfAborted 📋Firefox2/8/2022 Edge4/1/202252
api.Window.moveTo.relative-multi-screen Safari6/23/2003 Edge4/1/20226857
Chrome: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Chrome Android: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Edge: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Firefox: Multi-screen coordinates are used, but windows are clamped to their existing displays.Firefox for Android: Multi-screen coordinates are used, but windows are clamped to their existing displays.Quest Browser: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Opera: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Opera Android: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.Samsung Internet: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.WebView Android: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.WebView on iOS: Coordinate origin used is inconsistent/unreliable.
api.Window.open.relative-multi-screen Safari6/23/2003 Edge4/1/20226857
Chrome: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Chrome Android: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Edge: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Quest Browser: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Opera: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Opera Android: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.Samsung Internet: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.WebView Android: Without the window-management permission, multi-screen coordinates are used, but windows are clamped to their existing displays.WebView on iOS: Coordinate origin used is inconsistent/unreliable.
api.Window.screenLeft.relative-multi-screen Safari6/23/2003 Edge4/1/20226857
Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.WebView on iOS: Coordinate origin used is inconsistent/unreliable.
api.Window.screenTop.relative-multi-screen Safari6/23/2003 Edge4/1/20226857
Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.WebView on iOS: Coordinate origin used is inconsistent/unreliable.
api.Window.screenX.relative-multi-screen Safari6/23/2003 Edge4/1/20226857
Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.WebView on iOS: Coordinate origin used is inconsistent/unreliable.
api.Window.screenY.relative-multi-screen Safari6/23/2003 Edge4/1/20226857
Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.WebView on iOS: Coordinate origin used is inconsistent/unreliable.

2022/3

API First Browser Date Last Browser Date Days Notes
api.AbortController.abort.reason_parameter 📋Edge2/3/2022 Safari3/14/202239
api.AbortSignal.abort_static.reason_parameter 📋Edge2/3/2022 Safari3/14/202239
api.AbortSignal.reason 📋Edge2/3/2022 Safari3/14/202239
api.BroadcastChannel 📋Firefox5/12/2015 Safari3/14/20222498
Node.js: Available as a part of the worker_threads module.
api.BroadcastChannel.BroadcastChannel 📋Firefox5/12/2015 Safari3/14/20222498
api.BroadcastChannel.close 📋Firefox5/12/2015 Safari3/14/20222498
api.BroadcastChannel.message_event 📋Firefox5/12/2015 Safari3/14/20222498
api.BroadcastChannel.messageerror_event 📋Firefox11/14/2017 Safari3/14/20221581
api.BroadcastChannel.name 📋Firefox5/12/2015 Safari3/14/20222498
api.BroadcastChannel.postMessage 📋Firefox5/12/2015 Safari3/14/20222498
api.CSSImportRule.layerName 📋Firefox2/8/2022 Safari3/14/202234
api.CSSLayerBlockRule 📋Firefox2/8/2022 Safari3/14/202234
api.CSSLayerBlockRule.name 📋Firefox2/8/2022 Safari3/14/202234
api.CSSLayerStatementRule 📋Firefox2/8/2022 Safari3/14/202234
api.CSSLayerStatementRule.nameList 📋Firefox2/8/2022 Safari3/14/202234
api.Crypto.randomUUID 📋Edge7/22/2021 Safari3/14/2022235
Node.js: Since 14.17.0 and 15.6.0, a similar method is available via the crypto module.
api.Document.securitypolicyviolation_event 📋Edge1/15/2020 Safari3/14/2022789
api.HTMLDialogElement 📋Edge1/15/2020 Safari3/14/2022789
api.HTMLDialogElement.cancel_event 📋Edge1/15/2020 Safari3/14/2022789
api.HTMLDialogElement.close 📋Edge1/15/2020 Safari3/14/2022789
api.HTMLDialogElement.close_event 📋Edge1/15/2020 Safari3/14/2022789
api.HTMLDialogElement.open 📋Edge1/15/2020 Safari3/14/2022789
api.HTMLDialogElement.returnValue 📋Edge1/15/2020 Safari3/14/2022789
api.HTMLDialogElement.show 📋Edge1/15/2020 Safari3/14/2022789
api.HTMLDialogElement.showModal 📋Edge1/15/2020 Safari3/14/2022789
api.HTMLElement.nonce 📋Edge1/15/2020 Safari3/14/2022789
Safari: The property is defined only for its useful elements: <link>, <script>, and <style>; it is undefined for all other elements.Safari on iOS: The property is defined only for its useful elements: <link>, <script>, and <style>; it is undefined for all other elements.WebView on iOS: The property is defined only for its useful elements: <link>, <script>, and <style>; it is undefined for all other elements.
api.HTMLImageElement.loading 📋Edge1/15/2020 Safari3/14/2022789
api.Lock 📋Edge1/15/2020 Safari3/14/2022789
api.Lock.mode 📋Edge1/15/2020 Safari3/14/2022789
api.Lock.name 📋Edge1/15/2020 Safari3/14/2022789
api.LockManager 📋Edge1/15/2020 Safari3/14/2022789
api.LockManager.query 📋Edge1/15/2020 Safari3/14/2022789
api.LockManager.request 📋Edge1/15/2020 Safari3/14/2022789
api.Navigator.hardwareConcurrency 📋Firefox8/2/2016 Safari3/14/20222050
Safari: The value of this property is clamped to 4 or 8 cores, to prevent device fingerprinting. See bug 233381.Safari on iOS: The value of this property is clamped to 4 or 8 cores, to prevent device fingerprinting. See bug 233381.WebView on iOS: The value of this property is clamped to 4 or 8 cores, to prevent device fingerprinting. See bug 233381.
api.Navigator.locks 📋Edge1/15/2020 Safari3/14/2022789
api.RTCDtlsTransport 📋Edge7/29/2015 Safari3/14/20222420
api.RTCDtlsTransport.state 📋Edge7/29/2015 Safari3/14/20222420
api.RTCDtlsTransport.statechange_event Edge1/15/2020 Safari3/14/2022789
api.RTCPeerConnection.canTrickleIceCandidates 📋Firefox6/7/2016 Safari3/14/20222106
api.RTCPeerConnection.setRemoteDescription.implicit_rollback Firefox10/22/2019 Safari3/14/2022874
api.RTCRtpReceiver.transport 📋Edge7/29/2015 Safari3/14/20222420
api.RTCRtpSender.transport 📋Edge11/12/2015 Safari3/14/20222314
api.RTCStatsReport.type_inbound-rtp.packetsDiscarded 📋Edge9/24/2021 Safari3/14/2022171
api.RTCStatsReport.type_outbound-rtp.nackCount 📋Firefox8/8/2017 Safari3/14/20221679
api.ResizeObserver.observe.options_box_parameter Firefox9/3/2019 Safari3/14/2022923
Firefox: Before version 93, the device-pixel-content-box value is not supported.Firefox for Android: Before version 93, the device-pixel-content-box value is not supported.
api.ResizeObserverEntry.borderBoxSize 📋Edge7/16/2020 Safari3/14/2022606
Firefox: Implemented as a single object representing a content box size, rather than an array of content box size objects.Firefox for Android: Implemented as a single object representing a content box size, rather than an array of content box size objects.
api.ResizeObserverEntry.contentBoxSize 📋Edge7/16/2020 Safari3/14/2022606
Firefox: Implemented as a single object representing a content box size, rather than an array of content box size objects.Firefox for Android: Implemented as a single object representing a content box size, rather than an array of content box size objects.
api.ResizeObserverSize 📋Firefox9/3/2019 Safari3/14/2022923
api.ResizeObserverSize.blockSize 📋Firefox9/3/2019 Safari3/14/2022923
api.ResizeObserverSize.inlineSize 📋Firefox9/3/2019 Safari3/14/2022923
api.SVGElement.nonce 📋Edge1/15/2020 Safari3/14/2022789
api.SubmitEvent.submitter 📋Firefox4/7/2020 Safari3/14/2022706
Safari: Property is not set for <button> elements. See bug 229660.Safari on iOS: Property is not set for <button> elements. See bug 229660.WebView on iOS: Property is not set for <button> elements. See bug 229660.
api.WorkerNavigator.hardwareConcurrency 📋Firefox8/2/2016 Safari3/14/20222050
Safari: The value of this property is clamped to 4 or 8 cores, to prevent device fingerprinting. See bug 233381.Safari on iOS: The value of this property is clamped to 4 or 8 cores, to prevent device fingerprinting. See bug 233381.WebView on iOS: The value of this property is clamped to 4 or 8 cores, to prevent device fingerprinting. See bug 233381.
api.WorkerNavigator.locks 📋Edge1/15/2020 Safari3/14/2022789
api.WorkerNavigator.mediaCapabilities 📋Firefox10/23/2018 Safari3/14/20221238
api.reportError 📋Firefox10/5/2021 Safari3/14/2022160
api.structuredClone 📋Firefox11/2/2021 Safari3/14/2022132
Deno: The message parameter does not support cloning Blob values.Deno: The message parameter does not support cloning Blob values.Deno: The transfer parameter does not accept ArrayBuffer items. Passing an ArrayBuffer results in an error being thrown.
javascript.builtins.Array.at 📋Firefox7/13/2021 Safari3/14/2022244
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeZoneName_parameter.extended_values Firefox8/10/2021 Safari3/14/2022216
javascript.builtins.Intl.supportedValuesOf 📋Firefox10/5/2021 Safari3/14/2022160
javascript.builtins.Intl.supportedValuesOf.key_parameter_calendar Firefox10/5/2021 Safari3/14/2022160
javascript.builtins.Intl.supportedValuesOf.key_parameter_collation Firefox10/5/2021 Safari3/14/2022160
javascript.builtins.Intl.supportedValuesOf.key_parameter_currency Firefox10/5/2021 Safari3/14/2022160
javascript.builtins.Intl.supportedValuesOf.key_parameter_numberingSystem Firefox10/5/2021 Safari3/14/2022160
javascript.builtins.Intl.supportedValuesOf.key_parameter_timeZone Firefox10/5/2021 Safari3/14/2022160
javascript.builtins.Intl.supportedValuesOf.key_parameter_unit Firefox10/5/2021 Safari3/14/2022160
javascript.builtins.Object.hasOwn 📋Edge9/2/2021 Safari3/14/2022193
javascript.builtins.String.at 📋Firefox7/13/2021 Safari3/14/2022244
javascript.builtins.TypedArray.at 📋Firefox7/13/2021 Safari3/14/2022244
api.HTMLElement.outerText 📋Safari4/15/2005 Firefox3/8/20226171
api.RTCStatsReport.type_codec 📋Edge2/7/2020 Firefox3/8/2022760
api.RTCStatsReport.type_codec.channels 📋Edge5/21/2020 Firefox3/8/2022656
api.RTCStatsReport.type_codec.clockRate 📋Edge2/7/2020 Firefox3/8/2022760
api.RTCStatsReport.type_codec.id 📋Edge2/7/2020 Firefox3/8/2022760
api.RTCStatsReport.type_codec.mimeType 📋Edge2/7/2020 Firefox3/8/2022760
api.RTCStatsReport.type_codec.payloadType 📋Edge2/7/2020 Firefox3/8/2022760
api.RTCStatsReport.type_codec.sdpFmtpLine 📋Edge5/21/2020 Firefox3/8/2022656
api.RTCStatsReport.type_codec.timestamp 📋Edge2/7/2020 Firefox3/8/2022760
api.RTCStatsReport.type_codec.type 📋Edge2/7/2020 Firefox3/8/2022760
api.RTCStatsReport.type_outbound-rtp.codecId 📋Safari9/19/2017 Firefox3/8/20221631
api.RTCStatsReport.type_remote-inbound-rtp.codecId 📋Safari9/19/2017 Firefox3/8/20221631
api.RTCStatsReport.type_remote-outbound-rtp.codecId 📋Safari9/19/2017 Firefox3/8/20221631
api.console.profileEnd_static Safari6/8/2009 Firefox3/8/20224656
Firefox: The method can be called, but the marker does not show up in the performance profile.Firefox for Android: The method can be called, but the marker does not show up in the performance profile.
api.console.profile_static Safari6/8/2009 Firefox3/8/20224656
Firefox: The method can be called, but the marker does not show up in the performance profile.Firefox for Android: The method can be called, but the marker does not show up in the performance profile.
api.console.timeStamp_static Safari7/25/2012 Firefox3/8/20223513
Firefox: The method can be called, but the marker does not show up in the performance profile.Firefox for Android: The method can be called, but the marker does not show up in the performance profile.
api.createImageBitmap.options_colorSpaceConversion_parameter Edge1/15/2020 Firefox3/8/2022783
api.createImageBitmap.options_resizeHeight_parameter Edge1/15/2020 Firefox3/8/2022783
api.createImageBitmap.options_resizeWidth_parameter Edge1/15/2020 Firefox3/8/2022783

2022/2

API First Browser Date Last Browser Date Days Notes
api.ImageBitmapRenderingContext.canvas 📋Safari4/12/2018 Firefox2/8/20221398

2022/1

API First Browser Date Last Browser Date Days Notes
api.Navigator.canShare 📋Safari9/16/2020 Firefox1/11/2022482
Chrome: Only supported on ChromeOS and Windows, see bug 40542648 and bug 40729163.Edge: Only supported on Windows.Opera: Only supported on ChromeOS and Windows, see bug 40542648 and bug 40729163.
api.Navigator.canShare.data_text_parameter 📋Edge4/13/2020 Firefox1/11/2022638
api.RTCStatsReport.type_remote-inbound-rtp.roundTripTime 📋Edge2/7/2020 Firefox1/11/2022704

2021/12

API First Browser Date Last Browser Date Days Notes
api.Navigator.storage 📋Firefox11/14/2017 Safari12/13/20211490
api.StorageManager 📋Firefox11/14/2017 Safari12/13/20211490
api.StorageManager.persist 📋Firefox11/14/2017 Safari12/13/20211490
api.StorageManager.persisted 📋Firefox11/14/2017 Safari12/13/20211490
api.WorkerNavigator.storage 📋Firefox11/14/2017 Safari12/13/20211490
api.crossOriginIsolated 📋Firefox1/7/2020 Safari12/13/2021706
javascript.builtins.Atomics 📋Edge1/15/2020 Safari12/13/2021698
Safari: Before Safari 16.4, Atomics is gated behind COOP/COEP. For more detail, read Making your website "cross-origin isolated" using COOP and COEP.Safari on iOS: Before Safari on iOS 16.4, Atomics is gated behind COOP/COEP. For more detail, read Making your website "cross-origin isolated" using COOP and COEP.WebView on iOS: Before WebView on iOS 16.4, Atomics is gated behind COOP/COEP. For more detail, read Making your website "cross-origin isolated" using COOP and COEP.
javascript.builtins.Atomics.add 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.Atomics.and 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.Atomics.compareExchange 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.Atomics.exchange 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.Atomics.isLockFree 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.Atomics.load 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.Atomics.notify 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.Atomics.or 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.Atomics.store 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.Atomics.sub 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.Atomics.wait 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.Atomics.xor 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.DataView.DataView.sharedarraybuffer_support Edge1/15/2020 Safari12/13/2021698
javascript.builtins.SharedArrayBuffer 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.SharedArrayBuffer.@@species 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.SharedArrayBuffer.SharedArrayBuffer 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.SharedArrayBuffer.byteLength 📋Edge1/15/2020 Safari12/13/2021698
javascript.builtins.SharedArrayBuffer.slice 📋Edge1/15/2020 Safari12/13/2021698
api.HTMLElement.inputMode 📋Safari3/25/2019 Firefox12/7/2021988

2021/11

API First Browser Date Last Browser Date Days Notes
api.Element.attachShadow.options_delegatesFocus_parameter 📋Edge1/15/2020 Firefox11/2/2021657
api.HTMLElement.enterKeyHint 📋Edge1/15/2020 Firefox11/2/2021657
api.ShadowRoot.delegatesFocus 📋Edge1/15/2020 Firefox11/2/2021657

2021/10

API First Browser Date Last Browser Date Days Notes
api.SVGAnimationElement.endEvent_event 📋Safari9/20/2016 Firefox10/5/20211841
Chrome: The onend event handler property is not supported.Chrome Android: The onend event handler property is not supported.Firefox: The onend event handler property is not supported.Firefox for Android: The onend event handler property is not supported.Opera: The onend event handler property is not supported.Opera Android: The onend event handler property is not supported.Safari: The onend event handler property is not supported.Safari on iOS: The onend event handler property is not supported.Samsung Internet: The onend event handler property is not supported.WebView Android: The onend event handler property is not supported.WebView on iOS: The onend event handler property is not supported.
api.createImageBitmap.options_imageOrientation_parameter Edge1/15/2020 Firefox10/5/2021629

2021/9

API First Browser Date Last Browser Date Days Notes
api.AbortSignal.abort_static 📋Firefox4/19/2021 Safari9/20/2021154
api.CanvasRenderingContext2D.drawImage.ImageBitmap_source_image Firefox11/3/2015 Safari9/20/20212148
api.Crypto.subtle.secure_context_required Edge1/15/2020 Safari9/20/2021614
api.EXT_color_buffer_float 📋Firefox1/24/2017 Safari9/20/20211700
api.EventTarget.addEventListener.options_parameter.options_signal_parameter 📋Firefox2/23/2021 Safari9/20/2021209
api.FormDataEvent 📋Firefox1/7/2020 Safari9/20/2021622
api.FormDataEvent.FormDataEvent 📋Firefox1/7/2020 Safari9/20/2021622
api.FormDataEvent.formData 📋Firefox1/7/2020 Safari9/20/2021622
api.HTMLCanvasElement.getContext.webgl2_context Firefox1/24/2017 Safari9/20/20211700
api.HTMLCanvasElement.getContext.webgl2_context.options_alpha_parameter 📋Firefox6/10/2014 Safari9/20/20212659
api.HTMLCanvasElement.getContext.webgl2_context.options_failIfMajorPerformanceCaveat_parameter 📋Firefox9/22/2015 Safari9/20/20212190
api.HTMLCanvasElement.getContext.webgl2_context.options_powerPreference_parameter 📋Firefox10/23/2018 Safari9/20/20211063
Chrome: Chrome respects the GPU hint on macOS only.Chrome Android: Chrome Android respects the GPU hint on macOS only.Edge: Edge respects the GPU hint on macOS only.Firefox: Firefox respects the GPU hint on macOS only.Quest Browser: Quest Browser respects the GPU hint on macOS only.Opera: Opera respects the GPU hint on macOS only.Opera Android: Opera Android respects the GPU hint on macOS only.Samsung Internet: Samsung Internet respects the GPU hint on macOS only.WebView Android: WebView Android respects the GPU hint on macOS only.
api.HTMLElement.focus.options_preventScroll_parameter Edge4/30/2018 Safari9/20/20211239
api.HTMLFormElement.formdata_event 📋Firefox1/7/2020 Safari9/20/2021622
api.IDBCursor.request 📋Edge1/15/2020 Safari9/20/2021614
api.IDBFactory.open 📋Firefox1/31/2012 Safari9/20/20213520
Safari: In some releases of Safari 14, the first indexedDB.open() call hangs forever, see bug 226547.Safari on iOS: In some releases of Safari on iOS 14, the first indexedDB.open() call hangs forever, see bug 226547.WebView on iOS: In some releases of WebView on iOS 14, the first indexedDB.open() call hangs forever, see bug 226547.
api.IDBTransaction.commit 📋Edge1/15/2020 Safari9/20/2021614
api.ImageBitmap 📋Firefox11/3/2015 Safari9/20/20212148
api.ImageBitmap.close 📋Firefox4/26/2016 Safari9/20/20211973
api.ImageBitmap.height 📋Firefox11/3/2015 Safari9/20/20212148
api.ImageBitmap.width 📋Firefox11/3/2015 Safari9/20/20212148
api.MediaError.message 📋Firefox3/7/2017 Safari9/20/20211658
api.MediaSession 📋Edge1/15/2020 Safari9/20/2021614
Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface.
api.MediaSession.metadata 📋Edge1/15/2020 Safari9/20/2021614
Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface.
api.MediaSession.playbackState 📋Edge1/15/2020 Safari9/20/2021614
Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface.
api.MediaSession.setActionHandler 📋Edge1/15/2020 Safari9/20/2021614
Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface.
api.MediaSession.setActionHandler.nexttrack_type Edge1/15/2020 Safari9/20/2021614
api.MediaSession.setActionHandler.pause_type Edge1/15/2020 Safari9/20/2021614
api.MediaSession.setActionHandler.play_type Edge1/15/2020 Safari9/20/2021614
api.MediaSession.setActionHandler.previoustrack_type Edge1/15/2020 Safari9/20/2021614
api.MediaSession.setActionHandler.seekbackward_type Edge1/15/2020 Safari9/20/2021614
api.MediaSession.setActionHandler.seekforward_type Edge1/15/2020 Safari9/20/2021614
api.MediaSession.setActionHandler.seekto_type Edge1/15/2020 Safari9/20/2021614
api.MediaSession.setActionHandler.stop_type Edge1/15/2020 Safari9/20/2021614
api.MediaSession.setPositionState 📋Edge4/13/2020 Safari9/20/2021525
Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface.
api.Navigator.mediaSession 📋Edge1/15/2020 Safari9/20/2021614
api.Notification.requestPermission_static 📋Firefox6/25/2013 Safari9/20/20213009
Firefox: From Firefox 70 onwards, cannot be called from a cross-origin iframe.Firefox: From Firefox 72 onwards, can only be called in response to a user gesture such as a click event.Firefox for Android: From Firefox Android 79 onwards, cannot be called from a cross-origin iframe.Firefox for Android: From Firefox Android 79 onwards, can only be called in response to a user gesture such as a click event.Safari: Only supported the deprecated callback syntax.Safari on iOS: The parent Notification interface is undefined unless the page is a web app saved to the home screen. The app's manifest must have a non-default display value.
api.Notification.requestPermission_static.returns_promise Firefox4/26/2016 Safari9/20/20211973
api.Performance.timeOrigin 📋Firefox4/19/2017 Safari9/20/20211615
api.PerformanceNavigationTiming 📋Edge7/29/2015 Safari9/20/20212245
api.PerformanceNavigationTiming.domComplete 📋Edge7/29/2015 Safari9/20/20212245
api.PerformanceNavigationTiming.domContentLoadedEventEnd 📋Edge7/29/2015 Safari9/20/20212245
api.PerformanceNavigationTiming.domContentLoadedEventStart 📋Edge7/29/2015 Safari9/20/20212245
api.PerformanceNavigationTiming.domInteractive 📋Edge7/29/2015 Safari9/20/20212245
api.PerformanceNavigationTiming.loadEventEnd 📋Edge7/29/2015 Safari9/20/20212245
api.PerformanceNavigationTiming.loadEventStart 📋Edge7/29/2015 Safari9/20/20212245
api.PerformanceNavigationTiming.redirectCount 📋Edge7/29/2015 Safari9/20/20212245
api.PerformanceNavigationTiming.toJSON 📋Edge10/17/2017 Safari9/20/20211434
api.PerformanceNavigationTiming.type 📋Edge7/29/2015 Safari9/20/20212245
api.PerformanceNavigationTiming.unloadEventEnd 📋Edge7/29/2015 Safari9/20/20212245
api.PerformanceNavigationTiming.unloadEventStart 📋Edge7/29/2015 Safari9/20/20212245
api.PerformanceObserver.takeRecords 📋Firefox5/9/2018 Safari9/20/20211230
api.RTCRtpSender.getParameters.return_object_property_rtcp 📋Firefox4/26/2016 Safari9/20/20211973
Firefox: The property is defined but not implemented/used.Firefox for Android: The property is defined but not implemented/used.
api.RTCRtpSender.setParameters.parameters_rtcp_parameter 📋Firefox4/26/2016 Safari9/20/20211973
Firefox: The property is defined but not implemented/used.Firefox for Android: The property is defined but not implemented/used.
api.SVGElement.focus.options_preventScroll_parameter Edge4/30/2018 Safari9/20/20211239
api.SecurityPolicyViolationEvent.disposition 📋Firefox10/23/2018 Safari9/20/20211063
api.SecurityPolicyViolationEvent.sample 📋Firefox10/23/2018 Safari9/20/20211063
api.SubmitEvent 📋Firefox4/7/2020 Safari9/20/2021531
api.SubmitEvent.SubmitEvent 📋Firefox4/7/2020 Safari9/20/2021531
api.SubtleCrypto.secure_context_required Edge1/15/2020 Safari9/20/2021614
api.WebGL2RenderingContext 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.activeTexture 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.attachShader 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.beginQuery 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.beginTransformFeedback 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.bindAttribLocation 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.bindBuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.bindBufferBase 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.bindBufferRange 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.bindFramebuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.bindRenderbuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.bindSampler 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.bindTexture 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.bindTransformFeedback 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.bindVertexArray 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.blendColor 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.blendEquation 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.blendEquationSeparate 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.blendFunc 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.blendFuncSeparate 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.blitFramebuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.bufferData 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.bufferSubData 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.canvas 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.checkFramebufferStatus 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.clear 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.clearBufferfi 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.clearBufferfv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.clearBufferiv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.clearBufferuiv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.clearColor 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.clearDepth 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.clearStencil 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.clientWaitSync 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.colorMask 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.compileShader 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.compressedTexImage2D 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.compressedTexImage3D 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.compressedTexSubImage2D 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.compressedTexSubImage3D 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.copyBufferSubData 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.copyTexImage2D 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.copyTexSubImage2D 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.copyTexSubImage3D 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.createBuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.createFramebuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.createProgram 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.createQuery 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.createRenderbuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.createSampler 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.createShader 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.createTexture 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.createTransformFeedback 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.createVertexArray 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.cullFace 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.deleteBuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.deleteFramebuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.deleteProgram 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.deleteQuery 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.deleteRenderbuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.deleteSampler 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.deleteShader 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.deleteSync 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.deleteTexture 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.deleteTransformFeedback 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.deleteVertexArray 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.depthFunc 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.depthMask 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.depthRange 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.detachShader 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.disable 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.disableVertexAttribArray 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.drawArrays 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.drawArraysInstanced 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.drawBuffers 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.drawElements 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.drawElementsInstanced 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.drawRangeElements 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.drawingBufferHeight 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.drawingBufferWidth 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.enable 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.enableVertexAttribArray 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.endQuery 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.endTransformFeedback 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.fenceSync 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.finish 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.flush 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.framebufferRenderbuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.framebufferTexture2D 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.framebufferTextureLayer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.frontFace 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.generateMipmap 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getActiveAttrib 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getActiveUniform 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getActiveUniformBlockName 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getActiveUniformBlockParameter 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getActiveUniforms 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getAttachedShaders 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getAttribLocation 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getBufferParameter 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getBufferSubData 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getContextAttributes 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getError 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getExtension 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getFragDataLocation 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getFramebufferAttachmentParameter 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getIndexedParameter 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getInternalformatParameter 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getParameter 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getProgramInfoLog 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getProgramParameter 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getQuery 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getQueryParameter 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getRenderbufferParameter 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getSamplerParameter 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getShaderInfoLog 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getShaderParameter 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getShaderPrecisionFormat 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getShaderSource 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getSupportedExtensions 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getSyncParameter 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getTexParameter 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getTransformFeedbackVarying 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getUniform 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getUniformBlockIndex 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getUniformIndices 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getUniformLocation 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getVertexAttrib 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.getVertexAttribOffset 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.hint 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.invalidateFramebuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.invalidateSubFramebuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.isBuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.isContextLost 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.isEnabled 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.isFramebuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.isProgram 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.isQuery 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.isRenderbuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.isSampler 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.isShader 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.isSync 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.isTexture 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.isTransformFeedback 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.isVertexArray 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.lineWidth 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.linkProgram 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.pauseTransformFeedback 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.pixelStorei 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.polygonOffset 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.readBuffer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.readPixels 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.renderbufferStorage 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.renderbufferStorageMultisample 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.resumeTransformFeedback 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.sampleCoverage 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.samplerParameterf 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.samplerParameteri 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.scissor 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.shaderSource 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.stencilFunc 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.stencilFuncSeparate 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.stencilMask 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.stencilMaskSeparate 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.stencilOp 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.stencilOpSeparate 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.texImage2D 📋Firefox1/24/2017 Safari9/20/20211700
Firefox for Android: Textures from video elements are not supported. See bug 1884282.
api.WebGL2RenderingContext.texImage3D 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.texParameterf 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.texParameteri 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.texStorage2D 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.texStorage3D 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.texSubImage2D 📋Firefox1/24/2017 Safari9/20/20211700
Firefox for Android: Textures from video elements are not supported. See bug 1884282.
api.WebGL2RenderingContext.texSubImage3D 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.transformFeedbackVaryings 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform1f 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform1fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform1i 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform1iv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform1ui 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform1uiv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform2f 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform2fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform2i 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform2iv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform2ui 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform2uiv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform3f 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform3fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform3i 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform3iv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform3ui 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform3uiv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform4f 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform4fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform4i 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform4iv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform4ui 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniform4uiv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniformBlockBinding 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniformMatrix2fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniformMatrix2x3fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniformMatrix2x4fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniformMatrix3fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniformMatrix3x2fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniformMatrix3x4fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniformMatrix4fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniformMatrix4x2fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.uniformMatrix4x3fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.useProgram 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.validateProgram 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttrib1f 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttrib1fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttrib2f 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttrib2fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttrib3f 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttrib3fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttrib4f 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttrib4fv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttribDivisor 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttribI4i 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttribI4iv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttribI4ui 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttribI4uiv 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttribIPointer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.vertexAttribPointer 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.viewport 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGL2RenderingContext.waitSync 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGLQuery 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGLSampler 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGLSync 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGLTransformFeedback 📋Firefox1/24/2017 Safari9/20/20211700
api.WebGLVertexArrayObject 📋Firefox1/24/2017 Safari9/20/20211700
api.WheelEvent.pinch_to_zoom_support Firefox8/8/2017 Safari9/20/20211504
api.XMLHttpRequest.send.body_URLSearchParams_type Firefox1/26/2016 Safari9/20/20212064
Safari: Doesn't send the correct Content-Type header by default. See bug 227477.Safari on iOS: Doesn't send the correct Content-Type header by default. See bug 227477.WebView on iOS: Doesn't send the correct Content-Type header by default. See bug 227477.
api.createImageBitmap 📋Firefox11/3/2015 Safari9/20/20212148
javascript.builtins.BigInt64Array 📋Firefox7/9/2019 Safari9/20/2021804
javascript.builtins.BigInt64Array.BigInt64Array 📋Firefox7/9/2019 Safari9/20/2021804
javascript.builtins.BigUint64Array 📋Firefox7/9/2019 Safari9/20/2021804
javascript.builtins.BigUint64Array.BigUint64Array 📋Firefox7/9/2019 Safari9/20/2021804
javascript.builtins.DataView.getBigInt64 📋Firefox7/9/2019 Safari9/20/2021804
javascript.builtins.DataView.getBigUint64 📋Firefox7/9/2019 Safari9/20/2021804
javascript.builtins.DataView.setBigInt64 📋Firefox7/9/2019 Safari9/20/2021804
javascript.builtins.DataView.setBigUint64 📋Firefox7/9/2019 Safari9/20/2021804
javascript.builtins.Error.Error.options_cause_parameter 📋Firefox8/10/2021 Safari9/20/202141
javascript.builtins.Error.cause 📋Firefox8/10/2021 Safari9/20/202141
Chrome: Before version 125, default console logging for Error objects does not print the cause.Chrome Android: Before version 125, default console logging for Error objects does not print the cause.Edge: Before version 125, default console logging for Error objects does not print the cause.Quest Browser: Before version false, default console logging for Error objects does not print the cause.Opera: Before version 111, default console logging for Error objects does not print the cause.Opera Android: Before version 83, default console logging for Error objects does not print the cause.Safari: Default console logging for Error objects does not print the cause.Safari on iOS: Default console logging for Error objects does not print the cause.Samsung Internet: Before version 27.0, default console logging for Error objects does not print the cause.WebView Android: Before version 125, default console logging for Error objects does not print the cause.WebView on iOS: Default console logging for Error objects does not print the cause.
javascript.builtins.RegExp.hasIndices 📋Edge4/15/2021 Safari9/20/2021158
javascript.classes.private_class_fields_in 📋Edge5/27/2021 Safari9/20/2021116
javascript.classes.private_class_methods 📋Edge7/16/2020 Safari9/20/2021431
javascript.operators.await.top_level 📋Edge3/4/2021 Safari9/20/2021200
Node.js: Not supported in CommonJS modules.Safari: Doesn't support multiple modules simultaneously importing a module containing a top-level await (see bug 242740).Safari on iOS: Doesn't support multiple modules simultaneously importing a module containing a top-level await (see bug 242740).WebView on iOS: Doesn't support multiple modules simultaneously importing a module containing a top-level await (see bug 242740).
api.EXT_frag_depth 📋Safari9/30/2015 Edge9/2/20212164
api.EXT_shader_texture_lod 📋Safari10/16/2014 Edge9/2/20212513
api.EXT_texture_compression_rgtc 📋Firefox1/29/2019 Edge9/2/2021947
Chrome: Only supported on macOS.Edge: Only supported on macOS.Firefox: Only supported on macOS.Opera: Only supported on macOS.
api.Navigator.share 📋Safari3/25/2019 Edge9/2/2021892
Chrome: Only supported on ChromeOS and Windows, see bug 40542648 and bug 40729163.Edge: Only supported on Windows.Opera: Only supported on ChromeOS and Windows, see bug 40542648 and bug 40729163.

2021/8

API First Browser Date Last Browser Date Days Notes
api.VisualViewport 📋Safari9/19/2019 Firefox8/10/2021691
api.VisualViewport.height 📋Safari9/19/2019 Firefox8/10/2021691
api.VisualViewport.offsetLeft 📋Safari9/19/2019 Firefox8/10/2021691
api.VisualViewport.offsetTop 📋Safari9/19/2019 Firefox8/10/2021691
api.VisualViewport.pageLeft 📋Safari9/19/2019 Firefox8/10/2021691
api.VisualViewport.pageTop 📋Safari9/19/2019 Firefox8/10/2021691
api.VisualViewport.resize_event 📋Safari9/19/2019 Firefox8/10/2021691
Chrome: The onresize event handler property is not supported.Chrome Android: The onresize event handler property is not supported.Opera: The onresize event handler property is not supported.Opera Android: The onresize event handler property is not supported.WebView Android: The onresize event handler property is not supported.
api.VisualViewport.scale 📋Safari9/19/2019 Firefox8/10/2021691
api.VisualViewport.scroll_event 📋Safari9/19/2019 Firefox8/10/2021691
Chrome: The onscroll event handler property is not supported.Chrome Android: The onscroll event handler property is not supported.Opera: The onscroll event handler property is not supported.Opera Android: The onscroll event handler property is not supported.WebView Android: The onscroll event handler property is not supported.
api.VisualViewport.width 📋Safari9/19/2019 Firefox8/10/2021691
api.Window.visualViewport 📋Safari9/19/2019 Firefox8/10/2021691
javascript.builtins.Intl.DateTimeFormat.formatRange 📋Edge1/15/2020 Firefox8/10/2021573
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the DateTimeFormat() constructor for more details.
javascript.builtins.Intl.DateTimeFormat.formatRangeToParts 📋Edge1/15/2020 Firefox8/10/2021573
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the DateTimeFormat() constructor for more details.

2021/7

API First Browser Date Last Browser Date Days Notes
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_dayPeriod_parameter Safari4/26/2021 Edge7/22/202187
api.WheelEvent.wheelDelta Safari10/26/2007 Firefox7/13/20215009
api.WheelEvent.wheelDeltaX Safari10/26/2007 Firefox7/13/20215009
api.WheelEvent.wheelDeltaY Safari10/26/2007 Firefox7/13/20215009
javascript.classes.private_class_fields 📋Edge1/15/2020 Firefox7/13/2021545

2021/5

API First Browser Date Last Browser Date Days Notes
api.RTCStatsReport.type_remote-outbound-rtp 📋Firefox2/4/2014 Edge5/27/20212669
api.RTCStatsReport.type_remote-outbound-rtp.kind 📋Firefox10/23/2018 Edge5/27/2021947
api.RTCStatsReport.type_remote-outbound-rtp.ssrc 📋Firefox2/4/2014 Edge5/27/20212669
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.IntlLegacyConstructedSymbol 📋Firefox6/13/2017 Edge5/27/20211444
Chrome: The fallback symbol property has description IntlFallback.Chrome Android: The fallback symbol property has description IntlFallback.Edge: The fallback symbol property has description IntlFallback.Node.js: The fallback symbol property has description IntlFallback.Quest Browser: The fallback symbol property has description IntlFallback.Opera: The fallback symbol property has description IntlFallback.Opera Android: The fallback symbol property has description IntlFallback.Samsung Internet: The fallback symbol property has description IntlFallback.WebView Android: The fallback symbol property has description IntlFallback.
javascript.builtins.Intl.NumberFormat.NumberFormat.IntlLegacyConstructedSymbol 📋Firefox6/13/2017 Edge5/27/20211444
Chrome: The fallback symbol property has description IntlFallback.Chrome Android: The fallback symbol property has description IntlFallback.Edge: The fallback symbol property has description IntlFallback.Node.js: The fallback symbol property has description IntlFallback.Quest Browser: The fallback symbol property has description IntlFallback.Opera: The fallback symbol property has description IntlFallback.Opera Android: The fallback symbol property has description IntlFallback.Samsung Internet: The fallback symbol property has description IntlFallback.WebView Android: The fallback symbol property has description IntlFallback.

2021/4

API First Browser Date Last Browser Date Days Notes
api.AbstractRange 📋Firefox9/3/2019 Safari4/26/2021601
api.AbstractRange.collapsed 📋Firefox9/3/2019 Safari4/26/2021601
api.AbstractRange.endContainer 📋Firefox9/3/2019 Safari4/26/2021601
api.AbstractRange.endOffset 📋Firefox9/3/2019 Safari4/26/2021601
api.AbstractRange.startContainer 📋Firefox9/3/2019 Safari4/26/2021601
api.AbstractRange.startOffset 📋Firefox9/3/2019 Safari4/26/2021601
api.AnalyserNode.AnalyserNode 📋Firefox4/19/2017 Safari4/26/20211468
api.AnalyserNode.getFloatTimeDomainData 📋Firefox6/10/2014 Safari4/26/20212512
api.AudioBuffer.AudioBuffer 📋Firefox4/19/2017 Safari4/26/20211468
Chrome: The context parameter was supported up until version 57, but has now been removed.Chrome Android: The context parameter was supported up until version 57, but has now been removed.Quest Browser: The context parameter was supported up until version 5.0, but has now been removed.Opera: The context parameter was supported up until version 44, but has now been removed.Opera Android: The context parameter was supported up until version 44, but has now been removed.Samsung Internet: The context parameter was supported up until Samsung Internet 7.0, but has now been removed.WebView Android: The context parameter was supported up until version 57, but has now been removed.
api.AudioBuffer.copyFromChannel 📋Firefox2/4/2014 Safari4/26/20212638
api.AudioBuffer.copyToChannel 📋Firefox2/4/2014 Safari4/26/20212638
api.AudioBufferSourceNode.AudioBufferSourceNode 📋Firefox4/19/2017 Safari4/26/20211468
api.AudioBufferSourceNode.detune 📋Firefox8/11/2015 Safari4/26/20212085
api.AudioContext 📋Firefox10/29/2013 Safari4/26/20212736
api.AudioContext.AudioContext 📋Firefox10/29/2013 Safari4/26/20212736
Chrome: Before Chrome 66, each tab is limited to 6 audio contexts in Chrome; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in Chrome.Chrome: If latencyHint isn't valid, Chrome throws a TypeError exception. See Non-standard exceptions in Chrome for details.Chrome Android: Before Chrome Android 66, each tab is limited to 6 audio contexts in Chrome Android; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in Chrome Android.Chrome Android: If latencyHint isn't valid, Chrome Android throws a TypeError exception. See Non-standard exceptions in Chrome Android for details.Quest Browser: Before Quest Browser 5.0, each tab is limited to 6 audio contexts in Quest Browser; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in Quest Browser.Quest Browser: If latencyHint isn't valid, Quest Browser throws a TypeError exception. See Non-standard exceptions in Quest Browser for details.Opera: Before Opera 53, each tab is limited to 6 audio contexts in Opera; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in Chrome.Opera: If latencyHint isn't valid, Opera throws a TypeError exception. See Non-standard exceptions in Chrome for details.Opera Android: Before Opera Android 47, each tab is limited to 6 audio contexts in Opera; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in Chrome.Opera Android: If latencyHint isn't valid, Opera throws a TypeError exception. See Non-standard exceptions in Chrome for details.Safari: New audio contexts are suspended until the resume() method is called via user action, such as the click event.Safari on iOS: New audio contexts are suspended until the resume() method is called via user action, such as the click event.Samsung Internet: Before Samsung Internet 9.0, each tab is limited to 6 audio contexts in Samsung Internet; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in Chrome.Samsung Internet: If latencyHint isn't valid, Samsung Internet throws a TypeError exception. See Non-standard exceptions in Chrome for details.WebView Android: Before WebView Android 66, each tab is limited to 6 audio contexts in WebView Android; attempting to create more will throw a DOMException. For details see Per-tab audio context limitation in WebView Android.WebView Android: If latencyHint isn't valid, WebView Android throws a TypeError exception. See Non-standard exceptions in WebView Android for details.WebView on iOS: New audio contexts are suspended until the resume() method is called via user action, such as the click event.
api.AudioContext.AudioContext.options_sampleRate_parameter 📋Firefox6/26/2018 Safari4/26/20211035
api.AudioContext.baseLatency 📋Firefox10/22/2019 Safari4/26/2021552
api.AudioContext.getOutputTimestamp 📋Firefox10/22/2019 Safari4/26/2021552
api.AudioDestinationNode.maxChannelCount 📋Firefox10/29/2013 Safari4/26/20212736
Safari: This property always returns 0.Safari on iOS: This property always returns 0.WebView on iOS: This property always returns 0.
api.AudioParamMap 📋Edge1/15/2020 Safari4/26/2021467
api.AudioParamMap.@@iterator Edge1/15/2020 Safari4/26/2021467
api.AudioParamMap.entries Edge1/15/2020 Safari4/26/2021467
api.AudioParamMap.forEach Edge1/15/2020 Safari4/26/2021467
api.AudioParamMap.get Edge1/15/2020 Safari4/26/2021467
api.AudioParamMap.has Edge1/15/2020 Safari4/26/2021467
api.AudioParamMap.keys Edge1/15/2020 Safari4/26/2021467
api.AudioParamMap.size Edge1/15/2020 Safari4/26/2021467
api.AudioParamMap.values Edge1/15/2020 Safari4/26/2021467
api.AudioWorklet 📋Edge1/15/2020 Safari4/26/2021467
api.AudioWorkletGlobalScope 📋Edge1/15/2020 Safari4/26/2021467
api.AudioWorkletGlobalScope.currentFrame 📋Edge1/15/2020 Safari4/26/2021467
api.AudioWorkletGlobalScope.currentTime 📋Edge1/15/2020 Safari4/26/2021467
api.AudioWorkletGlobalScope.registerProcessor 📋Edge1/15/2020 Safari4/26/2021467
api.AudioWorkletGlobalScope.sampleRate 📋Edge1/15/2020 Safari4/26/2021467
api.AudioWorkletNode 📋Edge1/15/2020 Safari4/26/2021467
api.AudioWorkletNode.AudioWorkletNode 📋Edge1/15/2020 Safari4/26/2021467
api.AudioWorkletNode.parameters 📋Edge1/15/2020 Safari4/26/2021467
api.AudioWorkletNode.port 📋Edge1/15/2020 Safari4/26/2021467
api.AudioWorkletNode.processorerror_event 📋Edge1/15/2020 Safari4/26/2021467
api.AudioWorkletProcessor 📋Edge1/15/2020 Safari4/26/2021467
api.AudioWorkletProcessor.AudioWorkletProcessor 📋Edge1/15/2020 Safari4/26/2021467
api.AudioWorkletProcessor.port 📋Edge1/15/2020 Safari4/26/2021467
api.BaseAudioContext 📋Firefox4/19/2017 Safari4/26/20211468
Chrome: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Chrome Android: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Edge: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Firefox: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Firefox for Android: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Opera: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Opera Android: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Safari: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Safari on iOS: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.Samsung Internet: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.WebView Android: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.WebView on iOS: The BaseAudioContext interface itself is not present, but many of the methods are available on the AudioContext and OfflineAudioContext interfaces.
api.BaseAudioContext.audioWorklet 📋Edge1/15/2020 Safari4/26/2021467
api.BaseAudioContext.createConstantSource 📋Firefox3/7/2017 Safari4/26/20211511
api.BaseAudioContext.createIIRFilter 📋Edge8/2/2016 Safari4/26/20211728
api.BaseAudioContext.createPeriodicWave.constraints_disableNormalization_parameter Edge7/29/2015 Safari4/26/20212098
api.BaseAudioContext.createStereoPanner 📋Firefox3/31/2015 Safari4/26/20212218
api.BaseAudioContext.decodeAudioData.returns_promise Firefox2/24/2015 Safari4/26/20212253
api.BiquadFilterNode.BiquadFilterNode 📋Firefox4/19/2017 Safari4/26/20211468
api.Blob.stream 📋Firefox9/3/2019 Safari4/26/2021601
api.CSSConditionRule 📋Firefox4/2/2013 Safari4/26/20212946
api.CSSConditionRule.conditionText 📋Firefox4/2/2013 Safari4/26/20212946
api.CSSGroupingRule 📋Firefox4/2/2013 Safari4/26/20212946
Safari: The CSSGroupingRule interface itself is not present, but many of the methods are available on various interfaces such as the CSSMediaRule and CSSPageRule interfaces.Safari on iOS: The CSSGroupingRule interface itself is not present, but many of the methods are available on various interfaces such as the CSSMediaRule and CSSPageRule interfaces.WebView on iOS: The CSSGroupingRule interface itself is not present, but many of the methods are available on various interfaces such as the CSSMediaRule and CSSPageRule interfaces.
api.ChannelMergerNode.ChannelMergerNode 📋Firefox4/19/2017 Safari4/26/20211468
api.ChannelSplitterNode.ChannelSplitterNode 📋Firefox4/19/2017 Safari4/26/20211468
api.ConstantSourceNode 📋Firefox3/7/2017 Safari4/26/20211511
api.ConstantSourceNode.ConstantSourceNode 📋Firefox3/7/2017 Safari4/26/20211511
api.ConstantSourceNode.offset 📋Firefox3/7/2017 Safari4/26/20211511
api.ConvolverNode.ConvolverNode 📋Firefox4/19/2017 Safari4/26/20211468
api.DataTransfer.DataTransfer 📋Edge4/30/2018 Safari4/26/20211092
api.DelayNode.DelayNode 📋Firefox4/19/2017 Safari4/26/20211468
api.Document.visibilitychange_event 📋Firefox9/28/2017 Safari4/26/20211306
Chrome: The onvisibilitychange event handler property is not supported.Chrome: The onvisibilitychange event handler property is not supported.Chrome Android: The onvisibilitychange event handler property is not supported.Chrome Android: The onvisibilitychange event handler property is not supported.Edge: The onvisibilitychange event handler property is not supported.Internet Explorer: The onvisibilitychange event handler property is not supported.Quest Browser: The onvisibilitychange event handler property is not supported.Opera: The onvisibilitychange event handler property is not supported.Opera: The onvisibilitychange event handler property is not supported.Opera: The onvisibilitychange event handler property is not supported.Opera Android: The onvisibilitychange event handler property is not supported.Opera Android: The onvisibilitychange event handler property is not supported.Opera Android: The onvisibilitychange event handler property is not supported.Safari: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.Safari: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.Safari: Before Safari 14, the event does not bubble, so document.addEventListener('visibilitychange', ...) works, but window.addEventListener('visibilitychange', ...) does not.Safari: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.Safari: Before Safari 14, the event does not bubble, so document.addEventListener('visibilitychange', ...) works, but window.addEventListener('visibilitychange', ...) does not.Safari: The onvisibilitychange event handler property is not supported.Safari on iOS: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.Safari on iOS: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.Safari on iOS: Before Safari on iOS 14, the event does not bubble, so document.addEventListener('visibilitychange', ...) works, but window.addEventListener('visibilitychange', ...) does not.Safari on iOS: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.Safari on iOS: Before Safari on iOS 14, the event does not bubble, so document.addEventListener('visibilitychange', ...) works, but window.addEventListener('visibilitychange', ...) does not.Safari on iOS: The onvisibilitychange event handler property is not supported.Samsung Internet: The onvisibilitychange event handler property is not supported.Samsung Internet: The onvisibilitychange event handler property is not supported.WebView Android: The onvisibilitychange event handler property is not supported.WebView Android: The onvisibilitychange event handler property is not supported.WebView on iOS: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.WebView on iOS: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.WebView on iOS: Before WebView on iOS 14, the event does not bubble, so document.addEventListener('visibilitychange', ...) works, but window.addEventListener('visibilitychange', ...) does not.WebView on iOS: Doesn't fire the visibilitychange event when navigating away from a document, so also include code to check for the pagehide event (which does fire for that case in all current browsers). See bug 116769, bug 151234, bug 151610, and bug 194897.WebView on iOS: Before WebView on iOS 14, the event does not bubble, so document.addEventListener('visibilitychange', ...) works, but window.addEventListener('visibilitychange', ...) does not.WebView on iOS: The onvisibilitychange event handler property is not supported.
api.DynamicsCompressorNode.DynamicsCompressorNode 📋Firefox4/19/2017 Safari4/26/20211468
api.EXT_float_blend 📋Firefox5/21/2019 Safari4/26/2021706
Chrome Android: Until Chrome 77, this extension was unavailable on several Android devices powered by GLES 3.2. See bug 41459397.Quest Browser: Until Chrome 77, this extension was unavailable on several Android devices powered by GLES 3.2. See bug 41459397.
api.GainNode.GainNode 📋Firefox4/19/2017 Safari4/26/20211468
api.HTMLAreaElement.referrerPolicy 📋Firefox11/15/2016 Safari4/26/20211623
api.HTMLLinkElement.referrerPolicy 📋Firefox11/15/2016 Safari4/26/20211623
api.IIRFilterNode 📋Edge8/2/2016 Safari4/26/20211728
api.IIRFilterNode.IIRFilterNode 📋Firefox4/19/2017 Safari4/26/20211468
api.IIRFilterNode.getFrequencyResponse 📋Edge8/2/2016 Safari4/26/20211728
api.MediaElementAudioSourceNode.MediaElementAudioSourceNode 📋Firefox4/19/2017 Safari4/26/20211468
api.MediaRecorder 📋Firefox10/29/2013 Safari4/26/20212736
Firefox: Before Firefox 58, using MediaStream.addTrack() on a stream obtained using getUserMedia(), then attempting to record the resulting stream would result in only recording the original stream without the added tracks (severe bug).Firefox for Android: Before Firefox for Android 58, using MediaStream.addTrack() on a stream obtained using getUserMedia(), then attempting to record the resulting stream would result in only recording the original stream without the added tracks (severe bug).
api.MediaRecorder.MediaRecorder 📋Firefox10/29/2013 Safari4/26/20212736
api.MediaRecorder.MediaRecorder.options_parameter Firefox12/15/2015 Safari4/26/20211959
api.MediaRecorder.audioBitsPerSecond 📋Firefox12/10/2019 Safari4/26/2021503
api.MediaRecorder.dataavailable_event 📋Firefox10/29/2013 Safari4/26/20212736
api.MediaRecorder.error_event 📋Firefox10/29/2013 Safari4/26/20212736
Chrome: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.Chrome Android: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.Edge: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.Quest Browser: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.Opera: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.Opera Android: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.Samsung Internet: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.WebView Android: The interface for this event is a plain Event, not ErrorEvent. See bug 40791876.
api.MediaRecorder.isTypeSupported_static 📋Firefox10/29/2013 Safari4/26/20212736
api.MediaRecorder.mimeType 📋Firefox10/29/2013 Safari4/26/20212736
Chrome: Before Chrome 49, only video is supported, not audio.Chrome Android: Before Chrome Android 49, only video is supported, not audio.Firefox: Starting with Firefox 71, the behavior of mimeType is more consistent. For example, it now returns the media type even after recording has stopped.WebView Android: Before WebView Android 49, only video is supported, not audio.
api.MediaRecorder.pause 📋Firefox10/29/2013 Safari4/26/20212736
api.MediaRecorder.pause_event 📋Firefox1/29/2019 Safari4/26/2021818
api.MediaRecorder.requestData 📋Firefox10/29/2013 Safari4/26/20212736
api.MediaRecorder.resume 📋Firefox10/29/2013 Safari4/26/20212736
api.MediaRecorder.resume_event 📋Firefox1/29/2019 Safari4/26/2021818
api.MediaRecorder.start 📋Firefox10/29/2013 Safari4/26/20212736
api.MediaRecorder.start_event 📋Firefox10/29/2013 Safari4/26/20212736
api.MediaRecorder.state 📋Firefox10/29/2013 Safari4/26/20212736
Chrome: Before Chrome 49, only video is supported, not audio.Chrome Android: Before Chrome Android 49, only video is supported, not audio.WebView Android: Before WebView Android 49, only video is supported, not audio.
api.MediaRecorder.stop 📋Firefox10/29/2013 Safari4/26/20212736
api.MediaRecorder.stop_event 📋Firefox10/29/2013 Safari4/26/20212736
api.MediaRecorder.stream 📋Firefox10/29/2013 Safari4/26/20212736
Chrome: Before Chrome 49, only video is supported, not audio.Chrome Android: Before Chrome Android 49, only video is supported, not audio.
api.MediaRecorder.videoBitsPerSecond 📋Firefox12/10/2019 Safari4/26/2021503
api.MediaStreamAudioDestinationNode.MediaStreamAudioDestinationNode 📋Firefox4/19/2017 Safari4/26/20211468
api.MediaStreamAudioSourceNode.MediaStreamAudioSourceNode 📋Firefox4/19/2017 Safari4/26/20211468
api.OES_fbo_render_mipmap 📋Firefox12/10/2019 Safari4/26/2021503
api.OfflineAudioContext 📋Firefox10/29/2013 Safari4/26/20212736
api.OfflineAudioContext.OfflineAudioContext 📋Firefox10/29/2013 Safari4/26/20212736
api.OfflineAudioContext.OfflineAudioContext.options_parameter Firefox11/14/2017 Safari4/26/20211259
api.OfflineAudioContext.length 📋Edge8/2/2016 Safari4/26/20211728
api.OfflineAudioContext.startRendering.returns_promise Firefox3/31/2015 Safari4/26/20212218
api.OscillatorNode.OscillatorNode 📋Firefox4/19/2017 Safari4/26/20211468
api.PannerNode.PannerNode 📋Firefox4/19/2017 Safari4/26/20211468
api.PannerNode.orientationX 📋Firefox11/15/2016 Safari4/26/20211623
api.PannerNode.orientationY 📋Firefox11/15/2016 Safari4/26/20211623
api.PannerNode.orientationZ 📋Firefox11/15/2016 Safari4/26/20211623
api.PannerNode.positionX 📋Firefox11/15/2016 Safari4/26/20211623
api.PannerNode.positionY 📋Firefox11/15/2016 Safari4/26/20211623
api.PannerNode.positionZ 📋Firefox11/15/2016 Safari4/26/20211623
api.Performance.toJSON 📋Firefox10/29/2013 Safari4/26/20212736
api.PerformanceNavigation.toJSON 📋Firefox10/29/2013 Safari4/26/20212736
Firefox: Before Firefox 70, this property could return incorrect values. See bug 1459711.Firefox for Android: Before Firefox for Android 79, this property could return incorrect values. See bug 1459711.
api.PerformancePaintTiming 📋Edge1/15/2020 Safari4/26/2021467
api.PerformancePaintTiming.first-contentful-paint 📋Edge1/15/2020 Safari4/26/2021467
api.PerformancePaintTiming.toJSON 📋Edge1/15/2020 Safari4/26/2021467
api.PeriodicWave.PeriodicWave 📋Firefox4/19/2017 Safari4/26/20211468
api.RTCIceCandidate.usernameFragment 📋Firefox5/21/2019 Safari4/26/2021706
Firefox: Before Firefox 126, the property was not read-only.Firefox for Android: Before Firefox for Android 126, the property was not read-only.
api.RTCPeerConnection.restartIce 📋Firefox10/22/2019 Safari4/26/2021552
api.RTCPeerConnection.setLocalDescription.description_parameter_optional Edge2/7/2020 Safari4/26/2021444
api.RTCStatsReport.type_remote-inbound-rtp.id 📋Firefox1/7/2020 Safari4/26/2021475
api.RTCStatsReport.type_remote-inbound-rtp.localId 📋Firefox1/7/2020 Safari4/26/2021475
api.RTCStatsReport.type_remote-inbound-rtp.timestamp 📋Firefox1/7/2020 Safari4/26/2021475
api.RTCStatsReport.type_remote-inbound-rtp.type 📋Firefox1/7/2020 Safari4/26/2021475
api.Request.formData 📋Firefox7/2/2015 Safari4/26/20212125
Safari: The method exists but always rejects with NotSupportedError. See bug 215671.Safari on iOS: The method exists but always rejects with NotSupportedError. See bug 215671.WebView on iOS: The method exists but always rejects with NotSupportedError. See bug 215671.
api.Response.formData 📋Firefox7/2/2015 Safari4/26/20212125
Safari: The method exists but always rejects with NotSupportedError. See bug 215671.Safari on iOS: The method exists but always rejects with NotSupportedError. See bug 215671.WebView on iOS: The method exists but always rejects with NotSupportedError. See bug 215671.
api.StereoPannerNode 📋Firefox3/31/2015 Safari4/26/20212218
api.StereoPannerNode.StereoPannerNode 📋Firefox4/19/2017 Safari4/26/20211468
api.StereoPannerNode.pan 📋Firefox3/31/2015 Safari4/26/20212218
api.TextEncoder.encodeInto 📋Firefox3/19/2019 Safari4/26/2021769
api.URL.URL 📋Firefox12/10/2013 Safari4/26/20212694
Edge: Before Edge 79, query arguments in the base URL argument are removed when calling the URL constructor.Firefox: Before version 122, host, hostname, and port were not parsed for unknown protocols/schemes.Firefox for Android: Before version 122, host, hostname, and port were not parsed for unknown protocols/schemes.Safari: Before Safari 14.1, calling the URL constructor with a base URL whose value is undefined caused Safari to throw a TypeError, see bug 216841.Safari on iOS: Before Safari on iOS 14.1, calling the URL constructor with a base URL whose value is undefined caused Safari on iOS to throw a TypeError, see bug 216841.WebView on iOS: Before WebView on iOS 14.1, calling the URL constructor with a base URL whose value is undefined caused WebView on iOS to throw a TypeError, see bug 216841.
api.WEBGL_compressed_texture_s3tc_srgb 📋Firefox8/8/2017 Safari4/26/20211357
api.WaveShaperNode.WaveShaperNode 📋Firefox4/19/2017 Safari4/26/20211468
api.Worklet 📋Edge1/15/2020 Safari4/26/2021467
api.Worklet.addModule 📋Edge1/15/2020 Safari4/26/2021467
api.WorkletGlobalScope 📋Edge1/15/2020 Safari4/26/2021467
javascript.builtins.FinalizationRegistry 📋Edge7/16/2020 Safari4/26/2021284
javascript.builtins.FinalizationRegistry.FinalizationRegistry 📋Edge7/16/2020 Safari4/26/2021284
javascript.builtins.FinalizationRegistry.register 📋Edge7/16/2020 Safari4/26/2021284
javascript.builtins.FinalizationRegistry.unregister 📋Edge7/16/2020 Safari4/26/2021284
javascript.builtins.Intl.Collator.Collator.options_collation_parameter Edge10/9/2020 Safari4/26/2021199
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_calendar_parameter Edge2/7/2020 Safari4/26/2021444
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_dateStyle_parameter Edge1/15/2020 Safari4/26/2021467
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_fractionalSecondDigits_parameter Edge7/16/2020 Safari4/26/2021284
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_numberingSystem_parameter Edge2/7/2020 Safari4/26/2021444
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeStyle_parameter Edge1/15/2020 Safari4/26/2021467
javascript.builtins.Intl.DisplayNames 📋Edge4/13/2020 Safari4/26/2021378
javascript.builtins.Intl.DisplayNames.DisplayNames 📋Edge4/13/2020 Safari4/26/2021378
javascript.builtins.Intl.DisplayNames.of 📋Edge4/13/2020 Safari4/26/2021378
javascript.builtins.Intl.DisplayNames.resolvedOptions 📋Edge4/13/2020 Safari4/26/2021378
javascript.builtins.Intl.DisplayNames.supportedLocalesOf 📋Edge4/13/2020 Safari4/26/2021378
javascript.builtins.Intl.ListFormat 📋Edge1/15/2020 Safari4/26/2021467
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the ListFormat() constructor for more details.Safari: Only available on macOS Big Sur (11) and above.
javascript.builtins.Intl.ListFormat.ListFormat 📋Edge1/15/2020 Safari4/26/2021467
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the ListFormat instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.Safari: Only available on macOS Big Sur (11) and above.
javascript.builtins.Intl.ListFormat.format 📋Edge1/15/2020 Safari4/26/2021467
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the ListFormat() constructor for more details.Safari: Only available on macOS Big Sur (11) and above.
javascript.builtins.Intl.ListFormat.formatToParts 📋Edge1/15/2020 Safari4/26/2021467
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the ListFormat() constructor for more details.Safari: Only available on macOS Big Sur (11) and above.
javascript.builtins.Intl.ListFormat.resolvedOptions 📋Edge1/15/2020 Safari4/26/2021467
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the ListFormat() constructor for more details.Safari: Only available on macOS Big Sur (11) and above.
javascript.builtins.Intl.ListFormat.supportedLocalesOf 📋Edge1/15/2020 Safari4/26/2021467
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.Safari: Only available on macOS Big Sur (11) and above.
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_compactDisplay_parameter Edge1/15/2020 Safari4/26/2021467
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_currencyDisplay_parameter Firefox11/3/2015 Safari4/26/20212001
Safari: Doesn't support currencyDisplay: 'narrowSymbol'.Safari on iOS: Doesn't support currencyDisplay: 'narrowSymbol'.WebView on iOS: Doesn't support currencyDisplay: 'narrowSymbol'.
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_currencySign_parameter Edge1/15/2020 Safari4/26/2021467
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_notation_parameter Edge1/15/2020 Safari4/26/2021467
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_numberingSystem_parameter Edge7/29/2015 Safari4/26/20212098
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_signDisplay_parameter Edge1/15/2020 Safari4/26/2021467
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_unitDisplay_parameter Edge1/15/2020 Safari4/26/2021467
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_unit_parameter Edge1/15/2020 Safari4/26/2021467
javascript.builtins.WeakRef 📋Edge7/16/2020 Safari4/26/2021284
javascript.builtins.WeakRef.WeakRef 📋Edge7/16/2020 Safari4/26/2021284
javascript.builtins.WeakRef.deref 📋Edge7/16/2020 Safari4/26/2021284
javascript.classes.static.class_fields 📋Edge1/15/2020 Safari4/26/2021467
javascript.statements.export.arbitrary_module_namespace_identifier_names Edge1/21/2021 Safari4/26/202195
javascript.statements.export.namespace 📋Edge1/15/2020 Safari4/26/2021467
Node.js: Modules must either have a filename ending in .mjs, or the nearest parent package.json file must contain "type": "module". See Node's ECMAScript Modules documentation for more details.
javascript.statements.import.arbitrary_module_namespace_identifier_names Edge1/21/2021 Safari4/26/202195
api.StaticRange.StaticRange 📋Firefox12/10/2019 Edge4/15/2021492

2021/3

API First Browser Date Last Browser Date Days Notes
api.Element.beforeinput_event 📋Safari3/27/2017 Firefox3/23/20211457
api.InputEvent.getTargetRanges 📋Safari3/27/2017 Firefox3/23/20211457
api.MediaSource.sourceclose_event 📋Safari3/27/2017 Firefox3/23/20211457
Chrome: The onsourceclose event handler property is not supported.Chrome Android: The onsourceclose event handler property is not supported.Edge: The onsourceclose event handler property is not supported.Firefox: The onsourceclose event handler property is not supported.Firefox for Android: The onsourceclose event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onsourceclose event handler property is not supported.Opera Android: The onsourceclose event handler property is not supported.Safari: The onsourceclose event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onsourceclose event handler property is not supported.WebView Android: The onsourceclose event handler property is not supported.

2021/1

API First Browser Date Last Browser Date Days Notes
api.RTCRtpTransceiver.stop 📋Safari9/19/2017 Edge1/21/20211220

2020/11

API First Browser Date Last Browser Date Days Notes
api.Element.transitioncancel_event 📋Firefox4/19/2017 Edge11/19/20201310
Chrome: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.Chrome Android: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.Edge: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.Quest Browser: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.Opera: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.Opera Android: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.Safari: Although the ontransitioncancel event handler property is supported, the transitioncancel event is never fired.Safari on iOS: Although the ontransitioncancel event handler property is supported, the transitioncancel event is never fired.Samsung Internet: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.WebView Android: The ontransitioncancel event handler property is not supported. To listen to this event, use element.addEventListener('transitioncancel', function() {});.WebView on iOS: Although the ontransitioncancel event handler property is supported, the transitioncancel event is never fired.

2020/10

API First Browser Date Last Browser Date Days Notes
api.MediaMetadata 📋Edge1/15/2020 Firefox10/20/2020279
Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface.
api.MediaMetadata.MediaMetadata 📋Edge1/15/2020 Firefox10/20/2020279
api.MediaMetadata.album 📋Edge1/15/2020 Firefox10/20/2020279
api.MediaMetadata.artist 📋Edge1/15/2020 Firefox10/20/2020279
api.MediaMetadata.artwork 📋Edge1/15/2020 Firefox10/20/2020279
api.MediaMetadata.title 📋Edge1/15/2020 Firefox10/20/2020279
api.Document.replaceChildren 📋Firefox6/30/2020 Edge10/9/2020101
api.DocumentFragment.replaceChildren 📋Firefox6/30/2020 Edge10/9/2020101
api.Element.replaceChildren 📋Firefox6/30/2020 Edge10/9/2020101
api.Element.scrollLeft 📋Safari6/23/2003 Edge10/9/20206318
Chrome: For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 41319147.Chrome Android: For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 41319147.Edge: For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 41319147.Internet Explorer: For right-to-left elements, this property uses 100-0 (most left to most right) instead of negative values.Quest Browser: For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 41319147.Samsung Internet: For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 41319147.WebView Android: For right-to-left elements, this property uses 0-100 (most left to most right) instead of negative values. See bug 41319147.

2020/9

API First Browser Date Last Browser Date Days Notes
api.AudioScheduledSourceNode 📋Firefox4/19/2017 Safari9/16/20201246
Chrome: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Chrome Android: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Edge: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Firefox: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Firefox for Android: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Opera: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Opera Android: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Safari: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Safari on iOS: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.Samsung Internet: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.WebView Android: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.WebView on iOS: The AudioScheduledSourceNode interface itself is not present, but some of its members are available on the AudioBufferSourceNode, ConstantSourceNode and OscillatorNode interfaces.
api.Blob.arrayBuffer 📋Firefox9/3/2019 Safari9/16/2020379
api.Blob.text 📋Firefox9/3/2019 Safari9/16/2020379
api.BlobEvent 📋Firefox5/14/2013 Safari9/16/20202682
api.BlobEvent.BlobEvent 📋Firefox5/14/2013 Safari9/16/20202682
api.BlobEvent.data 📋Firefox5/14/2013 Safari9/16/20202682
api.Document.getAnimations 📋Firefox4/7/2020 Safari9/16/2020162
Safari: Implements an older version of the specification, see bug 179536.Safari on iOS: Implements an older version of the specification, see bug 179536.WebView on iOS: Implements an older version of the specification, see bug 179536.
api.DragEvent 📋Firefox6/30/2009 Safari9/16/20204096
Internet Explorer: Before Internet Explorer 10, DragEvent is exposed in standards mode but not quirks mode.
api.DragEvent.DragEvent 📋Firefox6/30/2009 Safari9/16/20204096
api.DragEvent.dataTransfer 📋Firefox6/30/2009 Safari9/16/20204096
Internet Explorer: The value is always null.
api.EXT_color_buffer_half_float 📋Firefox6/7/2016 Safari9/16/20201562
Firefox: Not supported on Windows.
api.Element.animate.options_pseudoElement_parameter 📋Firefox4/7/2020 Safari9/16/2020162
api.Element.scroll.options_behavior_parameter Firefox2/24/2015 Safari9/16/20202031
api.Element.scrollBy.options_behavior_parameter Firefox2/24/2015 Safari9/16/20202031
api.Element.scrollIntoView.options_parameter 📋Firefox2/24/2015 Safari9/16/20202031
api.Element.scrollIntoView.options_parameter.block_option 📋Firefox1/23/2018 Safari9/16/2020967
Firefox: Only values "top" and "bottom", not "nearest" and "center".Firefox for Android: Only values "top" and "bottom", not "nearest" and "center".
api.Element.scrollIntoView.options_parameter.inline_option 📋Firefox1/23/2018 Safari9/16/2020967
api.Element.scrollTo.options_behavior_parameter Firefox2/24/2015 Safari9/16/20202031
api.EventTarget.EventTarget 📋Firefox3/13/2018 Safari9/16/2020918
api.HTMLAnchorElement.referrerPolicy 📋Firefox11/15/2016 Safari9/16/20201401
api.HTMLIFrameElement.referrerPolicy 📋Firefox11/15/2016 Safari9/16/20201401
api.HTMLImageElement.referrerPolicy 📋Firefox11/15/2016 Safari9/16/20201401
api.HTMLScriptElement.referrerPolicy 📋Firefox1/29/2019 Safari9/16/2020596
api.IntersectionObserver.IntersectionObserver.options_root_parameter_Document Edge4/13/2020 Safari9/16/2020156
api.KeyframeEffect.pseudoElement 📋Firefox4/7/2020 Safari9/16/2020162
api.MediaQueryList.EventTarget_inheritance Firefox8/8/2017 Safari9/16/20201135
api.MediaQueryList.change_event 📋Firefox8/8/2017 Safari9/16/20201135
api.MediaQueryListEvent 📋Firefox8/8/2017 Safari9/16/20201135
api.MediaQueryListEvent.MediaQueryListEvent 📋Firefox8/8/2017 Safari9/16/20201135
api.MediaQueryListEvent.matches 📋Firefox8/8/2017 Safari9/16/20201135
api.MediaQueryListEvent.media 📋Firefox8/8/2017 Safari9/16/20201135
api.Navigator.share.data_text_parameter 📋Firefox12/10/2019 Safari9/16/2020281
api.OfflineAudioCompletionEvent.OfflineAudioCompletionEvent 📋Firefox4/19/2017 Safari9/16/20201246
api.RTCStatsReport.type_inbound-rtp.kind 📋Firefox10/23/2018 Safari9/16/2020694
api.RTCStatsReport.type_outbound-rtp.kind 📋Firefox10/23/2018 Safari9/16/2020694
api.RTCStatsReport.type_remote-inbound-rtp.kind 📋Firefox10/23/2018 Safari9/16/2020694
api.ShadowRoot.getAnimations 📋Firefox4/7/2020 Safari9/16/2020162
api.URLSearchParams.delete 📋Firefox4/29/2014 Safari9/16/20202332
Safari: Removing a non-existent query parameter doesn't remove ? from the URL. See bug 193022.Safari on iOS: Removing a non-existent query parameter doesn't remove ? from the URL. See bug 193022.WebView on iOS: Removing a non-existent query parameter doesn't remove ? from the URL. See bug 193022.
api.WEBGL_color_buffer_float 📋Firefox6/10/2014 Safari9/16/20202290
api.WEBGL_debug_shaders 📋Firefox9/28/2017 Safari9/16/20201084
api.WEBGL_debug_shaders.getTranslatedShaderSource 📋Firefox9/28/2017 Safari9/16/20201084
api.Window.scroll.options_behavior_parameter Firefox2/24/2015 Safari9/16/20202031
Safari: Safari does not have support for the smooth scroll behavior.Safari on iOS: Safari on iOS does not have support for the smooth scroll behavior.WebView on iOS: WebView on iOS does not have support for the smooth scroll behavior.
api.Window.scrollBy.options_behavior_parameter Firefox2/24/2015 Safari9/16/20202031
Safari: Safari does not have support for the smooth scroll behavior.Safari on iOS: Safari on iOS does not have support for the smooth scroll behavior.WebView on iOS: WebView on iOS does not have support for the smooth scroll behavior.
api.Window.scrollTo.options_behavior_parameter Firefox2/24/2015 Safari9/16/20202031
Safari: Before version 15.4, Safari did not have support for the smooth scroll behavior.Safari on iOS: Before version 15.4, Safari on iOS did not have support for the smooth scroll behavior.WebView on iOS: Before version 15.4, WebView on iOS did not have support for the smooth scroll behavior.
javascript.builtins.AggregateError 📋Firefox7/28/2020 Safari9/16/202050
javascript.builtins.AggregateError.AggregateError 📋Firefox7/28/2020 Safari9/16/202050
javascript.builtins.AggregateError.errors 📋Firefox7/28/2020 Safari9/16/202050
javascript.builtins.BigInt 📋Firefox7/9/2019 Safari9/16/2020435
javascript.builtins.BigInt.BigInt 📋Firefox7/9/2019 Safari9/16/2020435
javascript.builtins.BigInt.asIntN 📋Firefox7/9/2019 Safari9/16/2020435
javascript.builtins.BigInt.asUintN 📋Firefox7/9/2019 Safari9/16/2020435
javascript.builtins.BigInt.toLocaleString 📋Firefox7/9/2019 Safari9/16/2020435
javascript.builtins.BigInt.toLocaleString.locales_parameter Firefox10/22/2019 Safari9/16/2020330
Deno: Only the locale data for en-US is available.
javascript.builtins.BigInt.toLocaleString.options_parameter Firefox10/22/2019 Safari9/16/2020330
javascript.builtins.BigInt.toString 📋Firefox7/9/2019 Safari9/16/2020435
javascript.builtins.BigInt.valueOf 📋Firefox7/9/2019 Safari9/16/2020435
javascript.builtins.Intl.Locale 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.Locale 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.baseName 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.calendar 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.caseFirst 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.collation 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.hourCycle 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.language 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.maximize 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.minimize 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.numberingSystem 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.numeric 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.region 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.script 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.Locale.toString 📋Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.RelativeTimeFormat 📋Firefox1/29/2019 Safari9/16/2020596
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the RelativeTimeFormat() constructor for more details.
javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat 📋Firefox1/29/2019 Safari9/16/2020596
javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat.locales_parameter Firefox1/29/2019 Safari9/16/2020596
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the RelativeTimeFormat instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat.options_parameter.options_localeMatcher_parameter Firefox1/29/2019 Safari9/16/2020596
javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat.options_parameter.options_numberingSystem_parameter Edge1/15/2020 Safari9/16/2020245
javascript.builtins.Intl.RelativeTimeFormat.RelativeTimeFormat.options_parameter.options_numeric_parameter Firefox1/29/2019 Safari9/16/2020596
javascript.builtins.Intl.RelativeTimeFormat.format 📋Firefox1/29/2019 Safari9/16/2020596
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the RelativeTimeFormat() constructor for more details.
javascript.builtins.Intl.RelativeTimeFormat.formatToParts 📋Firefox10/22/2019 Safari9/16/2020330
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the RelativeTimeFormat() constructor for more details.
javascript.builtins.Intl.RelativeTimeFormat.resolvedOptions 📋Firefox1/29/2019 Safari9/16/2020596
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the RelativeTimeFormat() constructor for more details.
javascript.builtins.Intl.RelativeTimeFormat.supportedLocalesOf 📋Firefox1/29/2019 Safari9/16/2020596
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Promise.any 📋Firefox7/28/2020 Safari9/16/202050
javascript.builtins.Symbol.toStringTag.dom_objects Edge1/15/2020 Safari9/16/2020245
javascript.operators.logical_and_assignment 📋Firefox7/28/2020 Safari9/16/202050
javascript.operators.logical_or_assignment 📋Firefox7/28/2020 Safari9/16/202050
javascript.operators.nullish_coalescing_assignment 📋Firefox7/28/2020 Safari9/16/202050

2020/8

API First Browser Date Last Browser Date Days Notes
api.Document.hasStorageAccess 📋Safari4/12/2018 Edge8/27/2020868
api.Document.requestStorageAccess 📋Safari4/12/2018 Edge8/27/2020868
Safari: Client-side storage access is granted per-page (see explanation).Safari on iOS: Client-side storage access is granted per-page (see explanation).WebView on iOS: Client-side storage access is granted per-page (see explanation).
javascript.builtins.String.replaceAll 📋Safari3/24/2020 Edge8/27/2020156

2020/7

API First Browser Date Last Browser Date Days Notes
api.CanvasPattern.setTransform.dommatrix Safari4/12/2018 Firefox7/28/2020838
api.FileReader.loadstart_event 📋Safari7/25/2012 Firefox7/28/20202925
Firefox: loadstart event dispatches synchronously (should be asynchronously as per spec).Firefox for Android: loadstart event dispatches synchronously (should be asynchronously as per spec).
api.RTCStatsReport.type_data-channel 📋Edge2/7/2020 Firefox7/28/2020172
api.RTCStatsReport.type_data-channel.bytesReceived 📋Edge2/7/2020 Firefox7/28/2020172
api.RTCStatsReport.type_data-channel.bytesSent 📋Edge2/7/2020 Firefox7/28/2020172
api.RTCStatsReport.type_data-channel.id 📋Edge2/7/2020 Firefox7/28/2020172
api.RTCStatsReport.type_data-channel.label 📋Edge2/7/2020 Firefox7/28/2020172
api.RTCStatsReport.type_data-channel.messagesReceived 📋Edge2/7/2020 Firefox7/28/2020172
api.RTCStatsReport.type_data-channel.messagesSent 📋Edge2/7/2020 Firefox7/28/2020172
api.RTCStatsReport.type_data-channel.protocol 📋Edge2/7/2020 Firefox7/28/2020172
api.RTCStatsReport.type_data-channel.state 📋Edge2/7/2020 Firefox7/28/2020172
api.RTCStatsReport.type_data-channel.timestamp 📋Edge2/7/2020 Firefox7/28/2020172
api.RTCStatsReport.type_data-channel.type 📋Edge2/7/2020 Firefox7/28/2020172
api.Animation.commitStyles 📋Safari3/24/2020 Edge7/16/2020114
api.Animation.finished 📋Firefox10/23/2018 Edge7/16/2020632
api.Animation.persist 📋Safari3/24/2020 Edge7/16/2020114
api.Animation.ready 📋Firefox10/23/2018 Edge7/16/2020632
api.Animation.remove_event 📋Safari3/24/2020 Edge7/16/2020114
api.Animation.remove_filling_animation Safari3/24/2020 Edge7/16/2020114
api.Animation.replaceState 📋Safari3/24/2020 Edge7/16/2020114
api.Animation.timeline 📋Safari3/24/2020 Edge7/16/2020114
Firefox: Only the getter is supportedFirefox for Android: Only the getter is supportedSafari: Only the getter is supportedSafari on iOS: Only the getter is supportedWebView on iOS: Only the getter is supported
api.AnimationPlaybackEvent 📋Firefox10/23/2018 Edge7/16/2020632
api.AnimationPlaybackEvent.AnimationPlaybackEvent 📋Firefox10/23/2018 Edge7/16/2020632
api.AnimationPlaybackEvent.currentTime 📋Firefox10/23/2018 Edge7/16/2020632
api.AnimationPlaybackEvent.timelineTime 📋Firefox10/23/2018 Edge7/16/2020632
api.AnimationTimeline 📋Safari3/24/2020 Edge7/16/2020114
api.AnimationTimeline.currentTime 📋Safari3/24/2020 Edge7/16/2020114
api.CSSAnimation 📋Safari3/24/2020 Edge7/16/2020114
api.CSSAnimation.animationName 📋Safari3/24/2020 Edge7/16/2020114
api.CSSTransition 📋Safari3/24/2020 Edge7/16/2020114
api.CSSTransition.transitionProperty 📋Safari3/24/2020 Edge7/16/2020114
api.Document.timeline 📋Safari3/24/2020 Edge7/16/2020114
api.DocumentTimeline 📋Safari3/24/2020 Edge7/16/2020114
api.DocumentTimeline.DocumentTimeline 📋Safari3/24/2020 Edge7/16/2020114
api.Element.animate.implicit_tofrom Safari3/24/2020 Edge7/16/2020114
Safari: Implementation seems somewhat buggy. More information will follow when available.Safari on iOS: Implementation seems somewhat buggy. More information will follow when available.WebView on iOS: Implementation seems somewhat buggy. More information will follow when available.
api.Element.getAnimations 📋Safari3/24/2020 Edge7/16/2020114
api.KeyframeEffect.getKeyframes 📋Firefox10/23/2018 Edge7/16/2020632
api.KeyframeEffect.setKeyframes 📋Firefox10/23/2018 Edge7/16/2020632

2020/6

API First Browser Date Last Browser Date Days Notes
javascript.builtins.RegExp.dotAll 📋Safari4/12/2018 Firefox6/30/2020810
javascript.regular_expressions.named_backreference 📋Safari4/12/2018 Firefox6/30/2020810
javascript.regular_expressions.named_capturing_group 📋Safari4/12/2018 Firefox6/30/2020810
javascript.regular_expressions.unicode_character_class_escape 📋Safari4/12/2018 Firefox6/30/2020810

2020/5

API First Browser Date Last Browser Date Days Notes
api.Element.animationcancel_event 📋Firefox6/13/2017 Edge5/21/20201073
Chrome: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.Chrome Android: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.Edge: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.Quest Browser: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.Opera: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.Opera Android: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.Safari: Although the onanimationcancel event handler property is supported, the animationcancel event is never fired.Safari on iOS: Although the onanimationcancel event handler property is supported, the animationcancel event is never fired.Samsung Internet: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.WebView Android: The onanimationcancel event handler property is not supported. To listen to this event, use element.addEventListener('animationcancel', function() {});. See bug 41404325.WebView on iOS: Although the onanimationcancel event handler property is supported, the animationcancel event is never fired.

2020/4

API First Browser Date Last Browser Date Days Notes
api.ServiceWorkerGlobalScope.messageerror_event 📋Safari4/12/2018 Edge4/13/2020732
Safari: Although the onmessageerror property is supported, the messageerror event is never fired. See bug 272967.Safari on iOS: Although the onmessageerror property is supported, the messageerror event is never fired. See bug 272967.

2020/3

API First Browser Date Last Browser Date Days Notes
api.Animation 📋Firefox8/2/2016 Safari3/24/20201330
api.Animation.Animation 📋Firefox8/2/2016 Safari3/24/20201330
api.Animation.cancel 📋Firefox8/2/2016 Safari3/24/20201330
api.Animation.cancel_event 📋Firefox8/2/2016 Safari3/24/20201330
api.Animation.currentTime 📋Firefox8/2/2016 Safari3/24/20201330
api.Animation.effect 📋Firefox10/23/2018 Safari3/24/2020518
api.Animation.finish 📋Firefox8/2/2016 Safari3/24/20201330
api.Animation.finish_event 📋Firefox8/2/2016 Safari3/24/20201330
api.Animation.id 📋Firefox8/2/2016 Safari3/24/20201330
api.Animation.pause 📋Firefox8/2/2016 Safari3/24/20201330
api.Animation.pending 📋Firefox3/13/2018 Safari3/24/2020742
Firefox: Before version 59, the pending status was reported by a "pending" value returned from Animation.playState.Firefox for Android: Before version 59, the pending status was reported by a "pending" value returned from Animation.playState.
api.Animation.play 📋Firefox8/2/2016 Safari3/24/20201330
api.Animation.playState 📋Firefox8/2/2016 Safari3/24/20201330
Chrome: Before Chrome 50/Opera 37, this property returned idle for an animation that had not yet started. Starting with Chrome 50/Opera 37, it shows paused.Chrome Android: Before Chrome Android 50/Opera 37, this property returned idle for an animation that had not yet started. Starting with Chrome Android 50/Opera 37, it shows paused.Firefox: Before Firefox 59, this property returned pending for Animations with incomplete asynchronous operations but as of Firefox 59 this is indicated by the separate Animation.pending property. This reflects recent changes to the specification.Firefox for Android: Before Firefox for Android 59, this property returned pending for Animations with incomplete asynchronous operations but as of Firefox for Android 59 this is indicated by the separate Animation.pending property. This reflects recent changes to the specification.Quest Browser: Before Quest Browser 5.0/Opera 37, this property returned idle for an animation that had not yet started. Starting with Quest Browser 5.0/Opera 37, it shows paused.Opera: Before Chrome 50/Opera 37, this property returned idle for an animation that had not yet started. Starting with Chrome 50/Opera 37, it shows paused.Opera Android: Before Chrome 50/Opera 37, this property returned idle for an animation that had not yet started. Starting with Chrome 50/Opera 37, it shows paused.Samsung Internet: Before Samsung Internet 5.0/Opera 37, this property returned idle for an animation that had not yet started. Starting with Samsung Internet 5.0/Opera 37, it shows paused.WebView Android: Before WebView Android 50/Opera 37, this property returned idle for an animation that had not yet started. Starting with WebView Android 50/Opera 37, it shows paused.
api.Animation.playbackRate 📋Firefox8/2/2016 Safari3/24/20201330
api.Animation.reverse 📋Firefox8/2/2016 Safari3/24/20201330
api.Animation.startTime 📋Firefox8/2/2016 Safari3/24/20201330
api.Animation.updatePlaybackRate 📋Firefox5/9/2018 Safari3/24/2020685
api.AnimationEffect 📋Firefox10/23/2018 Safari3/24/2020518
api.AnimationEffect.getComputedTiming 📋Firefox10/23/2018 Safari3/24/2020518
api.AnimationEffect.getTiming 📋Firefox10/23/2018 Safari3/24/2020518
api.AnimationEffect.updateTiming 📋Firefox10/23/2018 Safari3/24/2020518
api.AnimationEvent.pseudoElement 📋Firefox8/6/2013 Safari3/24/20202422
api.Clipboard 📋Firefox10/23/2018 Safari3/24/2020518
api.Clipboard.writeText 📋Firefox10/23/2018 Safari3/24/2020518
Chrome: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Chrome: Before version 107, the user must grant the clipboard-write permission.Chrome Android: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Chrome Android: Before version 107, the user must grant the clipboard-write permission.Edge: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Edge: Before version 107, the user must grant the clipboard-write permission.Firefox: This method must be called within user gesture event handlers.Firefox: Web extensions with the clipboardWrite permission in their manifest can write data without a user gesture.Firefox for Android: This method must be called within user gesture event handlers.Firefox for Android: Web extensions with the clipboardWrite permission in their manifest can write data without a user gesture.Quest Browser: From version false, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Quest Browser: Before version false, the user must grant the clipboard-write permission.Opera: From version 93, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Opera: Before version 93, the user must grant the clipboard-write permission.Opera Android: From version 73, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Opera Android: Before version 73, the user must grant the clipboard-write permission.Safari: This method must be called within user gesture event handlers.Safari on iOS: This method must be called within user gesture event handlers.Samsung Internet: From version 21.0, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.Samsung Internet: Before version 21.0, the user must grant the clipboard-write permission.WebView Android: From version 107, this method must be called within user gesture event handlers, or the user must grant the clipboard-write permission.WebView Android: Before version 107, the user must grant the clipboard-write permission.WebView on iOS: This method must be called within user gesture event handlers.
api.Element.animate 📋Firefox8/2/2016 Safari3/24/20201330
api.Element.animate.options_id_parameter 📋Firefox8/2/2016 Safari3/24/20201330
api.Element.part 📋Firefox1/7/2020 Safari3/24/202077
api.Element.transitionrun_event 📋Edge7/29/2015 Safari3/24/20201700
Internet Explorer: The ontransitionrun event handler property is not supported. To listen to this event, use element.addEventListener('transitionrun', function() {});.Safari: The event handler exists but will never be called.Safari on iOS: The event handler exists but will never be called.WebView on iOS: The event handler exists but will never be called.
api.Element.transitionstart_event 📋Edge7/29/2015 Safari3/24/20201700
Internet Explorer: The ontransitionstart event handler property is not supported. To listen to this event, use element.addEventListener('transitionstart', function() {});.Safari: The event handler exists but will never be called.Safari on iOS: The event handler exists but will never be called.WebView on iOS: The event handler exists but will never be called.
api.FormData.worker_support Firefox7/2/2015 Safari3/24/20201727
api.GeolocationCoordinates 📋Firefox1/7/2020 Safari3/24/202077
api.GeolocationPosition 📋Firefox1/7/2020 Safari3/24/202077
api.GeolocationPositionError 📋Firefox1/7/2020 Safari3/24/202077
api.KeyframeEffect 📋Firefox10/23/2018 Safari3/24/2020518
api.KeyframeEffect.KeyframeEffect 📋Firefox10/23/2018 Safari3/24/2020518
api.KeyframeEffect.target 📋Firefox10/23/2018 Safari3/24/2020518
api.MediaDevices.getSupportedConstraints.return_object_property_echoCancellation 📋Firefox4/26/2016 Safari3/24/20201428
api.Navigator.clipboard 📋Firefox10/23/2018 Safari3/24/2020518
api.RTCDTMFSender 📋Firefox3/7/2017 Safari3/24/20201113
api.RTCDTMFSender.insertDTMF 📋Firefox3/7/2017 Safari3/24/20201113
api.RTCDTMFSender.toneBuffer 📋Firefox3/7/2017 Safari3/24/20201113
api.RTCDTMFSender.tonechange_event 📋Firefox3/7/2017 Safari3/24/20201113
api.RTCDTMFToneChangeEvent 📋Edge7/29/2015 Safari3/24/20201700
api.RTCDTMFToneChangeEvent.RTCDTMFToneChangeEvent 📋Edge11/12/2015 Safari3/24/20201594
api.RTCDTMFToneChangeEvent.tone 📋Edge7/29/2015 Safari3/24/20201700
api.RTCRtpSender.dtmf 📋Firefox3/7/2017 Safari3/24/20201113
api.RTCStatsReport.type_candidate-pair.id 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_candidate-pair.timestamp 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_candidate-pair.type 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_inbound-rtp.bytesReceived 📋Firefox2/4/2014 Safari3/24/20202240
api.RTCStatsReport.type_inbound-rtp.id 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_inbound-rtp.jitter 📋Firefox2/4/2014 Safari3/24/20202240
api.RTCStatsReport.type_inbound-rtp.packetsLost 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_inbound-rtp.packetsReceived 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_inbound-rtp.timestamp 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_inbound-rtp.type 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_local-candidate.id 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_local-candidate.timestamp 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_local-candidate.type 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_outbound-rtp.bytesSent 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_outbound-rtp.id 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_outbound-rtp.packetsSent 📋Firefox2/4/2014 Safari3/24/20202240
api.RTCStatsReport.type_outbound-rtp.timestamp 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_outbound-rtp.type 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_remote-candidate.id 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_remote-candidate.timestamp 📋Firefox1/7/2020 Safari3/24/202077
api.RTCStatsReport.type_remote-candidate.type 📋Firefox1/7/2020 Safari3/24/202077
api.ResizeObserver 📋Firefox9/3/2019 Safari3/24/2020203
api.ResizeObserver.ResizeObserver 📋Firefox9/3/2019 Safari3/24/2020203
api.ResizeObserver.disconnect 📋Firefox9/3/2019 Safari3/24/2020203
api.ResizeObserver.observe 📋Firefox9/3/2019 Safari3/24/2020203
api.ResizeObserver.unobserve 📋Firefox9/3/2019 Safari3/24/2020203
api.ResizeObserverEntry 📋Firefox9/3/2019 Safari3/24/2020203
api.ResizeObserverEntry.contentRect 📋Firefox9/3/2019 Safari3/24/2020203
api.ResizeObserverEntry.target 📋Firefox9/3/2019 Safari3/24/2020203
api.SVGLengthList.length 📋Firefox6/21/2011 Safari3/24/20203199
api.SVGNumberList.length 📋Firefox6/21/2011 Safari3/24/20203199
api.SVGPointList.length 📋Firefox6/21/2011 Safari3/24/20203199
api.SVGStringList.length 📋Firefox4/24/2012 Safari3/24/20202891
api.SVGTransformList.length 📋Firefox12/20/2011 Safari3/24/20203017
javascript.grammar.hashbang_comments 📋Firefox5/21/2019 Safari3/24/2020308
javascript.operators.nullish_coalescing 📋Firefox1/7/2020 Safari3/24/202077
javascript.operators.optional_chaining 📋Edge2/7/2020 Safari3/24/202046
api.HTMLIFrameElement.allow 📋Safari4/12/2018 Firefox3/10/2020698
api.TextMetrics.actualBoundingBoxAscent 📋Safari4/12/2018 Firefox3/10/2020698
api.TextMetrics.actualBoundingBoxDescent 📋Safari4/12/2018 Firefox3/10/2020698
api.TextMetrics.actualBoundingBoxLeft 📋Safari4/12/2018 Firefox3/10/2020698
api.TextMetrics.actualBoundingBoxRight 📋Safari4/12/2018 Firefox3/10/2020698

2020/2

API First Browser Date Last Browser Date Days Notes
api.EXT_sRGB 📋Safari9/30/2015 Edge2/7/20201591
Firefox: Not supported on Windows.
api.RTCStatsReport.type_inbound-rtp.ssrc 📋Firefox2/4/2014 Edge2/7/20202194
api.RTCStatsReport.type_local-candidate 📋Firefox2/4/2014 Edge2/7/20202194
api.RTCStatsReport.type_local-candidate.candidateType 📋Firefox2/4/2014 Edge2/7/20202194
api.RTCStatsReport.type_local-candidate.port 📋Safari3/25/2019 Edge2/7/2020319
api.RTCStatsReport.type_local-candidate.priority 📋Safari3/25/2019 Edge2/7/2020319
api.RTCStatsReport.type_local-candidate.protocol 📋Firefox12/11/2018 Edge2/7/2020423
api.RTCStatsReport.type_local-candidate.transportId 📋Firefox7/22/2014 Edge2/7/20202026
api.RTCStatsReport.type_outbound-rtp 📋Firefox2/4/2014 Edge2/7/20202194
api.RTCStatsReport.type_outbound-rtp.ssrc 📋Firefox2/4/2014 Edge2/7/20202194
api.RTCStatsReport.type_remote-candidate 📋Firefox2/4/2014 Edge2/7/20202194
api.RTCStatsReport.type_remote-candidate.candidateType 📋Firefox2/4/2014 Edge2/7/20202194
api.RTCStatsReport.type_remote-candidate.port 📋Safari3/25/2019 Edge2/7/2020319
api.RTCStatsReport.type_remote-candidate.priority 📋Safari3/25/2019 Edge2/7/2020319
api.RTCStatsReport.type_remote-candidate.protocol 📋Firefox12/11/2018 Edge2/7/2020423
api.RTCStatsReport.type_remote-candidate.transportId 📋Firefox7/22/2014 Edge2/7/20202026
api.RTCStatsReport.type_remote-inbound-rtp 📋Firefox2/4/2014 Edge2/7/20202194
api.RTCStatsReport.type_remote-inbound-rtp.ssrc 📋Firefox2/4/2014 Edge2/7/20202194

2020/1

API First Browser Date Last Browser Date Days Notes
api.AudioContext.createMediaStreamDestination 📋Firefox10/29/2013 Edge1/15/20202269
api.AudioParam.maxValue 📋Safari7/25/2012 Edge1/15/20202730
api.AudioParam.minValue 📋Safari7/25/2012 Edge1/15/20202730
api.AudioTrack 📋Firefox10/14/2014 Edge1/15/20201919
api.AudioTrack.enabled 📋Firefox10/14/2014 Edge1/15/20201919
api.AudioTrack.id 📋Firefox10/14/2014 Edge1/15/20201919
api.AudioTrack.kind 📋Firefox10/14/2014 Edge1/15/20201919
api.AudioTrack.label 📋Firefox10/14/2014 Edge1/15/20201919
api.AudioTrack.language 📋Firefox10/14/2014 Edge1/15/20201919
api.AudioTrackList 📋Safari10/22/2013 Edge1/15/20202276
api.AudioTrackList.addtrack_event 📋Safari10/22/2013 Edge1/15/20202276
api.AudioTrackList.change_event 📋Safari10/22/2013 Edge1/15/20202276
api.AudioTrackList.getTrackById 📋Safari10/22/2013 Edge1/15/20202276
api.AudioTrackList.length 📋Safari10/22/2013 Edge1/15/20202276
api.AudioTrackList.removetrack_event 📋Safari10/22/2013 Edge1/15/20202276
api.BeforeUnloadEvent.user_interaction Firefox1/26/2016 Edge1/15/20201450
api.CSS.escape_static 📋Firefox7/22/2014 Edge1/15/20202003
api.CSS.supports_static.optional_parens Firefox8/8/2017 Edge1/15/2020890
api.CacheStorage.secure_context_required Firefox1/26/2016 Edge1/15/20201450
api.CanvasPattern.setTransform 📋Firefox10/14/2014 Edge1/15/20201919
api.CanvasRenderingContext2D.getTransform 📋Safari4/12/2018 Edge1/15/2020643
api.CanvasRenderingContext2D.isPointInStroke 📋Firefox2/19/2013 Edge1/15/20202521
api.CanvasRenderingContext2D.isPointInStroke.path_parameter Safari10/22/2013 Edge1/15/20202276
api.CanvasRenderingContext2D.resetTransform 📋Firefox2/24/2015 Edge1/15/20201786
api.CanvasRenderingContext2D.setTransform.matrix_parameter Safari4/12/2018 Edge1/15/2020643
api.CredentialsContainer.store 📋Firefox5/9/2018 Edge1/15/2020616
api.CustomElementRegistry 📋Safari3/27/2017 Edge1/15/20201024
api.CustomElementRegistry.define 📋Safari3/27/2017 Edge1/15/20201024
api.CustomElementRegistry.get 📋Safari3/27/2017 Edge1/15/20201024
Safari: Supports 'Autonomous custom elements' but not 'Customized built-in elements'. See bug 182671.Safari on iOS: Supports 'Autonomous custom elements' but not 'Customized built-in elements'. See bug 182671.WebView on iOS: Supports 'Autonomous custom elements' but not 'Customized built-in elements'. See bug 182671.
api.CustomElementRegistry.upgrade 📋Firefox10/23/2018 Edge1/15/2020449
api.CustomElementRegistry.whenDefined 📋Safari3/27/2017 Edge1/15/20201024
api.DOMException.DOMException 📋Firefox3/31/2015 Edge1/15/20201751
api.DOMMatrix 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.DOMMatrix 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.a 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.b 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.c 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.d 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.e 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.f 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.fromFloat32Array_static 📋Safari9/19/2017 Edge1/15/2020848
api.DOMMatrix.fromFloat64Array_static 📋Safari9/19/2017 Edge1/15/2020848
api.DOMMatrix.fromMatrix_static 📋Safari9/19/2017 Edge1/15/2020848
api.DOMMatrix.invertSelf 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m11 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m12 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m13 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m14 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m21 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m22 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m23 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m24 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m31 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m32 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m33 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m34 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m41 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m42 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m43 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.m44 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.multiplySelf 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.preMultiplySelf 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.rotateAxisAngleSelf 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.rotateFromVectorSelf 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.rotateSelf 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.scale3dSelf 📋Firefox10/14/2014 Edge1/15/20201919
Firefox: Starting in Firefox 69, the first parameter (scale) is now optional with a default value of 1, per the specification. Previously it was required.Firefox for Android: Starting in Firefox for Android 79, the first parameter (scale) is now optional with a default value of 1, per the specification. Previously it was required.
api.DOMMatrix.scaleSelf 📋Firefox10/14/2014 Edge1/15/20201919
Firefox: Firefox 69 introduced support for the modern six-parameter syntax for scaleSelf(). Previously, it only supported the older three-parameter syntax: scale(scaleX[, originX][, originY]]]).Firefox for Android: Firefox for Android 79 introduced support for the modern six-parameter syntax for scaleSelf(). Previously, it only supported the older three-parameter syntax: scale(scaleX[, originX][, originY]]]).
api.DOMMatrix.setMatrixValue 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.skewXSelf 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.skewYSelf 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.translateSelf 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrix.worker_support Safari9/19/2017 Edge1/15/2020848
api.DOMMatrixReadOnly 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.DOMMatrixReadOnly 📋Safari9/19/2017 Edge1/15/2020848
api.DOMMatrixReadOnly.a 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.b 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.c 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.d 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.e 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.f 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.flipX 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.flipY 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.fromFloat32Array_static 📋Safari9/19/2017 Edge1/15/2020848
api.DOMMatrixReadOnly.fromFloat64Array_static 📋Safari9/19/2017 Edge1/15/2020848
api.DOMMatrixReadOnly.fromMatrix_static 📋Safari9/19/2017 Edge1/15/2020848
api.DOMMatrixReadOnly.inverse 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.is2D 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.isIdentity 📋Safari9/19/2017 Edge1/15/2020848
api.DOMMatrixReadOnly.m11 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m12 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m13 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m14 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m21 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m22 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m23 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m24 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m31 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m32 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m33 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m34 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m41 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m42 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m43 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.m44 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.multiply 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.rotate 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.rotateAxisAngle 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.rotateFromVector 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.scale 📋Firefox10/14/2014 Edge1/15/20201919
Firefox: Firefox 69 introduced support for the modern six-parameter syntax for scale(). Previously, it only supported the older three-parameter syntax: scale(scaleX[, originX][, originY]]]).Firefox for Android: Firefox for Android 79 introduced support for the modern six-parameter syntax for scale(). Previously, it only supported the older three-parameter syntax: scale(scaleX[, originX][, originY]]]).
api.DOMMatrixReadOnly.scale3d 📋Firefox10/14/2014 Edge1/15/20201919
Firefox: Starting in Firefox 69, the first parameter (scale) is now optional with a default value of 1, per the specification. Previously it was required.Firefox for Android: Starting in Firefox for Android 79, the first parameter (scale) is now optional with a default value of 1, per the specification. Previously it was required.
api.DOMMatrixReadOnly.skewX 📋Firefox10/14/2014 Edge1/15/20201919
Firefox: Before Firefox 69, the sx parameter was required; you may now call skewX() with no inputs. A value of 0 is correctly assumed.Firefox for Android: Before Firefox for Android 79, the sx parameter was required; you may now call skewX() with no inputs. A value of 0 is correctly assumed.
api.DOMMatrixReadOnly.skewY 📋Firefox10/14/2014 Edge1/15/20201919
Firefox: Before Firefox 69, the sy parameter was required; you may now call skewY() with no inputs. A value of 0 is correctly assumed.Firefox for Android: Before Firefox for Android 79, the sy parameter was required; you may now call skewY() with no inputs. A value of 0 is correctly assumed.
api.DOMMatrixReadOnly.toFloat32Array 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.toFloat64Array 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.toJSON 📋Safari9/19/2017 Edge1/15/2020848
api.DOMMatrixReadOnly.toString Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.transformPoint 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.translate 📋Firefox10/14/2014 Edge1/15/20201919
api.DOMMatrixReadOnly.worker_support Safari9/19/2017 Edge1/15/2020848
api.DOMPoint 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMPoint.DOMPoint 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMPoint.fromPoint_static 📋Safari3/27/2017 Edge1/15/20201024
api.DOMPoint.w 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMPoint.worker_support Safari3/27/2017 Edge1/15/20201024
api.DOMPoint.x 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMPoint.y 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMPoint.z 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMPointReadOnly 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMPointReadOnly.DOMPointReadOnly 📋Safari3/27/2017 Edge1/15/20201024
api.DOMPointReadOnly.fromPoint_static 📋Safari3/27/2017 Edge1/15/20201024
api.DOMPointReadOnly.matrixTransform 📋Safari9/19/2017 Edge1/15/2020848
api.DOMPointReadOnly.toJSON 📋Safari3/27/2017 Edge1/15/20201024
api.DOMPointReadOnly.w 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMPointReadOnly.worker_support Safari3/27/2017 Edge1/15/20201024
api.DOMPointReadOnly.x 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMPointReadOnly.y 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMPointReadOnly.z 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMQuad 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMQuad.DOMQuad 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMQuad.fromQuad_static 📋Safari9/19/2017 Edge1/15/2020848
api.DOMQuad.fromRect_static 📋Safari9/19/2017 Edge1/15/2020848
api.DOMQuad.getBounds 📋Safari9/19/2017 Edge1/15/2020848
api.DOMQuad.p1 📋Firefox7/22/2014 Edge1/15/20202003
Firefox: Before Firefox 69, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false.Firefox for Android: Before Firefox for Android 79, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false.
api.DOMQuad.p2 📋Firefox7/22/2014 Edge1/15/20202003
Firefox: Before Firefox 69, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false.Firefox for Android: Before Firefox for Android 79, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false.
api.DOMQuad.p3 📋Firefox7/22/2014 Edge1/15/20202003
Firefox: Before Firefox 69, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false.Firefox for Android: Before Firefox for Android 79, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false.
api.DOMQuad.p4 📋Firefox7/22/2014 Edge1/15/20202003
Firefox: Before Firefox 69, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false.Firefox for Android: Before Firefox for Android 79, the default value of p1 through p4 was undefined; now DOMQuadInit defines these as false.
api.DOMQuad.toJSON 📋Safari9/19/2017 Edge1/15/2020848
api.DOMQuad.worker_support Safari9/19/2017 Edge1/15/2020848
api.DOMRect 📋Firefox2/4/2014 Edge1/15/20202171
api.DOMRect.DOMRect 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMRect.fromRect_static 📋Safari3/27/2017 Edge1/15/20201024
api.DOMRect.worker_support Safari3/27/2017 Edge1/15/20201024
api.DOMRect.x 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMRect.y 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMRectList 📋Firefox2/4/2014 Edge1/15/20202171
api.DOMRectReadOnly 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMRectReadOnly.DOMRectReadOnly 📋Safari3/27/2017 Edge1/15/20201024
api.DOMRectReadOnly.fromRect_static 📋Safari3/27/2017 Edge1/15/20201024
api.DOMRectReadOnly.toJSON 📋Safari3/27/2017 Edge1/15/20201024
api.DOMRectReadOnly.worker_support Safari3/27/2017 Edge1/15/20201024
api.DOMRectReadOnly.x 📋Firefox7/22/2014 Edge1/15/20202003
api.DOMRectReadOnly.y 📋Firefox7/22/2014 Edge1/15/20202003
api.Document.elementsFromPoint 📋Firefox4/26/2016 Edge1/15/20201359
Chrome: Before Chrome 66, this method returned null when the element was a child of a host node. See bug 40537452.Chrome Android: Before Chrome Android 66, this method returned null when the element was a child of a host node. See bug 40537452.Edge: Returns a NodeList instead of an array. See the MSDN documentation. Returns null when the point provided has no elements beneath it (e.g., when given a point outside the document).Internet Explorer: Returns a NodeList instead of an array. See the MSDN documentation. Returns null when the point provided has no elements beneath it (e.g., when given a point outside the document).Quest Browser: Before Quest Browser 5.0, this method returned null when the element was a child of a host node. See bug 40537452.Samsung Internet: Before Samsung Internet 9.0, this method returned null when the element was a child of a host node. See bug 40537452.WebView Android: Before WebView Android 66, this method returned null when the element was a child of a host node. See bug 40537452.
api.Document.fonts 📋Firefox9/22/2015 Edge1/15/20201576
api.Element.DOMActivate_event 📋Safari6/23/2003 Edge1/15/20206050
api.Element.assignedSlot 📋Safari9/20/2016 Edge1/15/20201212
api.Element.attachShadow 📋Safari9/20/2016 Edge1/15/20201212
api.Element.hasPointerCapture 📋Firefox3/13/2018 Edge1/15/2020673
api.Element.input_event 📋Safari3/18/2008 Edge1/15/20204320
Edge: Not supported on select, checkbox, or radio inputs.Internet Explorer: Only supports input of type text and password.
api.Element.scroll 📋Firefox2/24/2015 Edge1/15/20201786
api.Element.scroll.options_left_parameter Firefox2/24/2015 Edge1/15/20201786
api.Element.scroll.options_top_parameter Firefox2/24/2015 Edge1/15/20201786
api.Element.scrollBy 📋Firefox2/24/2015 Edge1/15/20201786
api.Element.scrollBy.options_left_parameter Firefox2/24/2015 Edge1/15/20201786
api.Element.scrollBy.options_top_parameter Firefox2/24/2015 Edge1/15/20201786
api.Element.scrollIntoView 📋Firefox11/9/2004 Edge1/15/20205545
Edge: The only parameter supported is alignToTop.Edge: Only supported for HTMLElement, not all Element objects, such as SVGElement.Edge: No support for smooth behavior.Internet Explorer: Only supported for HTMLElement, not all Element objects, such as SVGElement.Internet Explorer: No support for smooth behavior or center options.Safari: No support for center option.Safari: Before Safari 15.4, there was no support for the smooth behavior.Safari on iOS: No support for center option.Safari on iOS: Before iOS 15.4, there was no support for the smooth behavior.WebView on iOS: No support for center option.WebView on iOS: Before iOS 15.4, there was no support for the smooth behavior.
api.Element.scrollTo 📋Firefox2/24/2015 Edge1/15/20201786
api.Element.scrollTo.options_left_parameter Firefox2/24/2015 Edge1/15/20201786
api.Element.scrollTo.options_top_parameter Firefox2/24/2015 Edge1/15/20201786
api.Element.shadowRoot 📋Safari9/20/2016 Edge1/15/20201212
api.Element.slot 📋Safari9/20/2016 Edge1/15/20201212
api.Event.composed 📋Safari9/20/2016 Edge1/15/20201212
Firefox: Before Firefox 95, this property was incorrectly set to false on <select> and <input type='checkbox'> elements.Firefox for Android: Before Firefox for Android 95, this property was incorrectly set to false on <select> and <input type='checkbox'> elements.Node.js: This is not used in Node.js and is provided purely for completeness.
api.Event.composedPath 📋Safari9/20/2016 Edge1/15/20201212
Node.js: Returns an array with either the event itself or empty.Node.js: This is not used in Node.js and is provided purely for completeness.
api.EventSource 📋Safari6/7/2010 Edge1/15/20203509
api.EventSource.EventSource 📋Safari6/7/2010 Edge1/15/20203509
api.EventSource.EventSource.options_withCredentials_parameter Firefox3/13/2012 Edge1/15/20202864
api.EventSource.close 📋Safari6/7/2010 Edge1/15/20203509
api.EventSource.error_event 📋Safari6/7/2010 Edge1/15/20203509
api.EventSource.message_event 📋Safari6/7/2010 Edge1/15/20203509
api.EventSource.open_event 📋Safari6/7/2010 Edge1/15/20203509
api.EventSource.readyState 📋Safari6/7/2010 Edge1/15/20203509
api.EventSource.url 📋Firefox8/16/2011 Edge1/15/20203074
api.EventSource.withCredentials 📋Firefox8/16/2011 Edge1/15/20203074
api.EventTarget.addEventListener.options_parameter.options_passive_parameter_default_true_touch Safari4/12/2018 Edge1/15/2020643
api.File.File 📋Firefox3/18/2014 Edge1/15/20202129
api.FileSystemDirectoryEntry 📋Firefox11/15/2016 Edge1/15/20201156
api.FileSystemDirectoryEntry.createReader 📋Firefox11/15/2016 Edge1/15/20201156
api.FileSystemDirectoryEntry.getDirectory 📋Firefox11/15/2016 Edge1/15/20201156
Firefox: In Firefox, the errorCallback's input parameter is a DOMException rather than a FileError object.Firefox for Android: In Firefox for Android, the errorCallback's input parameter is a DOMException rather than a FileError object.
api.FileSystemDirectoryEntry.getFile 📋Firefox11/15/2016 Edge1/15/20201156
Firefox: In Firefox, the errorCallback's input parameter is a DOMException rather than a FileError object.Firefox for Android: In Firefox for Android, the errorCallback's input parameter is a DOMException rather than a FileError object.
api.FileSystemDirectoryReader.readEntries 📋Firefox11/15/2016 Edge1/15/20201156
api.FileSystemEntry 📋Firefox11/15/2016 Edge1/15/20201156
api.FileSystemEntry.filesystem 📋Firefox11/15/2016 Edge1/15/20201156
api.FileSystemEntry.fullPath 📋Firefox11/15/2016 Edge1/15/20201156
api.FileSystemEntry.getParent 📋Firefox3/7/2017 Edge1/15/20201044
api.FileSystemEntry.isDirectory 📋Firefox11/15/2016 Edge1/15/20201156
api.FileSystemEntry.isFile 📋Firefox11/15/2016 Edge1/15/20201156
api.FileSystemEntry.name 📋Firefox11/15/2016 Edge1/15/20201156
api.FileSystemFileEntry 📋Firefox11/15/2016 Edge1/15/20201156
api.FileSystemFileEntry.file 📋Firefox11/15/2016 Edge1/15/20201156
api.FontFace 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFace.FontFace 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFace.display 📋Firefox1/23/2018 Edge1/15/2020722
api.FontFace.family 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFace.load 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFace.loaded 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFace.status 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFace.stretch 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFace.style 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFace.unicodeRange 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFace.weight 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet 📋Firefox9/22/2015 Edge1/15/20201576
Chrome: Chrome does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.Chrome Android: Chrome Android does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.Edge: Edge does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.Quest Browser: Quest Browser does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.Opera: Opera does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.Opera Android: Opera Android does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.Samsung Internet: Samsung Internet does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.WebView Android: WebView Android does not expose the FontFaceSet interface directly, and is only available through Document.fonts or WorkerGlobalScope.fonts.
api.FontFaceSet.@@iterator 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.add 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.clear 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.delete 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.entries Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.forEach Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.has Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.keys Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.load 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.loading_event 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.loadingdone_event 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.loadingerror_event 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.ready 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.size Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.status 📋Firefox9/22/2015 Edge1/15/20201576
api.FontFaceSet.values Firefox9/22/2015 Edge1/15/20201576
api.Geolocation.secure_context_required Safari9/20/2016 Edge1/15/20201212
WebView Android: Secure context is only required for applications targeting Android Nougat (7) and higher. See bug 40465140.
api.GeolocationCoordinates.secure_context_required Safari9/20/2016 Edge1/15/20201212
api.HTMLAnchorElement.password 📋Firefox12/10/2013 Edge1/15/20202227
api.HTMLAnchorElement.username 📋Firefox12/10/2013 Edge1/15/20202227
api.HTMLAreaElement.password 📋Firefox12/10/2013 Edge1/15/20202227
api.HTMLAreaElement.username 📋Firefox12/10/2013 Edge1/15/20202227
api.HTMLCanvasElement.captureStream 📋Firefox12/15/2015 Edge1/15/20201492
api.HTMLCanvasElement.getContext.bitmaprenderer_context Firefox4/26/2016 Edge1/15/20201359
api.HTMLCanvasElement.getContext.webgl_context Firefox9/17/2013 Edge1/15/20202311
api.HTMLCanvasElement.getContext.webgl_context.options_powerPreference_parameter 📋Safari3/27/2017 Edge1/15/20201024
Chrome: Chrome respects the GPU hint on macOS only.Chrome Android: Chrome Android respects the GPU hint on macOS only.Edge: Edge respects the GPU hint on macOS only.Firefox: Firefox respects the GPU hint on macOS only.Quest Browser: Quest Browser respects the GPU hint on macOS only.Opera: Opera respects the GPU hint on macOS only.Opera Android: Opera Android respects the GPU hint on macOS only.Samsung Internet: Samsung Internet respects the GPU hint on macOS only.WebView Android: WebView Android respects the GPU hint on macOS only.
api.HTMLCanvasElement.toBlob 📋Firefox1/8/2013 Edge1/15/20202563
api.HTMLCanvasElement.toBlob.quality_parameter Firefox10/29/2013 Edge1/15/20202269
api.HTMLCanvasElement.toBlob.type_parameter_jpeg Firefox1/8/2013 Edge1/15/20202563
api.HTMLCanvasElement.toBlob.type_parameter_png Firefox1/8/2013 Edge1/15/20202563
api.HTMLCanvasElement.toDataURL.type_parameter_jpeg Firefox1/8/2013 Edge1/15/20202563
api.HTMLCanvasElement.toDataURL.type_parameter_png Firefox1/8/2013 Edge1/15/20202563
api.HTMLDetailsElement 📋Safari7/25/2012 Edge1/15/20202730
api.HTMLDetailsElement.open 📋Safari7/25/2012 Edge1/15/20202730
api.HTMLElement.toggle_event 📋Firefox9/20/2016 Edge1/15/20201212
api.HTMLElement.toggle_event.details_elements 📋Firefox9/20/2016 Edge1/15/20201212
api.HTMLEmbedElement.align 📋Firefox11/9/2004 Edge1/15/20205545
api.HTMLEmbedElement.type 📋Firefox11/9/2004 Edge1/15/20205545
api.HTMLIFrameElement.srcdoc 📋Safari7/25/2012 Edge1/15/20202730
api.HTMLImageElement.decode 📋Safari4/12/2018 Edge1/15/2020643
api.HTMLImageElement.decoding 📋Safari4/12/2018 Edge1/15/2020643
api.HTMLInputElement.setRangeText 📋Safari10/22/2013 Edge1/15/20202276
api.HTMLInputElement.webkitEntries 📋Firefox11/15/2016 Edge1/15/20201156
api.HTMLLinkElement.sizes 📋Safari7/25/2012 Edge1/15/20202730
Chrome: Before Chrome 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Chrome Android: Before Chrome Android 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Quest Browser: Before Quest Browser 5.0, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Opera: Before Opera 37, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Opera Android: Before Opera Android 37, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Samsung Internet: Before Samsung Internet 5.0, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.WebView Android: Before WebView 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.
api.HTMLMediaElement.audioTracks 📋Safari10/22/2013 Edge1/15/20202276
api.HTMLMediaElement.videoTracks 📋Safari10/22/2013 Edge1/15/20202276
api.HTMLOListElement.reversed 📋Safari7/25/2012 Edge1/15/20202730
api.HTMLSelectElement.autocomplete 📋Safari3/21/2016 Edge1/15/20201395
api.HTMLSlotElement 📋Safari9/20/2016 Edge1/15/20201212
api.HTMLSlotElement.assignedElements 📋Firefox3/19/2019 Edge1/15/2020302
api.HTMLSlotElement.assignedNodes 📋Safari9/20/2016 Edge1/15/20201212
api.HTMLSlotElement.name 📋Safari9/20/2016 Edge1/15/20201212
api.HTMLSlotElement.slotchange_event 📋Safari3/27/2017 Edge1/15/20201024
Safari: The onslotchange event handler property is not supported.Safari on iOS: The onslotchange event handler property is not supported.WebView on iOS: The onslotchange event handler property is not supported.
api.HTMLTextAreaElement.autocomplete 📋Safari3/21/2016 Edge1/15/20201395
api.HTMLTextAreaElement.selectionDirection 📋Firefox11/8/2011 Edge1/15/20202990
api.HTMLTextAreaElement.setRangeText 📋Safari10/22/2013 Edge1/15/20202276
api.HTMLVideoElement.resize_event 📋Safari3/18/2008 Edge1/15/20204320
Edge: The onresize event handler property is not supported.Internet Explorer: The onresize event handler property is not supported.
api.History.scrollRestoration 📋Firefox4/26/2016 Edge1/15/20201359
api.IDBCursor.continuePrimaryKey 📋Firefox1/31/2012 Edge1/15/20202906
api.IDBCursor.key.binary_keys Firefox1/24/2017 Edge1/15/20201086
api.IDBDatabase.close_event 📋Firefox11/15/2016 Edge1/15/20201156
api.IDBIndex.getAll 📋Firefox1/26/2016 Edge1/15/20201450
api.IDBIndex.getAllKeys 📋Firefox1/26/2016 Edge1/15/20201450
api.IDBIndex.name.renaming_through_name_setter Firefox9/20/2016 Edge1/15/20201212
api.IDBKeyRange.includes 📋Firefox6/7/2016 Edge1/15/20201317
api.IDBObjectStore.autoIncrement 📋Firefox1/31/2012 Edge1/15/20202906
api.IDBObjectStore.getAll 📋Firefox1/26/2016 Edge1/15/20201450
api.IDBObjectStore.getAllKeys 📋Firefox1/26/2016 Edge1/15/20201450
api.IDBObjectStore.getKey 📋Firefox1/24/2017 Edge1/15/20201086
api.IDBObjectStore.openKeyCursor 📋Firefox1/26/2016 Edge1/15/20201450
api.IDBTransaction.objectStoreNames 📋Firefox1/31/2012 Edge1/15/20202906
api.IDBVersionChangeEvent.IDBVersionChangeEvent 📋Firefox10/29/2013 Edge1/15/20202269
api.ImageBitmapRenderingContext 📋Firefox4/26/2016 Edge1/15/20201359
api.ImageBitmapRenderingContext.transferFromImageBitmap 📋Firefox11/15/2016 Edge1/15/20201156
api.InputEvent 📋Firefox7/22/2014 Edge1/15/20202003
api.InputEvent.InputEvent 📋Firefox7/22/2014 Edge1/15/20202003
api.InputEvent.data 📋Safari3/27/2017 Edge1/15/20201024
api.InputEvent.dataTransfer 📋Safari3/27/2017 Edge1/15/20201024
api.InputEvent.inputType 📋Safari3/27/2017 Edge1/15/20201024
api.KeyboardEvent.code 📋Firefox5/12/2015 Edge1/15/20201709
Chrome Android: The value is always empty.Firefox for Android: The value is always empty.Quest Browser: The value is always empty.Opera Android: The value is always empty.Samsung Internet: The value is always empty.WebView Android: The value is always empty.
api.KeyboardEvent.getModifierState.key_parameter_altgraph Firefox8/28/2012 Edge1/15/20202696
api.KeyboardEvent.getModifierState.key_parameter_meta Firefox8/28/2012 Edge1/15/20202696
api.KeyboardEvent.isComposing 📋Firefox7/22/2014 Edge1/15/20202003
api.KeyboardEvent.key.dead_key Firefox3/31/2015 Edge1/15/20201751
api.MediaCapabilities 📋Firefox10/23/2018 Edge1/15/2020449
api.MediaCapabilities.decodingInfo 📋Firefox10/23/2018 Edge1/15/2020449
Chrome: codecs string can contain any subset of optional parameters (should be all or none).Chrome: Errors if codecs string contains unexpected characters (should evaluate string up to character).Chrome Android: codecs string can contain any subset of optional parameters (should be all or none).Chrome Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).Edge: codecs string can contain any subset of optional parameters (should be all or none).Edge: Errors if codecs string contains unexpected characters (should evaluate string up to character).Firefox: The webrtc value of the type option is named transmission.Firefox: Before Firefox 101, decodingInfo() ignored codecs parameter options for av01 codecs (treating them as av1).Firefox for Android: The webrtc value of the type option is named transmission.Firefox for Android: Before Firefox for Android 101, decodingInfo() ignored codecs parameter options for av01 codecs (treating them as av1).Quest Browser: codecs string can contain any subset of optional parameters (should be all or none).Quest Browser: Errors if codecs string contains unexpected characters (should evaluate string up to character).Opera: codecs string can contain any subset of optional parameters (should be all or none).Opera: Errors if codecs string contains unexpected characters (should evaluate string up to character).Opera Android: codecs string can contain any subset of optional parameters (should be all or none).Opera Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).Samsung Internet: codecs string can contain any subset of optional parameters (should be all or none).Samsung Internet: Errors if codecs string contains unexpected characters (should evaluate string up to character).WebView Android: codecs string can contain any subset of optional parameters (should be all or none).WebView Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).
api.MediaDevices.getDisplayMedia 📋Firefox3/19/2019 Edge1/15/2020302
Chrome Android: From Chrome Android 72 to 88, this method was exposed, but always failed with NotAllowedError. See bug 40418135.Edge: Available as a member of Navigator instead of MediaDevices.Firefox: Since Firefox 33 you can capture screen data using getUserMedia(), with a video constraint called mediaSource. Before 52 it relied on a client-configurable list of allowed sites.Firefox for Android: From Firefox Android 66 to 79, this method was exposed, but always failed with NotAllowedError.Quest Browser: From Quest Browser 6.0 to 88, this method was exposed, but always failed with NotAllowedError. See bug 40418135.Opera Android: From Opera Android 51 to 88, this method was exposed, but always failed with NotAllowedError. See bug 40418135.Samsung Internet: From Samsung Internet 11.0 to 88, this method was exposed, but always failed with NotAllowedError. See bug 40418135.WebView Android: From WebView Android 72 to 88, this method was exposed, but always failed with NotAllowedError. See bug 40418135.
api.MediaDevices.getSupportedConstraints.return_object_property_deviceId 📋Firefox1/26/2016 Edge1/15/20201450
api.MediaDevices.getSupportedConstraints.return_object_property_facingMode 📋Firefox1/26/2016 Edge1/15/20201450
api.MediaDevices.getSupportedConstraints.return_object_property_frameRate 📋Firefox1/26/2016 Edge1/15/20201450
api.MediaDevices.getSupportedConstraints.return_object_property_height 📋Firefox1/26/2016 Edge1/15/20201450
api.MediaDevices.getSupportedConstraints.return_object_property_width 📋Firefox1/26/2016 Edge1/15/20201450
api.MediaDevices.getUserMedia.secure_context_required Safari9/19/2017 Edge1/15/2020848
api.MediaElementAudioSourceNode.mediaElement 📋Safari7/25/2012 Edge1/15/20202730
api.MediaKeySession.keystatuseschange_event 📋Firefox3/7/2017 Edge1/15/20201044
Chrome: The onkeystatuseschange event handler property is not supported.Chrome Android: The onkeystatuseschange event handler property is not supported.Opera: The onkeystatuseschange event handler property is not supported.Opera Android: The onkeystatuseschange event handler property is not supported.Samsung Internet: The onkeystatuseschange event handler property is not supported.WebView Android: The onkeystatuseschange event handler property is not supported.
api.MediaKeySession.message_event 📋Firefox3/7/2017 Edge1/15/20201044
Chrome: The onmessage event handler property is not supported.Chrome Android: The onmessage event handler property is not supported.Opera: The onmessage event handler property is not supported.Opera Android: The onmessage event handler property is not supported.Samsung Internet: The onmessage event handler property is not supported.WebView Android: The onmessage event handler property is not supported.
api.MediaStreamAudioSourceNode.mediaStream 📋Safari9/19/2017 Edge1/15/2020848
api.MediaStreamTrack.applyConstraints.echoCancellation_constraint 📋Firefox11/15/2016 Edge1/15/20201156
api.Navigator.geolocation.secure_context_required Safari9/20/2016 Edge1/15/20201212
api.Navigator.mediaCapabilities 📋Firefox10/23/2018 Edge1/15/2020449
api.Navigator.mediaDevices.secure_context_required Safari9/19/2017 Edge1/15/2020848
api.Node.getRootNode 📋Safari3/27/2017 Edge1/15/20201024
api.Node.isConnected 📋Firefox9/20/2016 Edge1/15/20201212
api.NodeList.@@iterator 📋Firefox2/24/2015 Edge1/15/20201786
api.PageTransitionEvent.PageTransitionEvent 📋Firefox3/13/2012 Edge1/15/20202864
api.Path2D.addPath 📋Firefox12/1/2014 Edge1/15/20201871
api.PaymentMethodChangeEvent 📋Firefox8/8/2017 Edge1/15/2020890
api.PaymentMethodChangeEvent.PaymentMethodChangeEvent 📋Firefox8/8/2017 Edge1/15/2020890
api.PaymentMethodChangeEvent.methodDetails 📋Firefox8/8/2017 Edge1/15/2020890
api.PaymentMethodChangeEvent.methodName 📋Firefox8/8/2017 Edge1/15/2020890
api.PaymentRequest.paymentmethodchange_event 📋Firefox8/8/2017 Edge1/15/2020890
api.PaymentResponse.payerdetailchange_event 📋Firefox8/8/2017 Edge1/15/2020890
api.PaymentResponse.retry 📋Firefox8/8/2017 Edge1/15/2020890
api.Performance.resourcetimingbufferfull_event 📋Firefox1/13/2015 Edge1/15/20201828
api.PerformanceObserver 📋Safari9/19/2017 Edge1/15/2020848
Node.js: Available as a part of the perf_hooks module.
api.PerformanceObserver.PerformanceObserver 📋Safari9/19/2017 Edge1/15/2020848
api.PerformanceObserver.disconnect 📋Safari9/19/2017 Edge1/15/2020848
api.PerformanceObserver.observe 📋Safari9/19/2017 Edge1/15/2020848
api.PerformanceObserver.supportedEntryTypes_static 📋Firefox7/9/2019 Edge1/15/2020190
api.PerformanceObserver.worker_support Safari9/19/2017 Edge1/15/2020848
api.PerformanceObserverEntryList 📋Safari9/19/2017 Edge1/15/2020848
Node.js: Available as a part of the perf_hooks module.Node.js: Only available as an internal instance, but can be accessed via the first parameter of the PerformanceObserver constructor.
api.PerformanceObserverEntryList.getEntries 📋Safari9/19/2017 Edge1/15/2020848
api.PerformanceObserverEntryList.getEntriesByName 📋Safari9/19/2017 Edge1/15/2020848
api.PerformanceObserverEntryList.getEntriesByType 📋Safari9/19/2017 Edge1/15/2020848
api.PointerEvent.tangentialPressure 📋Firefox3/13/2018 Edge1/15/2020673
api.ProcessingInstruction.sheet 📋Safari6/23/2003 Edge1/15/20206050
api.ProgressEvent.worker_support Safari9/20/2016 Edge1/15/20201212
Chrome: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.Chrome Android: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.Edge: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.Quest Browser: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.Opera: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.Opera Android: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.Samsung Internet: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.WebView Android: Available in dedicated workers and shared workers, not available in service workers. See bug 332663431.
api.PromiseRejectionEvent 📋Safari9/19/2017 Edge1/15/2020848
api.PromiseRejectionEvent.PromiseRejectionEvent 📋Safari9/19/2017 Edge1/15/2020848
api.PromiseRejectionEvent.promise 📋Safari9/19/2017 Edge1/15/2020848
api.PromiseRejectionEvent.reason 📋Safari9/19/2017 Edge1/15/2020848
api.RTCCertificate 📋Firefox11/3/2015 Edge1/15/20201534
api.RTCCertificate.expires 📋Firefox11/3/2015 Edge1/15/20201534
api.RTCDataChannel 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.binaryType 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.binaryType.arraybuffer_value Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.bufferedAmount 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.bufferedAmountLowThreshold 📋Firefox1/26/2016 Edge1/15/20201450
api.RTCDataChannel.bufferedamountlow_event 📋Firefox1/26/2016 Edge1/15/20201450
Chrome: The default for rtcpMuxPolicy is require.Chrome Android: The default for rtcpMuxPolicy is require.Edge: The default for rtcpMuxPolicy is require.Quest Browser: The default for rtcpMuxPolicy is require.Opera: The default for rtcpMuxPolicy is require.Opera Android: The default for rtcpMuxPolicy is require.Samsung Internet: The default for rtcpMuxPolicy is require.WebView Android: The default for rtcpMuxPolicy is require.
api.RTCDataChannel.close 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.close_event 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.error_event 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.id 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.label 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.maxPacketLifeTime 📋Safari9/19/2017 Edge1/15/2020848
api.RTCDataChannel.maxRetransmits 📋Safari9/19/2017 Edge1/15/2020848
api.RTCDataChannel.message_event 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.negotiated 📋Safari9/19/2017 Edge1/15/2020848
api.RTCDataChannel.open_event 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.ordered 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.protocol 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.readyState 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannel.send 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannelEvent 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannelEvent.RTCDataChannelEvent 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCDataChannelEvent.channel 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCPeerConnection.RTCPeerConnection.configuration_bundlePolicy_parameter 📋Firefox11/3/2015 Edge1/15/20201534
api.RTCPeerConnection.RTCPeerConnection.configuration_certificates_parameter 📋Firefox11/3/2015 Edge1/15/20201534
api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.credential_parameter 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.urls_parameter 📋Firefox3/31/2015 Edge1/15/20201751
api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.username_parameter 📋Firefox8/6/2013 Edge1/15/20202353
api.RTCPeerConnection.RTCPeerConnection.configuration_iceTransportPolicy_parameter 📋Firefox11/3/2015 Edge1/15/20201534
api.RTCPeerConnection.addIceCandidate.returns_promise Firefox3/31/2015 Edge1/15/20201751
api.RTCPeerConnection.addTrack 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCPeerConnection.addTransceiver 📋Safari9/19/2017 Edge1/15/2020848
api.RTCPeerConnection.addTransceiver.init_direction_parameter Safari9/19/2017 Edge1/15/2020848
api.RTCPeerConnection.addTransceiver.init_streams_parameter Firefox3/13/2018 Edge1/15/2020673
api.RTCPeerConnection.createAnswer.returns_promise Firefox3/31/2015 Edge1/15/20201751
api.RTCPeerConnection.createDataChannel 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCPeerConnection.createOffer.returns_promise Firefox3/31/2015 Edge1/15/20201751
api.RTCPeerConnection.currentLocalDescription 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCPeerConnection.currentRemoteDescription 📋Safari9/19/2017 Edge1/15/2020848
api.RTCPeerConnection.datachannel_event 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCPeerConnection.generateCertificate_static 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCPeerConnection.getReceivers 📋Firefox12/1/2014 Edge1/15/20201871
api.RTCPeerConnection.getSenders 📋Firefox12/1/2014 Edge1/15/20201871
api.RTCPeerConnection.getStats.returns_promise Firefox3/31/2015 Edge1/15/20201751
api.RTCPeerConnection.getStats.selector_parameter Firefox2/4/2014 Edge1/15/20202171
api.RTCPeerConnection.getTransceivers 📋Safari9/19/2017 Edge1/15/2020848
api.RTCPeerConnection.pendingLocalDescription 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCPeerConnection.pendingRemoteDescription 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCPeerConnection.removeTrack 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCPeerConnection.setLocalDescription.returns_promise Firefox3/31/2015 Edge1/15/20201751
api.RTCPeerConnection.setRemoteDescription.returns_promise Firefox3/31/2015 Edge1/15/20201751
api.RTCPeerConnection.track_event 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCRtpReceiver.getContributingSources.audioLevel 📋Firefox3/13/2018 Edge1/15/2020673
api.RTCRtpReceiver.getContributingSources.source 📋Firefox3/13/2018 Edge1/15/2020673
api.RTCRtpReceiver.getContributingSources.timestamp 📋Firefox3/13/2018 Edge1/15/2020673
Firefox: Starting in version 60, the timestamp is correctly computed based on the window's Performance time, rather than Date.getTime().Firefox for Android: Starting in version 60, the timestamp is correctly computed based on the window's Performance time, rather than Date.getTime().
api.RTCRtpReceiver.getContributingSources.video_tracks_supported Safari3/25/2019 Edge1/15/2020296
api.RTCRtpReceiver.getSynchronizationSources 📋Firefox3/13/2018 Edge1/15/2020673
api.RTCRtpReceiver.getSynchronizationSources.audio_tracks_supported Firefox3/13/2018 Edge1/15/2020673
api.RTCRtpReceiver.getSynchronizationSources.video_tracks_supported Safari3/25/2019 Edge1/15/2020296
api.RTCRtpSender.getParameters 📋Firefox4/26/2016 Edge1/15/20201359
api.RTCRtpSender.getParameters.return_object_property_encodings 📋Firefox4/26/2016 Edge1/15/20201359
api.RTCRtpSender.getParameters.return_object_property_headerExtensions 📋Firefox4/26/2016 Edge1/15/20201359
Firefox: The property is defined but not implemented/used.Firefox for Android: The property is defined but not implemented/used.
api.RTCRtpSender.replaceTrack 📋Firefox12/1/2014 Edge1/15/20201871
api.RTCRtpSender.setParameters 📋Safari9/19/2017 Edge1/15/2020848
Firefox: Before Firefox 64, changes to parameters that should update live would not do so.Firefox for Android: Before Firefox for Android 64, changes to parameters that should update live would not do so.
api.RTCRtpSender.setParameters.parameters_encodings_parameter 📋Firefox4/26/2016 Edge1/15/20201359
api.RTCRtpSender.setParameters.parameters_encodings_parameter.maxBitrate 📋Firefox4/26/2016 Edge1/15/20201359
api.RTCRtpSender.setParameters.parameters_encodings_parameter.priority 📋Firefox4/26/2016 Edge1/15/20201359
Firefox: In version 110 and later the default priority is low.Firefox for Android: In version 110 and later the default priority is low.
api.RTCRtpSender.setParameters.parameters_encodings_parameter.scaleResolutionDownBy 📋Firefox4/26/2016 Edge1/15/20201359
api.RTCRtpSender.setParameters.parameters_headerExtensions_parameter 📋Firefox4/26/2016 Edge1/15/20201359
Firefox: The property is defined but not implemented/used.Firefox for Android: The property is defined but not implemented/used.
api.RTCRtpTransceiver.currentDirection 📋Firefox3/13/2018 Edge1/15/2020673
api.RTCRtpTransceiver.direction 📋Safari9/19/2017 Edge1/15/2020848
api.RTCRtpTransceiver.mid 📋Safari9/19/2017 Edge1/15/2020848
api.RTCRtpTransceiver.receiver 📋Safari9/19/2017 Edge1/15/2020848
api.RTCRtpTransceiver.sender 📋Safari9/19/2017 Edge1/15/2020848
api.RTCRtpTransceiver.stopped Safari9/19/2017 Edge1/15/2020848
api.RTCStatsReport 📋Firefox2/4/2014 Edge1/15/20202171
api.RTCStatsReport.@@iterator Firefox8/2/2016 Edge1/15/20201261
api.RTCStatsReport.entries 📋Firefox8/2/2016 Edge1/15/20201261
api.RTCStatsReport.forEach 📋Firefox2/4/2014 Edge1/15/20202171
api.RTCStatsReport.get 📋Firefox2/4/2014 Edge1/15/20202171
api.RTCStatsReport.has 📋Firefox2/4/2014 Edge1/15/20202171
api.RTCStatsReport.keys 📋Firefox8/2/2016 Edge1/15/20201261
api.RTCStatsReport.size 📋Firefox8/2/2016 Edge1/15/20201261
api.RTCStatsReport.type_candidate-pair 📋Firefox4/29/2014 Edge1/15/20202087
api.RTCStatsReport.type_candidate-pair.bytesReceived 📋Safari9/19/2017 Edge1/15/2020848
api.RTCStatsReport.type_candidate-pair.bytesSent 📋Safari9/19/2017 Edge1/15/2020848
api.RTCStatsReport.type_candidate-pair.localCandidateId 📋Firefox4/29/2014 Edge1/15/20202087
api.RTCStatsReport.type_candidate-pair.nominated 📋Safari9/19/2017 Edge1/15/2020848
api.RTCStatsReport.type_candidate-pair.remoteCandidateId 📋Firefox4/29/2014 Edge1/15/20202087
api.RTCStatsReport.type_candidate-pair.state 📋Firefox4/29/2014 Edge1/15/20202087
api.RTCStatsReport.type_candidate-pair.transportId 📋Safari9/19/2017 Edge1/15/2020848
api.RTCStatsReport.type_inbound-rtp 📋Firefox2/4/2014 Edge1/15/20202171
api.RTCStatsReport.values Firefox8/2/2016 Edge1/15/20201261
api.RTCTrackEvent 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCTrackEvent.RTCTrackEvent 📋Firefox4/26/2016 Edge1/15/20201359
api.RTCTrackEvent.receiver 📋Firefox12/1/2014 Edge1/15/20201871
api.RTCTrackEvent.streams 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCTrackEvent.track 📋Firefox6/25/2013 Edge1/15/20202395
api.RTCTrackEvent.transceiver 📋Safari9/19/2017 Edge1/15/2020848
api.ReadableStream.ReadableStream 📋Safari3/27/2017 Edge1/15/20201024
api.ReadableStream.tee 📋Safari3/27/2017 Edge1/15/20201024
Node.js: Before 18.10.0 or 16.18.0, teeing a readable byte stream is not supported.
api.ReadableStreamDefaultController 📋Safari9/20/2016 Edge1/15/20201212
Deno: ReadableStreamDefaultController is not exposed on the global scope.Node.js: Available as a part of the stream/web module.
api.ReadableStreamDefaultController.close 📋Safari9/20/2016 Edge1/15/20201212
api.ReadableStreamDefaultController.desiredSize 📋Safari9/20/2016 Edge1/15/20201212
api.ReadableStreamDefaultController.enqueue 📋Safari9/20/2016 Edge1/15/20201212
api.ReadableStreamDefaultController.error 📋Safari9/20/2016 Edge1/15/20201212
api.ReadableStreamDefaultReader 📋Safari9/20/2016 Edge1/15/20201212
Deno: ReadableStreamDefaultReader is not exposed on the global scope.Node.js: Available as a part of the stream/web module.
api.ReadableStreamDefaultReader.cancel 📋Safari9/20/2016 Edge1/15/20201212
api.ReadableStreamDefaultReader.closed 📋Safari9/20/2016 Edge1/15/20201212
api.ReadableStreamDefaultReader.read 📋Safari9/20/2016 Edge1/15/20201212
api.ReadableStreamDefaultReader.releaseLock 📋Safari9/20/2016 Edge1/15/20201212
api.Request.cache.only-if-cached Firefox11/15/2016 Edge1/15/20201156
api.Response.Response.accept_readablestream Firefox7/2/2015 Edge1/15/20201658
api.Response.Response.body_parameter_optional Safari3/27/2017 Edge1/15/20201024
api.SVGAnimateElement 📋Safari10/26/2007 Edge1/15/20204464
api.SVGAnimateMotionElement 📋Firefox3/22/2011 Edge1/15/20203221
api.SVGAnimateTransformElement 📋Safari10/26/2007 Edge1/15/20204464
api.SVGAnimationElement 📋Safari10/26/2007 Edge1/15/20204464
api.SVGAnimationElement.beginElement 📋Safari6/8/2009 Edge1/15/20203873
api.SVGAnimationElement.beginElementAt 📋Safari6/8/2009 Edge1/15/20203873
api.SVGAnimationElement.endElement 📋Safari6/8/2009 Edge1/15/20203873
api.SVGAnimationElement.endElementAt 📋Safari6/8/2009 Edge1/15/20203873
api.SVGAnimationElement.getCurrentTime 📋Safari6/8/2009 Edge1/15/20203873
api.SVGAnimationElement.getSimpleDuration 📋Safari6/8/2009 Edge1/15/20203873
api.SVGAnimationElement.getStartTime 📋Safari6/8/2009 Edge1/15/20203873
api.SVGAnimationElement.requiredExtensions 📋Safari10/26/2007 Edge1/15/20204464
api.SVGAnimationElement.systemLanguage 📋Safari10/26/2007 Edge1/15/20204464
api.SVGAnimationElement.targetElement 📋Safari6/8/2009 Edge1/15/20203873
api.SVGFEDropShadowElement 📋Safari7/25/2012 Edge1/15/20202730
api.SVGFEDropShadowElement.dx 📋Safari7/25/2012 Edge1/15/20202730
api.SVGFEDropShadowElement.dy 📋Safari7/25/2012 Edge1/15/20202730
api.SVGFEDropShadowElement.height 📋Safari7/25/2012 Edge1/15/20202730
api.SVGFEDropShadowElement.in1 📋Safari7/25/2012 Edge1/15/20202730
api.SVGFEDropShadowElement.result 📋Safari7/25/2012 Edge1/15/20202730
api.SVGFEDropShadowElement.setStdDeviation 📋Safari7/25/2012 Edge1/15/20202730
api.SVGFEDropShadowElement.stdDeviationX 📋Safari7/25/2012 Edge1/15/20202730
api.SVGFEDropShadowElement.stdDeviationY 📋Safari7/25/2012 Edge1/15/20202730
api.SVGFEDropShadowElement.width 📋Safari7/25/2012 Edge1/15/20202730
api.SVGFEDropShadowElement.x 📋Safari7/25/2012 Edge1/15/20202730
api.SVGFEDropShadowElement.y 📋Safari7/25/2012 Edge1/15/20202730
api.SVGGeometryElement 📋Firefox4/19/2017 Edge1/15/20201001
Chrome: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Chrome Android: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Edge: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Firefox: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Firefox for Android: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Internet Explorer: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Opera: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Opera Android: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Safari: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Safari on iOS: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.Samsung Internet: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.WebView Android: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.WebView on iOS: The SVGGeometryElement interface itself is not present, but some of its members are available on the SVGPathElement interface.
api.SVGGeometryElement.getPointAtLength 📋Firefox6/26/2018 Edge1/15/2020568
Chrome: Only supported for SVGPathElement, not all SVGGeometryElement objects.Chrome Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Edge: Only supported for SVGPathElement, not all SVGGeometryElement objects.Firefox: Only supported for SVGPathElement, not all SVGGeometryElement objects.Firefox for Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Internet Explorer: Only supported for SVGPathElement, not all SVGGeometryElement objects.Opera: Only supported for SVGPathElement, not all SVGGeometryElement objects.Opera Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Safari: Only supported for SVGPathElement, not all SVGGeometryElement objects.Safari on iOS: Only supported for SVGPathElement, not all SVGGeometryElement objects.Samsung Internet: Only supported for SVGPathElement, not all SVGGeometryElement objects.WebView Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.WebView on iOS: Only supported for SVGPathElement, not all SVGGeometryElement objects.
api.SVGGeometryElement.getTotalLength 📋Firefox6/26/2018 Edge1/15/2020568
Chrome: Only supported for SVGPathElement, not all SVGGeometryElement objects.Chrome Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Edge: Only supported for SVGPathElement, not all SVGGeometryElement objects.Firefox: Only supported for SVGPathElement, not all SVGGeometryElement objects.Firefox for Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Internet Explorer: Only supported for SVGPathElement, not all SVGGeometryElement objects.Opera: Only supported for SVGPathElement, not all SVGGeometryElement objects.Opera Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Safari: Only supported for SVGPathElement, not all SVGGeometryElement objects.Safari on iOS: Only supported for SVGPathElement, not all SVGGeometryElement objects.Samsung Internet: Only supported for SVGPathElement, not all SVGGeometryElement objects.WebView Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.WebView on iOS: Only supported for SVGPathElement, not all SVGGeometryElement objects.
api.SVGGeometryElement.isPointInFill 📋Safari9/17/2018 Edge1/15/2020485
Chrome: The element this method is called for must be in the DOM; otherwise, this method will always return false.Chrome Android: The element this method is called for must be in the DOM; otherwise, this method will always return false.Edge: The element this method is called for must be in the DOM; otherwise, this method will always return false.Quest Browser: The element this method is called for must be in the DOM; otherwise, this method will always return false.Opera: The element this method is called for must be in the DOM; otherwise, this method will always return false.Opera Android: The element this method is called for must be in the DOM; otherwise, this method will always return false.WebView Android: The element this method is called for must be in the DOM; otherwise, this method will always return false.
api.SVGGeometryElement.isPointInStroke 📋Safari9/17/2018 Edge1/15/2020485
Chrome: The element this method is called for must be in the DOM; otherwise, this method will always return false.Chrome Android: The element this method is called for must be in the DOM; otherwise, this method will always return false.Edge: The element this method is called for must be in the DOM; otherwise, this method will always return false.Quest Browser: The element this method is called for must be in the DOM; otherwise, this method will always return false.Opera: The element this method is called for must be in the DOM; otherwise, this method will always return false.Opera Android: The element this method is called for must be in the DOM; otherwise, this method will always return false.WebView Android: The element this method is called for must be in the DOM; otherwise, this method will always return false.
api.SVGGeometryElement.pathLength 📋Firefox6/26/2018 Edge1/15/2020568
Chrome: Only supported for SVGPathElement, not all SVGGeometryElement objects.Chrome Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Firefox: Only supported for SVGPathElement, not all SVGGeometryElement objects.Firefox for Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Opera: Only supported for SVGPathElement, not all SVGGeometryElement objects.Opera Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.Safari: Only supported for SVGPathElement, not all SVGGeometryElement objects.Safari on iOS: Only supported for SVGPathElement, not all SVGGeometryElement objects.Samsung Internet: Only supported for SVGPathElement, not all SVGGeometryElement objects.WebView Android: Only supported for SVGPathElement, not all SVGGeometryElement objects.WebView on iOS: Only supported for SVGPathElement, not all SVGGeometryElement objects.
api.SVGMPathElement 📋Firefox3/22/2011 Edge1/15/20203221
api.SVGMPathElement.href 📋Firefox3/22/2011 Edge1/15/20203221
api.SVGPathElement.getPointAtLength 📋Firefox11/29/2005 Edge1/15/20205160
api.SVGPathElement.getTotalLength 📋Firefox11/29/2005 Edge1/15/20205160
api.SVGPathElement.pathLength 📋Firefox11/29/2005 Edge1/15/20205160
api.SVGRadialGradientElement.fr 📋Safari10/22/2013 Edge1/15/20202276
api.SVGSVGElement.animationsPaused 📋Firefox11/29/2005 Edge1/15/20205160
api.SVGSetElement 📋Safari10/26/2007 Edge1/15/20204464
api.Screen.availLeft Safari6/23/2003 Edge1/15/20206050
api.Screen.availLeft.relative-multi-screen Safari6/23/2003 Edge1/15/20206050
Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.WebView on iOS: Coordinate origin used is inconsistent/unreliable.
api.Screen.availTop Safari6/23/2003 Edge1/15/20206050
api.Screen.availTop.relative-multi-screen Safari6/23/2003 Edge1/15/20206050
Safari: Coordinate origin used is inconsistent/unreliable.Safari on iOS: Coordinate origin used is inconsistent/unreliable.WebView on iOS: Coordinate origin used is inconsistent/unreliable.
api.Selection.modify 📋Safari4/15/2005 Edge1/15/20205388
api.ServiceWorkerContainer.startMessages 📋Safari4/12/2018 Edge1/15/2020643
api.ShadowRoot 📋Safari9/20/2016 Edge1/15/20201212
api.ShadowRoot.activeElement 📋Safari9/20/2016 Edge1/15/20201212
api.ShadowRoot.elementFromPoint Safari3/27/2017 Edge1/15/20201024
Chrome: Before Chrome 66, this method returned null when the element was a child of a host node. See bug 40537452.Chrome Android: Before Chrome Android 66, this method returned null when the element was a child of a host node. See bug 40537452.Quest Browser: Before Quest Browser 5.0, this method returned null when the element was a child of a host node. See bug 40537452.Opera: Before Opera 53, this method returned null when the element was a child of a host node. See bug 40537452.Opera Android: Before Opera Android 47, this method returned null when the element was a child of a host node. See bug 40537452.Samsung Internet: Before Samsung Internet 9.0, this method returned null when the element was a child of a host node. See bug 40537452.WebView Android: Before WebView Android 66, this method returned null when the element was a child of a host node. See bug 40537452.
api.ShadowRoot.elementsFromPoint Safari4/12/2018 Edge1/15/2020643
Chrome: Before Chrome 66, this method returned null when the element was a child of a host node. See bug 40537452.Chrome Android: Before Chrome Android 66, this method returned null when the element was a child of a host node. See bug 40537452.Quest Browser: Before Quest Browser 5.0, this method returned null when the element was a child of a host node. See bug 40537452.Samsung Internet: Before Samsung Internet 9.0, this method returned null when the element was a child of a host node. See bug 40537452.WebView Android: Before WebView Android 66, this method returned null when the element was a child of a host node. See bug 40537452.
api.ShadowRoot.host 📋Safari9/20/2016 Edge1/15/20201212
api.ShadowRoot.innerHTML 📋Safari9/20/2016 Edge1/15/20201212
api.ShadowRoot.mode 📋Safari3/27/2017 Edge1/15/20201024
api.ShadowRoot.pointerLockElement 📋Safari3/27/2017 Edge1/15/20201024
api.ShadowRoot.styleSheets 📋Firefox10/23/2018 Edge1/15/2020449
api.SourceBuffer.changeType 📋Firefox10/23/2018 Edge1/15/2020449
Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SubtleCrypto.decrypt 📋Safari10/22/2013 Edge1/15/20202276
Deno: Not supported: AES-CTR, AES-GCM.Deno: Not supported: AES-CTR, AES-CBC, AES-GCM.Edge: Not supported: AES-CTR.Internet Explorer: Returns CryptoOperation instead of Promise
api.SubtleCrypto.deriveBits 📋Firefox12/1/2014 Edge1/15/20201871
Deno: Not supported: ECDH.Edge: Not supported: ECDH.Edge: Not supported: HKDF, PBKDF2.Node.js: Supports: NODE-DHNode.js: Supports: NODE-SCRYPT
api.SubtleCrypto.deriveKey 📋Firefox12/1/2014 Edge1/15/20201871
Edge: Not supported: ECDH.Edge: Not supported: HKDF, PBKDF2.Node.js: Supports: NODE-DHNode.js: Supports: NODE-SCRYPT
api.SubtleCrypto.deriveKey.derivedKeyAlgorithm_option_aes 📋Firefox12/1/2014 Edge1/15/20201871
api.SubtleCrypto.deriveKey.derivedKeyAlgorithm_option_hmac 📋Firefox12/1/2014 Edge1/15/20201871
api.SubtleCrypto.digest 📋Safari10/22/2013 Edge1/15/20202276
Chrome: Before version 41, Chrome expected the algorithm parameter to be an object.Chrome Android: Before version 41, Chrome Android expected the algorithm parameter to be an object.Edge: Not supported: SHA-1.Internet Explorer: Returns CryptoOperation instead of PromiseOpera: Before version 28, Opera expected the algorithm parameter to be an object.Opera Android: Before version 28, Opera Android expected the algorithm parameter to be an object.Samsung Internet: Before version 4.0, Samsung Internet expected the algorithm parameter to be an object.WebView Android: Before version 41, WebView Android expected the algorithm parameter to be an object.
api.SubtleCrypto.encrypt 📋Safari10/22/2013 Edge1/15/20202276
Deno: Not supported: AES-CTR, AES-GCM.Deno: Not supported: AES-CTR, AES-CBC, AES-GCM.Edge: Not supported: AES-CTR.Internet Explorer: Returns CryptoOperation instead of Promise
api.SubtleCrypto.exportKey 📋Safari10/22/2013 Edge1/15/20202276
Deno: Not supported: ECDSA, ECDH.Deno: Not supported: ECDSA, ECDH, AES-CTR, AES-CBC, AES-GCM, AES-KW.Edge: Not supported: RSA-PSS, ECDSA, ECDH.Edge: Not supported: AES-CTR.Internet Explorer: Returns KeyOperation instead of PromiseNode.js: Supports: NODE-DSANode.js: Supports: NODE-DHNode.js: Supports: NODE-SCRYPT
api.SubtleCrypto.generateKey 📋Safari10/22/2013 Edge1/15/20202276
Deno: Not supported: ECDSA P-521, ECDH P-521.Deno: Not supported: RSA-OAEP, ECDSA P-521, ECDH, AES-CTR, AES-CBC, AES-GCM, AES-KW.Edge: Not supported: RSA-PSS, ECDSA, ECDH.Edge: Not supported: AES-CTR.Internet Explorer: Returns KeyOperation instead of PromiseNode.js: Supports: NODE-DSANode.js: Supports: NODE-DH
api.SubtleCrypto.importKey 📋Safari10/22/2013 Edge1/15/20202276
Deno: Not supported: ECDH P-521.Deno: Not supported: ECDH.Deno: Not supported: AES-CTR, AES-CBC, AES-GCM, AES-KW.Edge: Not supported: RSA-PSS, ECDSA, ECDH.Edge: Not supported: AES-CTR, HKDF, PBKDF2.Internet Explorer: Returns KeyOperation instead of PromiseNode.js: Supports: NODE-DSANode.js: Supports: NODE-DHNode.js: Supports: NODE-SCRYPT
api.SubtleCrypto.importKey.ECDH 📋Safari10/22/2013 Edge1/15/20202276
Deno: P-384 supported. Not supported: P-256, P-521.
api.SubtleCrypto.importKey.ECDSA 📋Safari10/22/2013 Edge1/15/20202276
Deno: P-384 supported. Not supported: P-256, P-521.
api.SubtleCrypto.sign 📋Safari10/22/2013 Edge1/15/20202276
Edge: Not supported: RSA-PSS, ECDSA.Internet Explorer: Returns CryptoOperation instead of PromiseNode.js: Supports: NODE-DSA
api.SubtleCrypto.unwrapKey 📋Safari10/22/2013 Edge1/15/20202276
Edge: Not supported: AES-CTR.Internet Explorer: Returns KeyOperation instead of PromiseNode.js: Supports: NODE-DSANode.js: Supports: NODE-DH
api.SubtleCrypto.verify 📋Safari10/22/2013 Edge1/15/20202276
Deno: Not supported: ECDSA, HMAC.Edge: Not supported: RSA-PSS, ECDSA.Internet Explorer: Returns CryptoOperation instead of PromiseNode.js: Supports: NODE-DSA
api.SubtleCrypto.worker_support Firefox8/2/2016 Edge1/15/20201261
api.SubtleCrypto.wrapKey 📋Safari10/22/2013 Edge1/15/20202276
Edge: Not supported: AES-CTR.Internet Explorer: Returns KeyOperation instead of Promise
api.Text.assignedSlot 📋Safari9/20/2016 Edge1/15/20201212
api.TextDecoder 📋Firefox2/19/2013 Edge1/15/20202521
Firefox: Implemented a slightly different version of the spec.Firefox for Android: Implemented a slightly different version of the spec.Node.js: Available as a part of the util module.
api.TextDecoder.TextDecoder 📋Firefox2/19/2013 Edge1/15/20202521
Firefox: Implemented a slightly different version of the spec.Firefox for Android: Implemented a slightly different version of the spec.
api.TextDecoder.decode 📋Firefox2/19/2013 Edge1/15/20202521
Deno: Before Deno 1.11, passing option.stream is not supported and results in an error being thrown.Firefox: Implemented a slightly different version of the spec.Firefox for Android: Implemented a slightly different version of the spec.
api.TextDecoder.encoding 📋Firefox2/19/2013 Edge1/15/20202521
Firefox: Implemented a slightly different version of the spec.Firefox for Android: Implemented a slightly different version of the spec.
api.TextDecoder.fatal 📋Firefox2/24/2015 Edge1/15/20201786
api.TextDecoder.ignoreBOM 📋Safari3/27/2017 Edge1/15/20201024
api.TextDecoder.worker_support Firefox4/2/2013 Edge1/15/20202479
api.TextEncoder 📋Firefox1/8/2013 Edge1/15/20202563
Node.js: Available as a part of the util module.
api.TextEncoder.TextEncoder 📋Firefox1/8/2013 Edge1/15/20202563
api.TextEncoder.encode 📋Firefox1/8/2013 Edge1/15/20202563
api.TextEncoder.encoding 📋Firefox1/8/2013 Edge1/15/20202563
api.TextEncoder.worker_support Firefox4/2/2013 Edge1/15/20202479
api.TransitionEvent.pseudoElement 📋Safari7/25/2012 Edge1/15/20202730
api.UIEvent.which 📋Safari6/23/2003 Edge1/15/20206050
Chrome: When selecting an autocomplete suggestion, a keydown event fires where the event's which property is undefined. See bug 41425904.Chrome Android: When selecting an autocomplete suggestion, a keydown event fires where the event's which property is undefined. See bug 41425904.Edge: Only supported for KeyboardEvent and MouseEvent, not all UIEvent objects.Firefox: On mousemove events, the which property is incorrectly always set to 1.Firefox for Android: On mousemove events, the which property is incorrectly always set to 1.Internet Explorer: Only supported for KeyboardEvent and MouseEvent, not all UIEvent objects.Quest Browser: When selecting an autocomplete suggestion, a keydown event fires where the event's which property is undefined. See bug 41425904.Opera: Only supported for KeyboardEvent and MouseEvent, not all UIEvent objects.Opera Android: Only supported for KeyboardEvent and MouseEvent, not all UIEvent objects.Samsung Internet: When selecting an autocomplete suggestion, a keydown event fires where the event's which property is undefined. See bug 41425904.WebView Android: When selecting an autocomplete suggestion, a keydown event fires where the event's which property is undefined. See bug 41425904.
api.VTTCue.VTTCue 📋Firefox7/22/2014 Edge1/15/20202003
api.VTTCue.align 📋Safari7/25/2012 Edge1/15/20202730
api.VTTCue.line 📋Safari7/25/2012 Edge1/15/20202730
api.VTTCue.position 📋Safari7/25/2012 Edge1/15/20202730
api.VTTCue.size 📋Safari7/25/2012 Edge1/15/20202730
api.VTTCue.snapToLines 📋Safari7/25/2012 Edge1/15/20202730
api.VTTCue.vertical 📋Safari7/25/2012 Edge1/15/20202730
api.VideoTrack 📋Safari10/22/2013 Edge1/15/20202276
api.VideoTrack.id 📋Safari10/22/2013 Edge1/15/20202276
api.VideoTrack.kind 📋Safari10/22/2013 Edge1/15/20202276
api.VideoTrack.label 📋Safari10/22/2013 Edge1/15/20202276
api.VideoTrack.language 📋Safari10/22/2013 Edge1/15/20202276
api.VideoTrack.selected 📋Safari10/22/2013 Edge1/15/20202276
api.VideoTrackList 📋Safari10/22/2013 Edge1/15/20202276
api.VideoTrackList.addtrack_event 📋Safari10/22/2013 Edge1/15/20202276
api.VideoTrackList.change_event 📋Safari10/22/2013 Edge1/15/20202276
api.VideoTrackList.getTrackById 📋Safari10/22/2013 Edge1/15/20202276
api.VideoTrackList.length 📋Safari10/22/2013 Edge1/15/20202276
api.VideoTrackList.removetrack_event 📋Safari10/22/2013 Edge1/15/20202276
api.VideoTrackList.selectedIndex 📋Safari10/22/2013 Edge1/15/20202276
api.WEBGL_compressed_texture_astc 📋Firefox4/19/2017 Edge1/15/20201001
api.WEBGL_compressed_texture_astc.getSupportedProfiles 📋Firefox4/19/2017 Edge1/15/20201001
api.Window.customElements 📋Safari3/27/2017 Edge1/15/20201024
api.Window.find Firefox11/9/2004 Edge1/15/20205545
api.Window.languagechange_event 📋Firefox9/2/2014 Edge1/15/20201961
api.Window.rejectionhandled_event 📋Safari9/19/2017 Edge1/15/2020848
api.Window.scroll.options_left_parameter Firefox2/24/2015 Edge1/15/20201786
api.Window.scroll.options_top_parameter Firefox2/24/2015 Edge1/15/20201786
api.Window.scrollBy.options_left_parameter Firefox2/24/2015 Edge1/15/20201786
api.Window.scrollBy.options_top_parameter Firefox2/24/2015 Edge1/15/20201786
api.Window.scrollTo.options_left_parameter Firefox2/24/2015 Edge1/15/20201786
api.Window.scrollTo.options_top_parameter Firefox2/24/2015 Edge1/15/20201786
api.Window.unhandledrejection_event 📋Safari9/19/2017 Edge1/15/2020848
Firefox: event.preventDefault() does not prevent Firefox from logging the error message in the console, see bug 1642147.Firefox for Android: event.preventDefault() does not prevent Firefox for Android from logging the error message in the console, see bug 1642147.
api.WorkerGlobalScope.rejectionhandled_event 📋Safari9/19/2017 Edge1/15/2020848
api.WorkerGlobalScope.unhandledrejection_event 📋Safari9/19/2017 Edge1/15/2020848
api.XMLHttpRequest.getAllResponseHeaders.header_names_lowercase Safari9/19/2017 Edge1/15/2020848
api.XMLHttpRequest.responseType.json_value Firefox1/31/2012 Edge1/15/20202906
api.console.countReset_static 📋Firefox9/5/2018 Edge1/15/2020497
api.console.timeLog_static 📋Firefox9/5/2018 Edge1/15/2020497
api.crypto.worker_support Firefox8/2/2016 Edge1/15/20201261
api.fetch.blob_data_support Firefox7/2/2015 Edge1/15/20201658
api.fetch.init_referrerPolicy_parameter Firefox3/7/2017 Edge1/15/20201044
api.queueMicrotask 📋Safari3/25/2019 Edge1/15/2020296
javascript.builtins.Array.@@species 📋Firefox8/2/2016 Edge1/15/20201261
javascript.builtins.Array.flat 📋Firefox9/5/2018 Edge1/15/2020497
javascript.builtins.Array.flatMap 📋Firefox9/5/2018 Edge1/15/2020497
javascript.builtins.Array.sort.stable_sorting Firefox6/17/2008 Edge1/15/20204229
javascript.builtins.Array.toLocaleString.locales_parameter Safari10/22/2013 Edge1/15/20202276
Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Array.toLocaleString.options_parameter Safari10/22/2013 Edge1/15/20202276
javascript.builtins.AsyncGenerator 📋Firefox8/8/2017 Edge1/15/2020890
javascript.builtins.AsyncGenerator.next 📋Firefox8/8/2017 Edge1/15/2020890
javascript.builtins.AsyncGenerator.return 📋Firefox8/8/2017 Edge1/15/2020890
javascript.builtins.AsyncGenerator.throw 📋Firefox8/8/2017 Edge1/15/2020890
javascript.builtins.AsyncGeneratorFunction 📋Firefox8/8/2017 Edge1/15/2020890
javascript.builtins.AsyncGeneratorFunction.AsyncGeneratorFunction 📋Firefox8/8/2017 Edge1/15/2020890
javascript.builtins.AsyncIterator 📋Firefox11/14/2017 Edge1/15/2020792
javascript.builtins.AsyncIterator.@@asyncIterator 📋Firefox11/14/2017 Edge1/15/2020792
javascript.builtins.Function.name.inferred_names Safari9/20/2016 Edge1/15/20201212
Edge: Names for functions defined in a dictionary are properly assigned; however, anonymous functions defined on a var/let variable assignment have blank names.
javascript.builtins.Intl.Collator.Collator.options_ignorePunctuation_parameter Firefox4/29/2014 Edge1/15/20202087
javascript.builtins.Intl.Collator.Collator.options_localeMatcher_parameter Firefox4/29/2014 Edge1/15/20202087
javascript.builtins.Intl.Collator.Collator.options_numeric_parameter Firefox4/29/2014 Edge1/15/20202087
javascript.builtins.Intl.Collator.Collator.options_sensitivity_parameter Firefox4/29/2014 Edge1/15/20202087
javascript.builtins.Intl.Collator.Collator.options_usage_parameter Firefox4/29/2014 Edge1/15/20202087
javascript.builtins.JSON.json_superset Firefox9/5/2018 Edge1/15/2020497
javascript.builtins.JSON.stringify.well_formed_stringify Firefox12/11/2018 Edge1/15/2020400
javascript.builtins.Object.fromEntries 📋Firefox10/23/2018 Edge1/15/2020449
javascript.builtins.Promise.@@species 📋Firefox8/2/2016 Edge1/15/20201261
javascript.builtins.Promise.allSettled 📋Safari9/19/2019 Edge1/15/2020118
javascript.builtins.Proxy.handler.getPrototypeOf 📋Firefox9/20/2016 Edge1/15/20201212
javascript.builtins.RegExp.@@matchAll 📋Firefox5/21/2019 Edge1/15/2020239
javascript.builtins.RegExp.@@replace 📋Firefox9/20/2016 Edge1/15/20201212
javascript.builtins.RegExp.@@split 📋Firefox9/20/2016 Edge1/15/20201212
javascript.builtins.RegExp.flags 📋Firefox3/31/2015 Edge1/15/20201751
javascript.builtins.String.matchAll 📋Firefox5/21/2019 Edge1/15/2020239
javascript.builtins.String.trimEnd 📋Firefox6/26/2018 Edge1/15/2020568
javascript.builtins.String.trimStart 📋Firefox6/26/2018 Edge1/15/2020568
javascript.builtins.Symbol.asyncIterator 📋Firefox11/14/2017 Edge1/15/2020792
javascript.builtins.Symbol.description 📋Firefox10/23/2018 Edge1/15/2020449
Safari: No support for an undefined description.Safari on iOS: No support for an undefined description.WebView on iOS: No support for an undefined description.
javascript.builtins.Symbol.match 📋Firefox8/11/2015 Edge1/15/20201618
javascript.builtins.Symbol.matchAll 📋Firefox5/21/2019 Edge1/15/2020239
javascript.builtins.Symbol.replace 📋Firefox9/20/2016 Edge1/15/20201212
javascript.builtins.Symbol.search 📋Firefox9/20/2016 Edge1/15/20201212
javascript.builtins.Symbol.split 📋Firefox9/20/2016 Edge1/15/20201212
javascript.builtins.globalThis 📋Firefox1/29/2019 Edge1/15/2020351
javascript.functions.method_definitions.async_generator_methods Firefox11/14/2017 Edge1/15/2020792
javascript.functions.rest_parameters.destructuring Safari9/20/2016 Edge1/15/20201212
javascript.grammar.numeric_separators 📋Safari9/19/2019 Edge1/15/2020118
javascript.grammar.template_literals.template_literal_revision Firefox4/19/2017 Edge1/15/20201001
javascript.operators.async_generator_function 📋Firefox11/14/2017 Edge1/15/2020792
javascript.operators.destructuring.rest_in_objects Firefox8/8/2017 Edge1/15/2020890
javascript.operators.generator_function.trailing_comma Safari9/20/2016 Edge1/15/20201212
javascript.operators.import 📋Safari4/12/2018 Edge1/15/2020643
Deno: Bundled Deno applications (using deno compile) do not support dynamic importsNode.js: Dynamic import can be used in either CommonJS or ES module files, to import either CommonJS or ES module files. See Node's ECMAScript Modules documentation for more details.Node.js: Dynamic import can be used in either CommonJS or ES module files, to import either CommonJS or ES module files. See Node's ECMAScript Modules documentation for more details.
javascript.operators.import_meta 📋Safari4/12/2018 Edge1/15/2020643
javascript.operators.object_initializer.spread_properties Firefox8/8/2017 Edge1/15/2020890
javascript.operators.spread.spread_in_object_literals 📋Firefox8/8/2017 Edge1/15/2020890
javascript.statements.async_generator_function 📋Firefox11/14/2017 Edge1/15/2020792
javascript.statements.for_await_of 📋Firefox11/14/2017 Edge1/15/2020792
javascript.statements.try_catch.optional_catch_binding Firefox1/23/2018 Edge1/15/2020722
api.MediaStream.removetrack_event 📋Edge7/29/2015 Firefox1/7/20201623
Firefox: Before Firefox 72, the event handler was exposed but had no effect.Firefox for Android: Before Firefox for Android 79, the event handler was exposed but had no effect.

2019/10

API First Browser Date Last Browser Date Days Notes
api.Document.all 📋Edge7/29/2015 Firefox10/22/20191546
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.captureEvents 📋Edge7/29/2015 Firefox10/22/20191546
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.clear 📋Edge7/29/2015 Firefox10/22/20191546
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.releaseEvents 📋Edge7/29/2015 Firefox10/22/20191546
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.MediaStreamTrack.applyConstraints.groupId_constraint 📋Edge7/29/2015 Firefox10/22/20191546

2019/9

API First Browser Date Last Browser Date Days Notes
api.AuthenticatorAssertionResponse 📋Firefox5/9/2018 Safari9/19/2019498
Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens.
api.AuthenticatorAssertionResponse.authenticatorData 📋Firefox5/9/2018 Safari9/19/2019498
Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens.
api.AuthenticatorAssertionResponse.signature 📋Firefox5/9/2018 Safari9/19/2019498
Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens.
api.AuthenticatorAssertionResponse.userHandle 📋Firefox5/9/2018 Safari9/19/2019498
Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens.
api.AuthenticatorAttestationResponse 📋Firefox5/9/2018 Safari9/19/2019498
Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens.
api.AuthenticatorAttestationResponse.attestationObject 📋Firefox5/9/2018 Safari9/19/2019498
Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens.
api.AuthenticatorResponse 📋Firefox5/9/2018 Safari9/19/2019498
Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens.
api.AuthenticatorResponse.clientDataJSON 📋Firefox5/9/2018 Safari9/19/2019498
Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens.
api.Credential 📋Firefox5/9/2018 Safari9/19/2019498
api.Credential.id 📋Firefox5/9/2018 Safari9/19/2019498
api.Credential.type 📋Firefox5/9/2018 Safari9/19/2019498
api.CredentialsContainer 📋Firefox5/9/2018 Safari9/19/2019498
api.CredentialsContainer.create 📋Firefox5/9/2018 Safari9/19/2019498
api.CredentialsContainer.create.publicKey_option 📋Firefox5/9/2018 Safari9/19/2019498
api.CredentialsContainer.create.publicKey_option.attestation 📋Firefox5/9/2018 Safari9/19/2019498
api.CredentialsContainer.create.publicKey_option.attestation.direct 📋Firefox5/9/2018 Safari9/19/2019498
Firefox for Android: credentialCreationData.attestationConveyancePreferenceOption value "direct" is not supported. See https://bugzil.la/1550164
api.CredentialsContainer.create.publicKey_option.attestation.enterprise 📋Firefox5/9/2018 Safari9/19/2019498
Firefox for Android: credentialCreationData.attestationConveyancePreferenceOption value "enterprise" is not supported. See https://bugzil.la/1550164
api.CredentialsContainer.create.publicKey_option.attestation.indirect 📋Firefox5/9/2018 Safari9/19/2019498
api.CredentialsContainer.create.publicKey_option.attestation.none 📋Firefox5/9/2018 Safari9/19/2019498
api.CredentialsContainer.create.publicKey_option.extensions 📋Firefox5/9/2018 Safari9/19/2019498
api.CredentialsContainer.create.publicKey_option.extensions.appidExclude 📋Firefox5/9/2018 Safari9/19/2019498
api.CredentialsContainer.get 📋Firefox5/9/2018 Safari9/19/2019498
api.CredentialsContainer.get.publicKey_option 📋Firefox5/9/2018 Safari9/19/2019498
api.CredentialsContainer.get.publicKey_option.extensions 📋Firefox5/9/2018 Safari9/19/2019498
api.CredentialsContainer.get.publicKey_option.extensions.appid 📋Firefox5/9/2018 Safari9/19/2019498
api.Element.gotpointercapture_event 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.lostpointercapture_event 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.pointercancel_event 📋Edge7/29/2015 Safari9/19/20191513
api.Element.pointerdown_event 📋Edge7/29/2015 Safari9/19/20191513
api.Element.pointerenter_event 📋Edge7/29/2015 Safari9/19/20191513
api.Element.pointerleave_event 📋Edge7/29/2015 Safari9/19/20191513
api.Element.pointermove_event 📋Edge7/29/2015 Safari9/19/20191513
api.Element.pointerout_event 📋Edge7/29/2015 Safari9/19/20191513
api.Element.pointerover_event 📋Edge7/29/2015 Safari9/19/20191513
api.Element.pointerup_event 📋Edge7/29/2015 Safari9/19/20191513
api.Element.releasePointerCapture 📋Edge7/29/2015 Safari9/19/20191513
api.Element.setPointerCapture 📋Edge7/29/2015 Safari9/19/20191513
Firefox: Before Firefox 82, setPointerCapture() throws InvalidPointerId for an invalid pointerId argument. From Firefox 82, it throws the specified NotFoundError exception. See bug 1662124.Firefox for Android: Before Firefox 82, setPointerCapture() throws InvalidPointerId for an invalid pointerId argument. From Firefox 82, it throws the specified NotFoundError exception. See bug 1662124.
api.HTMLFieldSetElement.elements.type_HTMLCollection Firefox3/22/2011 Safari9/19/20193103
api.HTMLObjectElement.contentWindow 📋Firefox6/25/2013 Safari9/19/20192277
api.Navigator.credentials 📋Firefox5/9/2018 Safari9/19/2019498
api.Navigator.maxTouchPoints 📋Edge7/29/2015 Safari9/19/20191513
api.PointerEvent 📋Edge7/29/2015 Safari9/19/20191513
Internet Explorer: See MSDN Pointer events updates.
api.PointerEvent.PointerEvent 📋Edge7/29/2015 Safari9/19/20191513
Internet Explorer: See MSDN Pointer events updates.
api.PointerEvent.height 📋Edge7/29/2015 Safari9/19/20191513
Internet Explorer: Returns values in screen pixels instead of CSS document pixels.
api.PointerEvent.isPrimary 📋Edge7/29/2015 Safari9/19/20191513
api.PointerEvent.pointerId 📋Edge7/29/2015 Safari9/19/20191513
api.PointerEvent.pointerType 📋Edge7/29/2015 Safari9/19/20191513
Internet Explorer: Returns an integer enumeration instead of a string.
api.PointerEvent.pressure 📋Edge7/29/2015 Safari9/19/20191513
Internet Explorer: Returns 0 instead of 0.5 on hardware that doesn't support pressure.
api.PointerEvent.tiltX 📋Edge7/29/2015 Safari9/19/20191513
api.PointerEvent.tiltY 📋Edge7/29/2015 Safari9/19/20191513
api.PointerEvent.twist 📋Firefox3/13/2018 Safari9/19/2019555
api.PointerEvent.width 📋Edge7/29/2015 Safari9/19/20191513
Internet Explorer: Returns values in screen pixels instead of CSS document pixels.
api.PublicKeyCredential 📋Firefox5/9/2018 Safari9/19/2019498
Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens.
api.PublicKeyCredential.getClientExtensionResults 📋Firefox5/9/2018 Safari9/19/2019498
Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens.
api.PublicKeyCredential.isUserVerifyingPlatformAuthenticatorAvailable_static 📋Firefox5/9/2018 Safari9/19/2019498
Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens.
api.PublicKeyCredential.rawId 📋Firefox5/9/2018 Safari9/19/2019498
Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens.
api.PublicKeyCredential.response 📋Firefox5/9/2018 Safari9/19/2019498
Firefox: Only supports USB U2F tokens.Firefox for Android: Only supports USB U2F tokens.
api.Window.afterprint_event 📋Firefox8/16/2011 Safari9/19/20192956
api.Window.beforeprint_event 📋Firefox8/16/2011 Safari9/19/20192956
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_hourCycle_parameter Firefox1/23/2018 Safari9/19/2019604
javascript.builtins.Intl.NumberFormat.formatToParts 📋Edge7/29/2015 Safari9/19/20191513
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the NumberFormat() constructor for more details.
javascript.builtins.Intl.PluralRules 📋Firefox1/23/2018 Safari9/19/2019604
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the PluralRules() constructor for more details.
javascript.builtins.Intl.PluralRules.PluralRules 📋Firefox1/23/2018 Safari9/19/2019604
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the PluralRules instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Intl.PluralRules.resolvedOptions 📋Firefox1/23/2018 Safari9/19/2019604
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the PluralRules() constructor for more details.
javascript.builtins.Intl.PluralRules.select 📋Firefox1/23/2018 Safari9/19/2019604
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the PluralRules() constructor for more details.
javascript.builtins.Intl.PluralRules.supportedLocalesOf 📋Firefox1/23/2018 Safari9/19/2019604
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the PluralRules() constructor for more details.
api.Document.alinkColor 📋Edge7/29/2015 Firefox9/3/20191497
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.bgColor 📋Edge7/29/2015 Firefox9/3/20191497
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.close 📋Edge7/29/2015 Firefox9/3/20191497
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.designMode 📋Edge7/29/2015 Firefox9/3/20191497
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.domain 📋Safari6/23/2003 Firefox9/3/20195916
Chrome: Since Chrome 115, setting domain has no effect, unless the website has opted into origin-keyed agent clusters.Chrome Android: Since Chrome Android 115, setting domain has no effect, unless the website has opted into origin-keyed agent clusters.Firefox: From Firefox 62, if the domain cannot be identified, domain returns an empty string instead of null. See bug 819475.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: From Firefox for Android 62, if the domain cannot be identified, domain returns an empty string instead of null. See bug 819475.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Quest Browser: Since Quest Browser false, setting domain has no effect, unless the website has opted into origin-keyed agent clusters.Samsung Internet: Since Samsung Internet 23.0, setting domain has no effect, unless the website has opted into origin-keyed agent clusters.WebView Android: Since WebView Android 115, setting domain has no effect, unless the website has opted into origin-keyed agent clusters.
api.Document.execCommand Safari4/15/2005 Firefox9/3/20195254
Firefox: From Firefox 82, nested calls are not supported (return false). See bug 1634262.Firefox: Before Firefox 89, manipulating the content of <input> and <textarea> elements using Document.execCommand() commands requires workarounds (see bug 1220696).Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: From Firefox for Android 82, nested calls are not supported (return false). See bug 1634262.Firefox for Android: Before Firefox for Android 89, manipulating the content of <input> and <textarea> elements using Document.execCommand() commands requires workarounds (see bug 1220696).Firefox for Android: Only supported for HTMLDocument, not all Document objects.
api.Document.fgColor 📋Edge7/29/2015 Firefox9/3/20191497
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.linkColor 📋Edge7/29/2015 Firefox9/3/20191497
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.open 📋Edge7/29/2015 Firefox9/3/20191497
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.queryCommandEnabled Safari4/29/2005 Firefox9/3/20195240
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox: queryCommandEnabled with arguments cut, copy or paste would throw errors unless the script had special privileges.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Firefox for Android: queryCommandEnabled with arguments cut, copy or paste would throw errors unless the script had special privileges.
api.Document.queryCommandIndeterm Safari4/29/2005 Firefox9/3/20195240
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.
api.Document.queryCommandState Safari4/29/2005 Firefox9/3/20195240
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.
api.Document.queryCommandSupported Safari4/29/2005 Firefox9/3/20195240
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox: The "paste" command is reported as supported when the paste feature is available even if the calling script has insufficient privileges to actually perform the action.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Firefox for Android: The "paste" command is reported as supported when the paste feature is available even if the calling script has insufficient privileges to actually perform the action.
api.Document.queryCommandValue Safari4/29/2005 Firefox9/3/20195240
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.
api.Document.vlinkColor 📋Edge7/29/2015 Firefox9/3/20191497
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.write 📋Edge7/29/2015 Firefox9/3/20191497
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.writeln 📋Edge7/29/2015 Firefox9/3/20191497
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.StaticRange 📋Safari3/27/2017 Firefox9/3/2019890
Firefox: In Firefox, StaticRange can currently only be used by browser-internal code or code with enhanced permissions; it is not yet exposed to the web.
api.StaticRange.collapsed 📋Safari3/27/2017 Firefox9/3/2019890
api.StaticRange.endContainer 📋Safari3/27/2017 Firefox9/3/2019890
api.StaticRange.endOffset 📋Safari3/27/2017 Firefox9/3/2019890
api.StaticRange.startContainer 📋Safari3/27/2017 Firefox9/3/2019890
api.StaticRange.startOffset 📋Safari3/27/2017 Firefox9/3/2019890

2019/7

API First Browser Date Last Browser Date Days Notes
api.CSSStyleSheet.addRule 📋Safari6/23/2003 Firefox7/9/20195860
api.CSSStyleSheet.removeRule 📋Safari10/26/2007 Firefox7/9/20194274
api.CSSStyleSheet.rules 📋Safari6/23/2003 Firefox7/9/20195860
api.Document.cookie 📋Safari6/8/2009 Firefox7/9/20193683
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.HTMLTrackElement.cuechange_event 📋Edge8/2/2016 Firefox7/9/20191071
Chrome: The oncuechange event handler property is not supported.Chrome Android: The oncuechange event handler property is not supported.Opera: The oncuechange event handler property is not supported.Opera Android: The oncuechange event handler property is not supported.Safari: The oncuechange event handler property is not supported.Safari on iOS: The oncuechange event handler property is not supported.Samsung Internet: The oncuechange event handler property is not supported.WebView Android: The oncuechange event handler property is not supported.WebView on iOS: The oncuechange event handler property is not supported.

2019/3

API First Browser Date Last Browser Date Days Notes
api.AbortController 📋Edge10/17/2017 Safari3/25/2019524
Safari: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.Safari on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.WebView on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.
api.AbortController.AbortController 📋Edge10/17/2017 Safari3/25/2019524
Safari: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.Safari on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.WebView on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.
api.AbortController.abort 📋Edge10/17/2017 Safari3/25/2019524
Node.js: The optional reason argument is not supported.Node.js: The optional reason argument is not supported.Safari: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.Safari on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.WebView on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.
api.AbortController.signal 📋Edge10/17/2017 Safari3/25/2019524
Safari: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.Safari on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.WebView on iOS: Even though window.AbortController is defined, it doesn't really abort fetch requests. See bug 174980.
api.DedicatedWorkerGlobalScope.name 📋Firefox8/8/2017 Safari3/25/2019594
api.HTMLDataListElement 📋Firefox3/22/2011 Safari3/25/20192925
api.HTMLDataListElement.options 📋Firefox3/22/2011 Safari3/25/20192925
api.HTMLInputElement.list 📋Firefox3/22/2011 Safari3/25/20192925
api.HTMLMediaElement.encrypted_event 📋Firefox5/12/2015 Safari3/25/20191413
api.HTMLMediaElement.mediaKeys 📋Firefox5/12/2015 Safari3/25/20191413
api.HTMLMediaElement.setMediaKeys 📋Firefox5/12/2015 Safari3/25/20191413
api.IntersectionObserver 📋Edge4/5/2017 Safari3/25/2019719
api.IntersectionObserver.IntersectionObserver 📋Edge4/5/2017 Safari3/25/2019719
Firefox: Before version 96, the constructor throws a DOMException if the options.rootMargin option is passed an empty string (see bug 1738791).
api.IntersectionObserver.disconnect 📋Edge4/5/2017 Safari3/25/2019719
Edge: Available since Windows Insider Preview Build 14986.
api.IntersectionObserver.observe 📋Edge4/5/2017 Safari3/25/2019719
api.IntersectionObserver.root 📋Edge4/5/2017 Safari3/25/2019719
api.IntersectionObserver.rootMargin 📋Edge4/5/2017 Safari3/25/2019719
Safari: rootMargin does not work with <iframe>s.Safari on iOS: rootMargin does not work with <iframe>s.WebView on iOS: rootMargin does not work with <iframe>s.
api.IntersectionObserver.takeRecords 📋Edge4/5/2017 Safari3/25/2019719
Edge: Available since Windows Insider Preview Build 14986.
api.IntersectionObserver.thresholds 📋Edge4/5/2017 Safari3/25/2019719
api.IntersectionObserver.unobserve 📋Edge4/5/2017 Safari3/25/2019719
Edge: Available since Windows Insider Preview Build 14986.
api.IntersectionObserverEntry 📋Edge4/5/2017 Safari3/25/2019719
api.IntersectionObserverEntry.boundingClientRect 📋Edge4/5/2017 Safari3/25/2019719
api.IntersectionObserverEntry.intersectionRatio 📋Edge4/5/2017 Safari3/25/2019719
api.IntersectionObserverEntry.intersectionRect 📋Edge4/5/2017 Safari3/25/2019719
api.IntersectionObserverEntry.isIntersecting 📋Firefox8/8/2017 Safari3/25/2019594
api.IntersectionObserverEntry.rootBounds 📋Edge4/5/2017 Safari3/25/2019719
api.IntersectionObserverEntry.target 📋Edge4/5/2017 Safari3/25/2019719
api.IntersectionObserverEntry.time 📋Edge4/5/2017 Safari3/25/2019719
api.MediaEncryptedEvent 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaEncryptedEvent.MediaEncryptedEvent 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaEncryptedEvent.initData 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaEncryptedEvent.initDataType 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeyMessageEvent 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeyMessageEvent.MediaKeyMessageEvent 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeyMessageEvent.message 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeyMessageEvent.messageType 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySession 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySession.close 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySession.closed 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySession.expiration 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySession.generateRequest 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySession.keyStatuses 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySession.load 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySession.remove 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySession.sessionId 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySession.update 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeyStatusMap 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeyStatusMap.@@iterator Firefox3/8/2016 Safari3/25/20191112
api.MediaKeyStatusMap.entries Firefox5/12/2015 Safari3/25/20191413
api.MediaKeyStatusMap.forEach Edge11/12/2015 Safari3/25/20191229
api.MediaKeyStatusMap.get 📋Edge11/12/2015 Safari3/25/20191229
api.MediaKeyStatusMap.has 📋Edge11/12/2015 Safari3/25/20191229
api.MediaKeyStatusMap.keys Firefox5/12/2015 Safari3/25/20191413
api.MediaKeyStatusMap.size 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeyStatusMap.values Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySystemAccess 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySystemAccess.createMediaKeys 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySystemAccess.getConfiguration 📋Edge11/12/2015 Safari3/25/20191229
Firefox: Before Firefox 50, the returned object has neither a distinctiveIdentifier nor a persistentState property.Firefox for Android: Before Firefox for Android 50, the returned object has neither a distinctiveIdentifier nor a persistentState property.
api.MediaKeySystemAccess.keySystem 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeys 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeys.createSession 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeys.setServerCertificate 📋Firefox5/12/2015 Safari3/25/20191413
api.MouseEvent.getModifierState 📋Firefox8/28/2012 Safari3/25/20192400
api.Navigator.requestMediaKeySystemAccess 📋Firefox5/12/2015 Safari3/25/20191413
Chrome: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.Chrome: The function does not exist in insecure contexts. This was not enforced until Chrome 58.Chrome Android: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.Chrome Android: The function does not exist in insecure contexts. This was not enforced until Chrome Android 58.Firefox: Starting in Firefox 55, if neither audioCapabilities nor videoCapabilities is specified in supportedConfigurations, a warning is output to the web console.Firefox: In addition, starting in Firefox 55, if in supportedConfigurations, either audioCapabilities's or videoCapabilities's contentType value doesn't specify a "codecs" substring to define allowed codecs within the media wrapper, a warning is output to the web console. See note below table for example and correction.Firefox: In the future, if neither audioCapabilities nor videoCapabilities is specified in the supportedConfigurations, a NotSupported exception will be thrown.Firefox for Android: Starting in Firefox for Android 55, if neither audioCapabilities nor videoCapabilities is specified in supportedConfigurations, a warning is output to the web console.Firefox for Android: In addition, starting in Firefox for Android 55, if in supportedConfigurations, either audioCapabilities's or videoCapabilities's contentType value doesn't specify a "codecs" substring to define allowed codecs within the media wrapper, a warning is output to the web console. See note below table for example and correction.Firefox for Android: In the future, if neither audioCapabilities nor videoCapabilities is specified in the supportedConfigurations, a NotSupported exception will be thrown.Quest Browser: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.Quest Browser: The function does not exist in insecure contexts. This was not enforced until Quest Browser 5.0.Opera: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.Opera: The function does not exist in insecure contexts. This was not enforced until Opera 45.Opera Android: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.Opera Android: The function does not exist in insecure contexts. This was not enforced until Opera 45.Samsung Internet: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.Samsung Internet: The function does not exist in insecure contexts. This was not enforced until Samsung Internet 7.0.WebView Android: The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities, and that said parameters include a codec string.WebView Android: The function does not exist in insecure contexts. This was not enforced until version 58.
api.RTCRtpReceiver.getContributingSources 📋Edge7/29/2015 Safari3/25/20191335
api.RTCRtpReceiver.getContributingSources.audio_tracks_supported Edge7/29/2015 Safari3/25/20191335
api.RTCRtpReceiver.getStats 📋Edge11/12/2015 Safari3/25/20191229
api.RTCRtpSender.getStats 📋Edge11/12/2015 Safari3/25/20191229
api.Request.credentials.default_same-origin Firefox6/26/2018 Safari3/25/2019272
api.Request.signal 📋Edge10/17/2017 Safari3/25/2019524
api.Worker.Worker.options_name_parameter Firefox8/8/2017 Safari3/25/2019594
api.Event.returnValue 📋Safari6/23/2003 Firefox3/19/20195748
api.Window.event 📋Safari10/24/2003 Firefox3/19/20195625

2019/1

API First Browser Date Last Browser Date Days Notes
api.ByteLengthQueuingStrategy 📋Safari3/27/2017 Firefox1/29/2019673
Node.js: Available as a part of the stream/web module.
api.ByteLengthQueuingStrategy.ByteLengthQueuingStrategy 📋Safari3/27/2017 Firefox1/29/2019673
api.ByteLengthQueuingStrategy.highWaterMark 📋Safari3/27/2017 Firefox1/29/2019673
api.ByteLengthQueuingStrategy.size 📋Safari3/27/2017 Firefox1/29/2019673
api.CountQueuingStrategy 📋Safari3/27/2017 Firefox1/29/2019673
Node.js: Available as a part of the stream/web module.
api.CountQueuingStrategy.CountQueuingStrategy 📋Safari3/27/2017 Firefox1/29/2019673
api.CountQueuingStrategy.highWaterMark 📋Safari3/27/2017 Firefox1/29/2019673
api.CountQueuingStrategy.size 📋Safari3/27/2017 Firefox1/29/2019673
api.HTMLMarqueeElement 📋Safari2/2/2004 Firefox1/29/20195475
Firefox: Before Firefox 65, <marquee> implemented the HTMLDivElement interface.Firefox for Android: Before Firefox for Android 65, <marquee> implemented the HTMLDivElement interface.
api.HTMLMarqueeElement.behavior 📋Safari7/20/2011 Firefox1/29/20192750
api.HTMLMarqueeElement.bgColor 📋Safari7/20/2011 Firefox1/29/20192750
api.HTMLMarqueeElement.direction 📋Safari7/20/2011 Firefox1/29/20192750
api.HTMLMarqueeElement.height 📋Safari7/20/2011 Firefox1/29/20192750
api.HTMLMarqueeElement.hspace 📋Safari7/20/2011 Firefox1/29/20192750
api.HTMLMarqueeElement.loop 📋Safari7/20/2011 Firefox1/29/20192750
api.HTMLMarqueeElement.scrollAmount 📋Safari7/20/2011 Firefox1/29/20192750
api.HTMLMarqueeElement.scrollDelay 📋Safari7/20/2011 Firefox1/29/20192750
api.HTMLMarqueeElement.start 📋Safari2/2/2004 Firefox1/29/20195475
api.HTMLMarqueeElement.stop 📋Safari2/2/2004 Firefox1/29/20195475
api.HTMLMarqueeElement.trueSpeed 📋Safari7/20/2011 Firefox1/29/20192750
api.HTMLMarqueeElement.vspace 📋Safari7/20/2011 Firefox1/29/20192750
api.HTMLMarqueeElement.width 📋Safari7/20/2011 Firefox1/29/20192750
api.ReadableStream 📋Edge8/2/2016 Firefox1/29/2019910
Node.js: Available as a part of the stream/web module.
api.ReadableStream.cancel 📋Edge8/2/2016 Firefox1/29/2019910
api.ReadableStream.getReader 📋Edge8/2/2016 Firefox1/29/2019910
api.ReadableStream.locked 📋Edge8/2/2016 Firefox1/29/2019910
api.Response.body 📋Edge8/2/2016 Firefox1/29/2019910
api.Window.open.once_per_event Edge7/29/2015 Firefox1/29/20191280

2018/12

API First Browser Date Last Browser Date Days Notes
api.Window.screenLeft 📋Safari6/23/2003 Firefox12/11/20185650
api.Window.screenTop 📋Safari6/23/2003 Firefox12/11/20185650

2018/10

API First Browser Date Last Browser Date Days Notes
api.Element.securitypolicyviolation_event 📋Safari9/20/2016 Firefox10/23/2018763
api.Element.toggleAttribute 📋Safari9/17/2018 Firefox10/23/201836
api.SecurityPolicyViolationEvent 📋Safari9/20/2016 Firefox10/23/2018763
api.SecurityPolicyViolationEvent.SecurityPolicyViolationEvent 📋Safari9/20/2016 Firefox10/23/2018763
api.SecurityPolicyViolationEvent.blockedURI 📋Safari9/20/2016 Firefox10/23/2018763
api.SecurityPolicyViolationEvent.columnNumber 📋Safari9/20/2016 Firefox10/23/2018763
api.SecurityPolicyViolationEvent.documentURI 📋Safari9/20/2016 Firefox10/23/2018763
api.SecurityPolicyViolationEvent.effectiveDirective 📋Safari9/20/2016 Firefox10/23/2018763
api.SecurityPolicyViolationEvent.lineNumber 📋Safari9/20/2016 Firefox10/23/2018763
api.SecurityPolicyViolationEvent.originalPolicy 📋Safari9/20/2016 Firefox10/23/2018763
api.SecurityPolicyViolationEvent.referrer 📋Safari9/20/2016 Firefox10/23/2018763
api.SecurityPolicyViolationEvent.sourceFile 📋Safari9/20/2016 Firefox10/23/2018763
api.SecurityPolicyViolationEvent.statusCode 📋Safari9/20/2016 Firefox10/23/2018763
api.SecurityPolicyViolationEvent.violatedDirective 📋Safari9/20/2016 Firefox10/23/2018763
api.WorkerGlobalScope.securitypolicyviolation_event 📋Safari9/20/2016 Firefox10/23/2018763
api.CSSStyleDeclaration.@@iterator Firefox2/24/2015 Edge10/2/20181316
api.DOMTokenList.replace.boolean_value Firefox6/26/2018 Edge10/2/201898
api.DataTransfer.setDragImage 📋Safari6/8/2009 Edge10/2/20183403
api.Element.animationend_event 📋Safari9/30/2015 Edge10/2/20181098
Chrome: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Chrome Android: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Edge: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Firefox: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Firefox for Android: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Internet Explorer: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Quest Browser: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Opera: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Opera Android: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.Samsung Internet: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.WebView Android: The onanimationend event handler property is not supported. To listen to this event, use document.addEventListener('animationend', function() {});.
api.Element.animationiteration_event 📋Safari9/30/2015 Edge10/2/20181098
Chrome: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Chrome Android: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Edge: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Firefox: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Firefox for Android: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Internet Explorer: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Quest Browser: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Opera: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Opera Android: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.Samsung Internet: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.WebView Android: The onanimationiteration event handler property is not supported. To listen to this event, use document.addEventListener('animationiteration', function() {});.
api.Element.animationstart_event 📋Safari9/30/2015 Edge10/2/20181098
Chrome: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Chrome Android: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Edge: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Firefox: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Firefox for Android: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Internet Explorer: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Quest Browser: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Opera: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Opera Android: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.Samsung Internet: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.WebView Android: The onanimationstart event handler property is not supported. To listen to this event, use document.addEventListener('animationstart', function() {});.
api.Element.getAttributeNames 📋Firefox3/8/2016 Edge10/2/2018938
api.Element.transitionend_event 📋Safari10/22/2013 Edge10/2/20181806
Edge: The ontransitionend event handler property is not supported. To listen to this event, use element.addEventListener('transitionend', function() {});.Internet Explorer: The ontransitionend event handler property is not supported. To listen to this event, use element.addEventListener('transitionend', function() {});.
api.File.lastModified 📋Firefox8/28/2012 Edge10/2/20182226
api.FileSystem 📋Firefox11/15/2016 Edge10/2/2018686
Edge: Before Edge 79, this API was only supported in drag-and-drop scenarios using the DataTransferItem.webkitGetAsEntry() method. It was not available for use in file or folder picker panels (such as when you use an <input> element with the HTMLInputElement.webkitdirectory attribute.
api.FileSystem.name 📋Firefox11/15/2016 Edge10/2/2018686
api.FileSystem.root 📋Firefox11/15/2016 Edge10/2/2018686
api.FileSystemDirectoryReader 📋Firefox11/15/2016 Edge10/2/2018686
api.FormData.@@iterator Firefox1/26/2016 Edge10/2/2018980
api.FormData.delete 📋Firefox7/2/2015 Edge10/2/20181188
api.FormData.entries Firefox1/26/2016 Edge10/2/2018980
api.FormData.forEach Firefox6/7/2016 Edge10/2/2018847
api.FormData.get 📋Firefox7/2/2015 Edge10/2/20181188
api.FormData.getAll 📋Firefox7/2/2015 Edge10/2/20181188
api.FormData.has 📋Firefox7/2/2015 Edge10/2/20181188
api.FormData.keys Firefox1/26/2016 Edge10/2/2018980
api.FormData.set 📋Firefox7/2/2015 Edge10/2/20181188
api.FormData.values Firefox1/26/2016 Edge10/2/2018980
api.GeolocationPosition.secure_context_required Safari9/20/2016 Edge10/2/2018742
api.GeolocationPositionError.secure_context_required Safari9/20/2016 Edge10/2/2018742
api.HTMLAnchorElement.relList 📋Firefox6/10/2014 Edge10/2/20181575
api.HTMLAreaElement.relList 📋Firefox6/10/2014 Edge10/2/20181575
api.HTMLButtonElement.labels 📋Safari7/20/2011 Edge10/2/20182631
api.HTMLElement.tabIndex 📋Firefox11/9/2004 Edge10/2/20185075
Edge: Returns incorrect value for elements without an explicit tabindex attribute. See issue 4365703 for details.Internet Explorer: Returns incorrect value for elements without an explicit tabindex attribute. See issue 4365703 for details.
api.HTMLInputElement.labels 📋Safari6/7/2010 Edge10/2/20183039
api.HTMLLabelElement.control 📋Firefox3/22/2011 Edge10/2/20182751
api.HTMLMeterElement.labels 📋Safari7/25/2012 Edge10/2/20182260
api.HTMLObjectElement.reportValidity 📋Firefox9/20/2016 Edge10/2/2018742
api.HTMLOutputElement.labels 📋Safari7/20/2011 Edge10/2/20182631
api.HTMLProgressElement.labels 📋Safari7/25/2012 Edge10/2/20182260
api.HTMLSelectElement.labels 📋Safari7/20/2011 Edge10/2/20182631
api.HTMLTextAreaElement.labels 📋Safari7/20/2011 Edge10/2/20182631
api.Headers.iterate_lexicographically Safari3/27/2017 Edge10/2/2018554
api.IDBObjectStore.name.renaming_through_name_setter Firefox9/20/2016 Edge10/2/2018742
api.MediaDeviceInfo.toJSON 📋Firefox11/3/2015 Edge10/2/20181064
api.MediaStreamAudioDestinationNode 📋Firefox10/29/2013 Edge10/2/20181799
api.MediaStreamAudioDestinationNode.stream 📋Firefox10/29/2013 Edge10/2/20181799
api.PerformanceResourceTiming.secureConnectionStart 📋Firefox1/13/2015 Edge10/2/20181358
api.PerformanceTiming.secureConnectionStart 📋Safari10/16/2014 Edge10/2/20181447
api.RTCRtpTransceiver 📋Safari9/19/2017 Edge10/2/2018378
api.Request.mode.navigate_mode Firefox4/26/2016 Edge10/2/2018889
api.ServiceWorkerRegistration.updateViaCache 📋Firefox11/14/2017 Edge10/2/2018322
api.SpeechSynthesisErrorEvent 📋Safari10/22/2013 Edge10/2/20181806
api.SpeechSynthesisErrorEvent.error 📋Safari10/22/2013 Edge10/2/20181806
api.TextTrack.id 📋Firefox7/22/2014 Edge10/2/20181533
api.TextTrackList.change_event 📋Safari10/22/2013 Edge10/2/20181806
api.TextTrackList.getTrackById 📋Firefox7/22/2014 Edge10/2/20181533
api.TextTrackList.removetrack_event 📋Safari10/22/2013 Edge10/2/20181806
api.origin 📋Firefox6/13/2017 Edge10/2/2018476
javascript.builtins.Intl.Collator.Collator.options_caseFirst_parameter Firefox8/8/2017 Edge10/2/2018420
javascript.builtins.Intl.DateTimeFormat.formatToParts 📋Firefox1/24/2017 Edge10/2/2018616
Chrome: Before version 71, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 71 and later use the specification defined dayPeriod. See bug 41402623.Chrome Android: Before version 71, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 71 and later use the specification defined dayPeriod. See bug 41402623.Node.js: Before version 12.0.0, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 12.0.0 and later use the specification defined dayPeriod. See bug 41402623.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the DateTimeFormat() constructor for more details.Quest Browser: Before version 6.0, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 71 and later use the specification defined dayPeriod. See bug 41402623.Opera: Before version 58, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 58 and later use the specification defined dayPeriod. See bug 41402623.Opera Android: Before version 50, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 50 and later use the specification defined dayPeriod. See bug 41402623.Samsung Internet: Before version 71, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 71 and later use the specification defined dayPeriod. See bug 41402623.WebView Android: Before version 71, formatToParts() returned an object with an incorrectly cased type key of dayperiod. Version 71 and later use the specification defined dayPeriod. See bug 41402623.
javascript.builtins.Promise.finally 📋Firefox1/23/2018 Edge10/2/2018252

2018/9

API First Browser Date Last Browser Date Days Notes
api.CustomEvent.worker_support Firefox8/2/2016 Safari9/17/2018776
api.PerformanceResourceTiming.worker_support Edge4/5/2017 Safari9/17/2018530
api.RTCPeerConnectionIceEvent 📋Firefox9/17/2013 Safari9/17/20181826
api.RTCPeerConnectionIceEvent.RTCPeerConnectionIceEvent 📋Firefox9/17/2013 Safari9/17/20181826
api.RTCPeerConnectionIceEvent.candidate 📋Firefox9/17/2013 Safari9/17/20181826
api.Event.srcElement 📋Safari6/23/2003 Firefox9/5/20185553

2018/6

API First Browser Date Last Browser Date Days Notes
api.Document.anchors 📋Safari6/8/2009 Firefox6/26/20183305
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.applets 📋Safari6/8/2009 Firefox6/26/20183305
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.embeds 📋Edge7/29/2015 Firefox6/26/20181063
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.forms 📋Safari6/8/2009 Firefox6/26/20183305
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.head 📋Safari6/7/2010 Firefox6/26/20182941
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.
api.Document.images 📋Safari6/8/2009 Firefox6/26/20183305
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.links 📋Safari6/8/2009 Firefox6/26/20183305
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.plugins 📋Edge7/29/2015 Firefox6/26/20181063
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.scripts 📋Edge7/29/2015 Firefox6/26/20181063
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Request.destination 📋Edge8/2/2016 Firefox6/26/2018693

2018/5

API First Browser Date Last Browser Date Days Notes
api.Document.body 📋Safari6/23/2003 Firefox5/9/20185434
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.
api.HTMLScriptElement.noModule 📋Safari9/19/2017 Firefox5/9/2018232
api.Navigator.webdriver 📋Edge7/29/2015 Firefox5/9/20181015
api.PerformanceEntry.worker_support Edge4/5/2017 Firefox5/9/2018399
Node.js: Available as a part of the perf_hooks module.
javascript.builtins.Array.values 📋Safari9/30/2015 Firefox5/9/2018952
javascript.statements.export 📋Safari3/27/2017 Firefox5/9/2018408
Node.js: Modules must either have a filename ending in .mjs, or the nearest parent package.json file must contain "type": "module". See Node's ECMAScript Modules documentation for more details.
javascript.statements.export.default 📋Safari3/27/2017 Firefox5/9/2018408
Node.js: Modules must either have a filename ending in .mjs, or the nearest parent package.json file must contain "type": "module". See Node's ECMAScript Modules documentation for more details.
javascript.statements.import 📋Safari3/27/2017 Firefox5/9/2018408
Node.js: Modules must either have a filename ending in .mjs, or the nearest parent package.json file must contain "type": "module". See Node's ECMAScript Modules documentation for more details.Node.js: Modules must either have a filename ending in .mjs, or the nearest parent package.json file must contain "type": "module". See Node's ECMAScript Modules documentation for more details.

2018/4

API First Browser Date Last Browser Date Days Notes
api.CharacterData.after 📋Firefox9/20/2016 Edge4/30/2018587
api.CharacterData.before 📋Firefox9/20/2016 Edge4/30/2018587
api.CharacterData.nextElementSibling 📋Firefox10/29/2013 Edge4/30/20181644
api.CharacterData.previousElementSibling 📋Firefox10/29/2013 Edge4/30/20181644
api.CharacterData.replaceWith 📋Firefox9/20/2016 Edge4/30/2018587
api.Client 📋Firefox1/26/2016 Edge4/30/2018825
api.Client.frameType 📋Firefox1/26/2016 Edge4/30/2018825
api.Client.id 📋Firefox1/26/2016 Edge4/30/2018825
api.Client.postMessage 📋Firefox1/26/2016 Edge4/30/2018825
api.Client.type 📋Firefox6/13/2017 Edge4/30/2018321
api.Client.url 📋Firefox1/26/2016 Edge4/30/2018825
api.Clients 📋Firefox1/26/2016 Edge4/30/2018825
api.Clients.claim 📋Firefox1/26/2016 Edge4/30/2018825
api.Clients.get 📋Firefox3/8/2016 Edge4/30/2018783
api.Clients.matchAll 📋Firefox6/13/2017 Edge4/30/2018321
Chrome: Client objects returned in most recent focus order.Chrome Android: Client objects returned in most recent focus order.Edge: Client objects returned in most recent focus order.Firefox: Before Firefox 54, Client objects were not returned in the most recent focus order as required by the specification.Firefox for Android: Before Firefox for Android 54, Client objects were not returned in the most recent focus order as required by the specification.Quest Browser: Client objects returned in most recent focus order.Samsung Internet: Client objects returned in most recent focus order.WebView Android: Client objects returned in most recent focus order.
api.Clients.matchAll.options_includeUncontrolled_parameter 📋Firefox1/26/2016 Edge4/30/2018825
Chrome: Client objects returned in most recent focus order.Chrome Android: Client objects returned in most recent focus order.Edge: Client objects returned in most recent focus order.Quest Browser: Client objects returned in most recent focus order.Samsung Internet: Client objects returned in most recent focus order.WebView Android: Client objects returned in most recent focus order.
api.Clients.openWindow 📋Firefox1/26/2016 Edge4/30/2018825
Chrome: Before Chrome 43, this method could only open URLs on the same origin.Chrome: Since Chrome 51, URLs may open inside an existing browsing context provided by a standalone web app.Chrome Android: Before Chrome Android 43, this method could only open URLs on the same origin.Chrome Android: Since Chrome Android 51, URLs may open inside an existing browsing context provided by a standalone web app.Quest Browser: Before Quest Browser 5.0, this method could only open URLs on the same origin.Quest Browser: Since Quest Browser 5.0, URLs may open inside an existing browsing context provided by a standalone web app.Samsung Internet: Before Samsung Internet 4.0, this method could only open URLs on the same origin.Samsung Internet: Since Samsung Internet 5.0, URLs may open inside an existing browsing context provided by a standalone web app.WebView Android: Before WebView Android 43, this method could only open URLs on the same origin.WebView Android: Since WebView Android 51, URLs may open inside an existing browsing context provided by a standalone web app.
api.ClipboardEvent.ClipboardEvent 📋Firefox6/25/2013 Edge4/30/20181770
api.DOMTokenList.remove_duplicates Safari9/20/2016 Edge4/30/2018587
api.DOMTokenList.replace 📋Firefox9/20/2016 Edge4/30/2018587
api.DOMTokenList.supports 📋Firefox9/20/2016 Edge4/30/2018587
api.DOMTokenList.value 📋Firefox6/7/2016 Edge4/30/2018692
Chrome: Before Chrome 50, this property was part of the deprecated child DOMSettableTokenList interface.Chrome Android: Before Chrome Android 50, this property was part of the deprecated child DOMSettableTokenList interface.Quest Browser: Before Quest Browser 5.0, this property was part of the deprecated child DOMSettableTokenList interface.Opera: Before Opera 37, this property was part of the deprecated child DOMSettableTokenList interface.Opera Android: Before Opera Android 37, this property was part of the deprecated child DOMSettableTokenList interface.Samsung Internet: Before Samsung Internet 5.0, this property was part of the deprecated child DOMSettableTokenList interface.WebView Android: Before WebView Android 50, this property was part of the deprecated child DOMSettableTokenList interface.
api.Document.Document 📋Firefox4/2/2013 Edge4/30/20181854
api.Document.append 📋Firefox9/20/2016 Edge4/30/2018587
api.Document.childElementCount 📋Firefox10/29/2013 Edge4/30/20181644
api.Document.contentType 📋Firefox11/9/2004 Edge4/30/20184920
api.Document.documentURI 📋Firefox11/9/2004 Edge4/30/20184920
api.Document.firstElementChild 📋Firefox10/29/2013 Edge4/30/20181644
api.Document.lastElementChild 📋Firefox10/29/2013 Edge4/30/20181644
api.Document.prepend 📋Firefox9/20/2016 Edge4/30/2018587
api.DocumentFragment.DocumentFragment 📋Firefox9/17/2013 Edge4/30/20181686
api.DocumentFragment.append 📋Firefox9/20/2016 Edge4/30/2018587
api.DocumentFragment.childElementCount 📋Firefox10/29/2013 Edge4/30/20181644
api.DocumentFragment.firstElementChild 📋Firefox10/29/2013 Edge4/30/20181644
api.DocumentFragment.getElementById 📋Firefox3/18/2014 Edge4/30/20181504
api.DocumentFragment.lastElementChild 📋Firefox10/29/2013 Edge4/30/20181644
api.DocumentFragment.prepend 📋Firefox9/20/2016 Edge4/30/2018587
api.DocumentType.after 📋Firefox9/20/2016 Edge4/30/2018587
api.DocumentType.before 📋Firefox9/20/2016 Edge4/30/2018587
api.DocumentType.replaceWith 📋Firefox9/20/2016 Edge4/30/2018587
api.EXT_blend_minmax 📋Safari9/30/2015 Edge4/30/2018943
Firefox: Not supported on Windows.
api.Element.after 📋Firefox9/20/2016 Edge4/30/2018587
api.Element.append 📋Firefox9/20/2016 Edge4/30/2018587
api.Element.before 📋Firefox9/20/2016 Edge4/30/2018587
api.Element.insertAdjacentElement 📋Safari10/26/2007 Edge4/30/20183839
Edge: Only supported for HTMLElement, not all Element objects, such as SVGElement.Internet Explorer: Only supported for HTMLElement, not all Element objects, such as SVGElement.
api.Element.insertAdjacentHTML 📋Safari6/8/2009 Edge4/30/20183248
Edge: Only supported for HTMLElement, not all Element objects, such as SVGElement.Internet Explorer: Before Internet Explorer 10, throws an "Invalid target element for this operation." error when called on a <table>, <tbody>, <thead>, or <tr> element.Internet Explorer: Only supported for HTMLElement, not all Element objects, such as SVGElement.
api.Element.insertAdjacentText 📋Safari6/8/2009 Edge4/30/20183248
Edge: Only supported for HTMLElement, not all Element objects, such as SVGElement.Internet Explorer: Only supported for HTMLElement, not all Element objects, such as SVGElement.
api.Element.prepend 📋Firefox9/20/2016 Edge4/30/2018587
api.Element.replaceWith 📋Firefox9/20/2016 Edge4/30/2018587
api.ExtendableEvent 📋Firefox1/26/2016 Edge4/30/2018825
api.ExtendableEvent.ExtendableEvent 📋Firefox1/26/2016 Edge4/30/2018825
api.ExtendableEvent.waitUntil 📋Firefox1/26/2016 Edge4/30/2018825
api.ExtendableEvent.waitUntil.async_waitUntil Firefox4/19/2017 Edge4/30/2018376
api.ExtendableMessageEvent 📋Firefox1/26/2016 Edge4/30/2018825
api.ExtendableMessageEvent.ExtendableMessageEvent 📋Firefox1/26/2016 Edge4/30/2018825
api.ExtendableMessageEvent.data 📋Firefox1/26/2016 Edge4/30/2018825
api.ExtendableMessageEvent.lastEventId 📋Firefox1/26/2016 Edge4/30/2018825
api.ExtendableMessageEvent.origin 📋Firefox1/26/2016 Edge4/30/2018825
api.ExtendableMessageEvent.ports 📋Firefox1/26/2016 Edge4/30/2018825
api.ExtendableMessageEvent.source 📋Firefox1/26/2016 Edge4/30/2018825
api.FetchEvent 📋Firefox1/26/2016 Edge4/30/2018825
api.FetchEvent.FetchEvent 📋Firefox1/26/2016 Edge4/30/2018825
api.FetchEvent.clientId 📋Firefox3/8/2016 Edge4/30/2018783
api.FetchEvent.request 📋Firefox1/26/2016 Edge4/30/2018825
api.FetchEvent.respondWith 📋Firefox1/26/2016 Edge4/30/2018825
api.HTMLAnchorElement.origin 📋Safari7/20/2011 Edge4/30/20182476
Firefox: Before Firefox 49, results for URL using the blob scheme incorrectly returned null.Firefox for Android: Before Firefox for Android 49, results for URL using the blob scheme incorrectly returned null.
api.HTMLAnchorElement.ping 📋Firefox11/9/2004 Edge4/30/20184920
Firefox: This property is exposed but has no effect if the browser.send_pings preference is not set to true. See bug 951104.Firefox for Android: This property is exposed but has no effect if the browser.send_pings preference is not set to true. See bug 951104.
api.HTMLAreaElement.origin 📋Firefox12/10/2013 Edge4/30/20181602
Firefox: Before Firefox 49, results for URL using the blob scheme incorrectly returned null.Firefox for Android: Before Firefox for Android 49, results for URL using the blob scheme incorrectly returned null.
api.HTMLAreaElement.ping 📋Firefox11/9/2004 Edge4/30/20184920
Firefox: This property is exposed but has no effect if the browser.send_pings preference is not set to true. See bug 951104.Firefox for Android: This property is exposed but has no effect if the browser.send_pings preference is not set to true. See bug 951104.
api.HTMLButtonElement.reportValidity 📋Firefox9/20/2016 Edge4/30/2018587
api.HTMLFieldSetElement.elements 📋Firefox3/22/2011 Edge4/30/20182596
api.HTMLFieldSetElement.reportValidity 📋Firefox9/20/2016 Edge4/30/2018587
api.HTMLFieldSetElement.type 📋Firefox3/22/2011 Edge4/30/20182596
api.HTMLFormElement.reportValidity 📋Firefox9/20/2016 Edge4/30/2018587
api.HTMLInputElement.minLength 📋Firefox1/24/2017 Edge4/30/2018461
api.HTMLInputElement.reportValidity 📋Firefox9/20/2016 Edge4/30/2018587
api.HTMLLinkElement.as 📋Safari9/20/2016 Edge4/30/2018587
api.HTMLLinkElement.crossOrigin 📋Firefox1/8/2013 Edge4/30/20181938
api.HTMLLinkElement.integrity 📋Firefox12/15/2015 Edge4/30/2018867
api.HTMLLinkElement.relList 📋Firefox6/10/2014 Edge4/30/20181420
api.HTMLMediaElement.play.returns_promise Safari9/20/2016 Edge4/30/2018587
api.HTMLScriptElement.integrity 📋Firefox12/15/2015 Edge4/30/2018867
api.HTMLSelectElement.reportValidity 📋Firefox9/20/2016 Edge4/30/2018587
api.HTMLTextAreaElement.minLength 📋Firefox1/24/2017 Edge4/30/2018461
api.HTMLTextAreaElement.reportValidity 📋Firefox9/20/2016 Edge4/30/2018587
api.HTMLTextAreaElement.textLength 📋Firefox11/9/2004 Edge4/30/20184920
api.MediaSource.clearLiveSeekableRange 📋Firefox11/15/2016 Edge4/30/2018531
Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.MediaSource.setLiveSeekableRange 📋Firefox11/15/2016 Edge4/30/2018531
Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.MediaSource.sourceended_event 📋Firefox11/3/2015 Edge4/30/2018909
Chrome: The onsourceended event handler property is not supported.Chrome Android: The onsourceended event handler property is not supported.Edge: The onsourceended event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onsourceended event handler property is not supported.Opera Android: The onsourceended event handler property is not supported.Safari: The onsourceended event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onsourceended event handler property is not supported.WebView Android: The onsourceclose event handler property is not supported.
api.MediaSource.sourceopen_event 📋Firefox11/3/2015 Edge4/30/2018909
Chrome: The onsourceopen event handler property is not supported.Chrome Android: The onsourceopen event handler property is not supported.Edge: The onsourceopen event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onsourceopen event handler property is not supported.Opera Android: The onsourceopen event handler property is not supported.Safari: The onsourceopen event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onsourceopen event handler property is not supported.WebView Android: The onsourceopen event handler property is not supported.
api.MessageEvent.lastEventId 📋Firefox6/17/2008 Edge4/30/20183604
api.Navigator.serviceWorker 📋Firefox1/26/2016 Edge4/30/2018825
Firefox: In Firefox private windows, the serviceWorker object is undefined. See bug 1320796.Firefox for Android: In Firefox for Android private windows, the serviceWorker object is undefined. See bug 1320796.
api.NodeIterator.pointerBeforeReferenceNode 📋Safari10/26/2007 Edge4/30/20183839
api.NodeIterator.referenceNode 📋Safari10/26/2007 Edge4/30/20183839
api.OES_vertex_array_object 📋Firefox10/29/2013 Edge4/30/20181644
api.OES_vertex_array_object.bindVertexArrayOES 📋Firefox10/29/2013 Edge4/30/20181644
api.OES_vertex_array_object.createVertexArrayOES 📋Firefox10/29/2013 Edge4/30/20181644
api.OES_vertex_array_object.deleteVertexArrayOES 📋Firefox10/29/2013 Edge4/30/20181644
api.OES_vertex_array_object.isVertexArrayOES 📋Firefox10/29/2013 Edge4/30/20181644
api.PerformanceResourceTiming.nextHopProtocol 📋Firefox3/8/2016 Edge4/30/2018783
api.Range.comparePoint 📋Firefox11/9/2004 Edge4/30/20184920
api.Range.intersectsNode 📋Safari10/26/2007 Edge4/30/20183839
api.SVGElement.blur 📋Safari10/26/2007 Edge4/30/20183839
api.SVGElement.dataset 📋Safari7/20/2011 Edge4/30/20182476
api.SVGElement.focus 📋Safari10/26/2007 Edge4/30/20183839
api.SVGElement.tabIndex 📋Safari10/16/2014 Edge4/30/20181292
api.Selection.collapse.node_parameter_nullable Safari4/15/2005 Edge4/30/20184763
api.Selection.collapse.offset_parameter_optional Safari4/15/2005 Edge4/30/20184763
api.Selection.containsNode.partialContainment_parameter_optional Safari3/18/2008 Edge4/30/20183695
api.Selection.extend.offset_parameter_optional Safari3/18/2008 Edge4/30/20183695
api.ServiceWorker 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorker.error_event 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorker.postMessage 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorker.scriptURL 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorker.state 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorker.statechange_event 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerContainer 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerContainer.controller 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerContainer.controllerchange_event 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerContainer.getRegistration 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerContainer.getRegistrations 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerContainer.message_event 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerContainer.ready 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerContainer.register 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerGlobalScope 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerGlobalScope.activate_event 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerGlobalScope.clients 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerGlobalScope.fetch_event 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerGlobalScope.install_event 📋Firefox1/26/2016 Edge4/30/2018825
Firefox: The install event handler is called with an ExtendableEvent, not an InstallEvent.Firefox for Android: The install event handler is called with an ExtendableEvent, not an InstallEvent.Safari: Returns ExtendableEvent instead of InstallEvent.Safari on iOS: Returns ExtendableEvent instead of InstallEvent.
api.ServiceWorkerGlobalScope.message_event 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerGlobalScope.registration 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerGlobalScope.skipWaiting 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerRegistration 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerRegistration.active 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerRegistration.installing 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerRegistration.scope 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerRegistration.unregister 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerRegistration.update 📋Firefox1/26/2016 Edge4/30/2018825
Chrome: Starting with Chrome 46, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.Chrome: Before Chrome 48, this method always bypassed the browser cache. Starting with Chrome 48, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago.Chrome Android: Starting with Chrome Android 46, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.Chrome Android: Before Chrome Android 48, this method always bypassed the browser cache. Starting with Chrome Android 48, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago.Quest Browser: Starting with Quest Browser 5.0, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.Quest Browser: Before Quest Browser 5.0, this method always bypassed the browser cache. Starting with Quest Browser 5.0, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago.Opera: Starting with Opera 33, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.Opera: Before Opera 35, this method always bypassed the browser cache. Starting with Opera 35, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago.Opera Android: Starting with Opera Android 33, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.Opera Android: Before Opera Android 35, this method always bypassed the browser cache. Starting with Opera Android 35, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago.Samsung Internet: Starting with Samsung Internet 5.0, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.Samsung Internet: Before Samsung Internet 5.0, this method always bypassed the browser cache. Starting with Samsung Internet 5.0, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago.WebView Android: Starting with WebView Android 46, update() returns a promise that resolves with 'undefined' if the operation completed successfully or there was no update, and rejects if update failed. If the new worker ran but installation failed, the promise still resolves. Formerly, it raised an exception.WebView Android: Before WebView Android 48, this method always bypassed the browser cache. Starting with WebView Android 48, it only bypasses the cache when the previous service worker check was more than twenty-four hours ago.
api.ServiceWorkerRegistration.updatefound_event 📋Firefox1/26/2016 Edge4/30/2018825
api.ServiceWorkerRegistration.waiting 📋Firefox1/26/2016 Edge4/30/2018825
api.SourceBuffer.abort_event 📋Firefox11/3/2015 Edge4/30/2018909
Chrome: The onabort event handler property is not supported.Chrome Android: The onabort event handler property is not supported.Edge: The onabort event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onabort event handler property is not supported.Opera Android: The onabort event handler property is not supported.Safari: The onabort event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onabort event handler property is not supported.WebView Android: The onabort event handler property is not supported.
api.SourceBuffer.error_event 📋Firefox11/3/2015 Edge4/30/2018909
Chrome: The onerror event handler property is not supported.Chrome Android: The onerror event handler property is not supported.Edge: The onerror event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onerror event handler property is not supported.Opera Android: The onerror event handler property is not supported.Safari: The onerror event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onerror event handler property is not supported.WebView Android: The onerror event handler property is not supported.
api.SourceBuffer.update_event 📋Firefox11/3/2015 Edge4/30/2018909
Chrome: The onupdate event handler property is not supported.Chrome Android: The onupdate event handler property is not supported.Edge: The onupdate event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onupdate event handler property is not supported.Opera Android: The onupdate event handler property is not supported.Safari: The onupdate event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onupdate event handler property is not supported.WebView Android: The onupdate event handler property is not supported.
api.SourceBuffer.updateend_event 📋Firefox11/3/2015 Edge4/30/2018909
Chrome: The onupdateend event handler property is not supported.Chrome Android: The onupdateend event handler property is not supported.Edge: The onupdateend event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onupdateend event handler property is not supported.Opera Android: The onupdateend event handler property is not supported.Safari: The onupdateend event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onupdateend event handler property is not supported.WebView Android: The onupdateend event handler property is not supported.
api.SourceBuffer.updatestart_event 📋Firefox11/3/2015 Edge4/30/2018909
Chrome: The onupdatestart event handler property is not supported.Chrome Android: The onupdatestart event handler property is not supported.Edge: The onupdatestart event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onupdatestart event handler property is not supported.Opera Android: The onupdatestart event handler property is not supported.Safari: The onupdatestart event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onupdatestart event handler property is not supported.WebView Android: The onupdatestart event handler property is not supported.
api.SourceBufferList.addsourcebuffer_event 📋Firefox11/3/2015 Edge4/30/2018909
Chrome: The onaddsourcebuffer event handler property is not supported.Chrome Android: The onaddsourcebuffer event handler property is not supported.Edge: The onaddsourcebuffer event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onaddsourcebuffer event handler property is not supported.Opera Android: The onaddsourcebuffer event handler property is not supported.Safari: The onaddsourcebuffer event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onaddsourcebuffer event handler property is not supported.WebView Android: The onaddsourcebuffer event handler property is not supported.WebView on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SourceBufferList.removesourcebuffer_event 📋Firefox11/3/2015 Edge4/30/2018909
Chrome: The onremovesourcebuffer event handler property is not supported.Chrome Android: The onremovesourcebuffer event handler property is not supported.Edge: The onremovesourcebuffer event handler property is not supported.Internet Explorer: Only works on Windows 8+.Opera: The onremovesourcebuffer event handler property is not supported.Opera Android: The onremovesourcebuffer event handler property is not supported.Safari: The onremovesourcebuffer event handler property is not supported.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: The onremovesourcebuffer event handler property is not supported.WebView Android: The onremovesourcebuffer event handler property is not supported.WebView on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.StorageEvent.StorageEvent Firefox6/5/2012 Edge4/30/20182155
api.URL.searchParams 📋Firefox4/29/2014 Edge4/30/20181462
Node.js: An object matching the URLSearchParams interface is returned, but it contains no data.
api.URL.toJSON 📋Firefox6/13/2017 Edge4/30/2018321
api.URL.toString 📋Safari10/22/2013 Edge4/30/20181651
api.URLSearchParams 📋Firefox4/29/2014 Edge4/30/20181462
Firefox: Before version 57 single quotes in URLs were escaped (see bug 1386683).Firefox for Android: Before version 57 single quotes in URLs were escaped (see bug 1386683).Node.js: Available as a part of the url module.Node.js: Only available as an internal instance, but can be accessed via the searchParams property of the URL interface.Node.js: Available as a part of the url module.
api.URLSearchParams.@@iterator 📋Firefox1/26/2016 Edge4/30/2018825
api.URLSearchParams.URLSearchParams 📋Firefox4/29/2014 Edge4/30/20181462
api.URLSearchParams.URLSearchParams.USVString Firefox4/29/2014 Edge4/30/20181462
api.URLSearchParams.URLSearchParams.record Firefox6/13/2017 Edge4/30/2018321
api.URLSearchParams.URLSearchParams.sequence Firefox4/19/2017 Edge4/30/2018376
api.URLSearchParams.append 📋Firefox4/29/2014 Edge4/30/20181462
api.URLSearchParams.entries 📋Firefox1/26/2016 Edge4/30/2018825
api.URLSearchParams.forEach 📋Firefox1/26/2016 Edge4/30/2018825
api.URLSearchParams.get 📋Firefox4/29/2014 Edge4/30/20181462
api.URLSearchParams.getAll 📋Firefox4/29/2014 Edge4/30/20181462
api.URLSearchParams.has 📋Firefox4/29/2014 Edge4/30/20181462
api.URLSearchParams.keys 📋Firefox1/26/2016 Edge4/30/2018825
api.URLSearchParams.set 📋Firefox4/29/2014 Edge4/30/20181462
api.URLSearchParams.sort 📋Firefox6/13/2017 Edge4/30/2018321
api.URLSearchParams.toString 📋Firefox4/29/2014 Edge4/30/20181462
api.URLSearchParams.values 📋Firefox1/26/2016 Edge4/30/2018825
api.ValidityState.tooShort 📋Safari9/20/2016 Edge4/30/2018587
api.WEBGL_draw_buffers 📋Firefox3/18/2014 Edge4/30/20181504
api.WEBGL_draw_buffers.drawBuffersWEBGL 📋Firefox3/18/2014 Edge4/30/20181504
api.WEBGL_lose_context 📋Firefox6/25/2013 Edge4/30/20181770
api.WEBGL_lose_context.loseContext 📋Firefox6/25/2013 Edge4/30/20181770
api.WEBGL_lose_context.restoreContext 📋Firefox6/25/2013 Edge4/30/20181770
api.WebGLVertexArrayObjectOES 📋Safari7/20/2011 Edge4/30/20182476
api.WindowClient 📋Firefox1/26/2016 Edge4/30/2018825
api.WindowClient.focus 📋Firefox1/26/2016 Edge4/30/2018825
api.WindowClient.focused 📋Firefox1/26/2016 Edge4/30/2018825
api.WindowClient.visibilityState 📋Firefox1/26/2016 Edge4/30/2018825
api.WorkerGlobalScope.navigator 📋Safari6/8/2009 Edge4/30/20183248
api.AbortSignal 📋Edge10/17/2017 Safari4/12/2018177
api.AbortSignal.abort_event 📋Edge10/17/2017 Safari4/12/2018177
api.AbortSignal.aborted 📋Edge10/17/2017 Safari4/12/2018177
api.Cache 📋Firefox9/22/2015 Safari4/12/2018933
Chrome: Before version 43, only service workers are supported. From version 43, all worker types and the main thread are supported.Chrome Android: Before version 43, only service workers are supported. From version 43, all worker types and the main thread are supported.Quest Browser: Before version 5.0, only service workers are supported. From version 5.0, all worker types and the main thread are supported.Opera: Before version 30, only service workers are supported. From version 30, all worker types and the main thread are supported.Opera Android: Before version 30, only service workers are supported. From version 30, all worker types and the main thread are supported.WebView Android: Before version 43, only service workers are supported. From version 43, all worker types and the main thread are supported.
api.Cache.add 📋Firefox9/22/2015 Safari4/12/2018933
Chrome: Requires HTTPS from version 46.Chrome Android: Requires HTTPS from version 46.Quest Browser: Requires HTTPS from version 5.0.Opera: Requires HTTPS from version 33.Opera Android: Requires HTTPS from version 33.Samsung Internet: Requires HTTPS from Samsung Internet 5.0.WebView Android: Requires HTTPS from version 46.
api.Cache.addAll 📋Firefox9/22/2015 Safari4/12/2018933
Chrome: Requires HTTPS.Chrome Android: Requires HTTPS.Quest Browser: Requires HTTPS.Opera: Requires HTTPS.Opera Android: Requires HTTPS.Samsung Internet: Requires HTTPS.WebView Android: Requires HTTPS.
api.Cache.delete 📋Firefox9/22/2015 Safari4/12/2018933
Deno: Doesn't support query options
api.Cache.keys 📋Firefox9/22/2015 Safari4/12/2018933
api.Cache.match 📋Firefox9/22/2015 Safari4/12/2018933
Deno: Doesn't support query options
api.Cache.matchAll 📋Firefox9/22/2015 Safari4/12/2018933
Opera: Requires HTTPS.
api.Cache.put 📋Firefox9/22/2015 Safari4/12/2018933
Chrome: Requires HTTPS from version 46.Chrome Android: Requires HTTPS from version 46.Quest Browser: Requires HTTPS from version 5.0.Opera: Requires HTTPS from version 33.Opera Android: Requires HTTPS from version 33.Samsung Internet: Requires HTTPS from Samsung Internet 5.0.WebView Android: Requires HTTPS from version 46.
api.Cache.worker_support Firefox1/26/2016 Safari4/12/2018807
Chrome: Before version 43, only service workers are supported. From version 43, all worker types and the main thread are supported.Chrome Android: Before version 43, only service workers are supported. From version 43, all worker types and the main thread are supported.Quest Browser: Before version 5.0, only service workers are supported. From version 5.0, all worker types and the main thread are supported.Opera: Before version 30, only service workers are supported. From version 30, all worker types and the main thread are supported.Opera Android: Before version 30, only service workers are supported. From version 30, all worker types and the main thread are supported.WebView Android: Before version 43, only service workers are supported. From version 43, all worker types and the main thread are supported.
api.CacheStorage 📋Firefox9/22/2015 Safari4/12/2018933
Chrome: Only available in service workers.Chrome Android: Only available in service workers.Opera: Only available in service workers.Opera Android: Only available in service workers.WebView Android: Only available in service workers.
api.CacheStorage.delete 📋Firefox9/22/2015 Safari4/12/2018933
api.CacheStorage.has 📋Firefox9/22/2015 Safari4/12/2018933
api.CacheStorage.keys 📋Firefox9/22/2015 Safari4/12/2018933
api.CacheStorage.match 📋Firefox9/22/2015 Safari4/12/2018933
Chrome: The options parameter only supports ignoreSearch, and cacheName.Chrome Android: The options parameter only supports ignoreSearch, and cacheName.Opera: The options parameter only supports ignoreSearch, and cacheName.Opera Android: The options parameter only supports ignoreSearch, and cacheName.Samsung Internet: The options parameter only supports ignoreSearch, and cacheName.WebView Android: The options parameter only supports ignoreSearch, and cacheName.
api.CacheStorage.open 📋Firefox9/22/2015 Safari4/12/2018933
api.CacheStorage.worker_support Firefox1/26/2016 Safari4/12/2018807
Chrome: Only available in service workers.Chrome Android: Only available in service workers.Opera: Only available in service workers.Opera Android: Only available in service workers.WebView Android: Only available in service workers.
api.DataTransfer.items 📋Edge7/29/2015 Safari4/12/2018988
api.DataTransferItem.webkitGetAsEntry 📋Edge8/2/2016 Safari4/12/2018618
api.File.webkitRelativePath 📋Edge11/12/2015 Safari4/12/2018882
Firefox for Android: Always an empty string (bug 1973726).
api.HTMLInputElement.webkitdirectory 📋Edge11/12/2015 Safari4/12/2018882
Chrome Android: In Chrome for Android 131, if a user selects a directory, the browser crashes (see bug 376834374).Chrome Android: The property reflects the attribute, but users cannot choose a directory, only individual files (see bug 40248532.Firefox for Android: File entries returned for a selected directory have an empty string for webkitRelativePath (bug 1973726).Quest Browser: The property reflects the attribute, but users cannot choose a directory, only individual files (see bug 40248532.Opera Android: The property reflects the attribute, but users cannot choose a directory, only individual files (see bug 40248532.Safari on iOS: The property can be set, but has no effect (see bug 271705).Samsung Internet: The property reflects the attribute, but users cannot choose a directory, only individual files (see bug 40248532.WebView Android: In Chrome for Android 131, if a user selects a directory, the browser crashes (see bug 376834374).WebView Android: The property reflects the attribute, but users cannot choose a directory, only individual files (see bug 40248532.WebView on iOS: The property can be set, but has no effect (see bug 271705).
api.MouseEvent.buttons 📋Firefox8/28/2012 Safari4/12/20182053
Firefox: Restrictions apply depending on OS.
api.Navigator.sendBeacon 📋Firefox7/22/2014 Safari4/12/20181360
Chrome: Starting in Chrome 59, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600.Chrome Android: Starting in Chrome 59, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600.Quest Browser: Starting in Chrome 59, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600.Opera: Starting in Opera 46, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600.Opera Android: Starting in Chrome 59, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600.Samsung Internet: Starting in Chrome 59, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600.WebView Android: Starting in Chrome 59, this method cannot send a Blob whose type is not CORS safelisted. This is a temporary change until a mitigation can be found for the security issues that this creates. For more information, see bug 40087600.
api.PaymentRequest 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentRequest.PaymentRequest 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentRequest.abort 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentRequest.canMakePayment 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequest.id 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequest.shippingAddress Edge4/5/2017 Safari4/12/2018372
api.PaymentRequest.shippingOption Edge4/5/2017 Safari4/12/2018372
api.PaymentRequest.shippingType Edge4/5/2017 Safari4/12/2018372
api.PaymentRequest.shippingaddresschange_event Edge4/5/2017 Safari4/12/2018372
api.PaymentRequest.shippingoptionchange_event Edge4/5/2017 Safari4/12/2018372
api.PaymentRequest.show 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentRequestUpdateEvent 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentRequestUpdateEvent.PaymentRequestUpdateEvent 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentRequestUpdateEvent.updateWith 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentResponse 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentResponse.complete 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentResponse.details 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentResponse.methodName 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentResponse.payerEmail 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentResponse.payerName 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentResponse.payerPhone 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentResponse.requestId 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentResponse.shippingAddress 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentResponse.shippingOption 📋Edge4/5/2017 Safari4/12/2018372
api.PaymentResponse.toJSON Edge4/5/2017 Safari4/12/2018372
api.caches 📋Firefox9/22/2015 Safari4/12/2018933
api.caches.worker_support Firefox9/22/2015 Safari4/12/2018933
api.fetch.init_signal_parameter Edge10/17/2017 Safari4/12/2018177
api.isSecureContext 📋Firefox9/20/2016 Safari4/12/2018569
api.isSecureContext.worker_support Firefox3/7/2017 Safari4/12/2018401

2018/3

API First Browser Date Last Browser Date Days Notes
api.CSSNamespaceRule.namespaceURI 📋Edge7/29/2015 Firefox3/13/2018958
api.CSSNamespaceRule.prefix 📋Edge7/29/2015 Firefox3/13/2018958
api.MediaStreamTrack.mute_event 📋Edge7/29/2015 Firefox3/13/2018958
api.MediaStreamTrack.muted 📋Edge7/29/2015 Firefox3/13/2018958
Firefox: Does not currently track the microphone's muted state from the operating system, see bug 1739163.Firefox for Android: Does not currently track the microphone's muted state from the operating system, see bug 1739163.
api.MediaStreamTrack.unmute_event 📋Edge7/29/2015 Firefox3/13/2018958

2018/1

API First Browser Date Last Browser Date Days Notes
api.Document.getElementsByName 📋Safari6/8/2009 Firefox1/23/20183151
Edge: Before Edge 79, this method returns an HTMLCollection, not a NodeList.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Internet Explorer: Returns an HTMLCollection, not a NodeListSafari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.PerformanceResourceTiming.workerStart 📋Safari9/19/2017 Firefox1/23/2018126

2017/11

API First Browser Date Last Browser Date Days Notes
api.Document.getSelection 📋Safari6/8/2009 Firefox11/14/20173081
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.
api.HTMLInputElement.valueAsDate 📋Safari6/7/2010 Firefox11/14/20172717
api.Headers.iterate_combined_duplicates Safari3/27/2017 Firefox11/14/2017232
api.KeyboardEvent.initKeyboardEvent 📋Safari2/2/2004 Firefox11/14/20175034
api.Selection.type 📋Safari4/15/2005 Firefox11/14/20174596
javascript.statements.for_of.async_iterators Safari10/22/2013 Firefox11/14/20171484

2017/10

API First Browser Date Last Browser Date Days Notes
api.Comment.Comment 📋Firefox9/17/2013 Edge10/17/20171491
api.DOMTokenList.@@iterator Firefox2/24/2015 Edge10/17/2017966
api.DOMTokenList.entries Firefox11/15/2016 Edge10/17/2017336
api.DOMTokenList.forEach Firefox11/15/2016 Edge10/17/2017336
api.DOMTokenList.keys Firefox11/15/2016 Edge10/17/2017336
api.DOMTokenList.values Firefox11/15/2016 Edge10/17/2017336
api.Document.children 📋Firefox10/29/2013 Edge10/17/20171449
api.DocumentFragment.children 📋Firefox10/29/2013 Edge10/17/20171449
api.Element.classList 📋Firefox1/21/2010 Edge10/17/20172826
Chrome: Not supported for SVG elements.Chrome Android: Not supported for SVG elements.Edge: Not supported for SVG elements.Internet Explorer: Not supported for SVG elements.Safari: Not supported for SVG elements.Safari on iOS: Not supported for SVG elements.Samsung Internet: Not supported for SVG elements.WebView Android: Not supported for SVG elements.WebView on iOS: Not supported for SVG elements.
api.Element.getElementsByClassName 📋Safari3/18/2008 Edge10/17/20173500
Edge: Only supported for HTMLElement, not all Element objects, such as SVGElement.Firefox: Before Firefox 19, this method was returning a NodeList; it was then changed to reflect the change in the spec.Internet Explorer: Only supported for HTMLElement, not all Element objects, such as SVGElement.
api.EventTarget.addEventListener.options_parameter Firefox9/20/2016 Edge10/17/2017392
api.EventTarget.addEventListener.options_parameter.options_capture_parameter 📋Firefox9/20/2016 Edge10/17/2017392
api.EventTarget.addEventListener.options_parameter.options_once_parameter 📋Safari9/20/2016 Edge10/17/2017392
api.EventTarget.addEventListener.options_parameter.options_passive_parameter 📋Firefox9/20/2016 Edge10/17/2017392
api.EventTarget.removeEventListener.options_parameter Firefox9/20/2016 Edge10/17/2017392
api.Headers.@@iterator Firefox1/26/2016 Edge10/17/2017630
api.Headers.entries Firefox1/26/2016 Edge10/17/2017630
api.Headers.keys Firefox1/26/2016 Edge10/17/2017630
api.Headers.values Firefox1/26/2016 Edge10/17/2017630
api.Navigator.languages 📋Firefox9/2/2014 Edge10/17/20171141
Chrome: Before Chrome 65, navigator.languages[0] is not guaranteed to equal navigator.language.Chrome Android: Before Chrome Android 65, navigator.languages[0] is not guaranteed to equal navigator.language.Firefox: In Firefox, the navigator.languages property's value is taken from the intl.accept_languages preference.Firefox for Android: In Firefox for Android, the navigator.languages property's value is taken from the intl.accept_languages preference.Internet Explorer: Closest available (non-standard) properties are userLanguage and browserLanguage.Quest Browser: Before Quest Browser 5.0, navigator.languages[0] is not guaranteed to equal navigator.language.WebView Android: Before version 65, navigator.languages[0] is not guaranteed to equal navigator.language.
api.NodeList.entries Safari9/20/2016 Edge10/17/2017392
api.NodeList.forEach 📋Safari9/20/2016 Edge10/17/2017392
api.NodeList.keys Safari9/20/2016 Edge10/17/2017392
api.NodeList.values Safari9/20/2016 Edge10/17/2017392
api.PerformanceEntry.toJSON 📋Firefox1/13/2015 Edge10/17/20171008
api.PerformanceResourceTiming.toJSON 📋Firefox1/13/2015 Edge10/17/20171008
api.Range.collapse.toStart_parameter_optional Safari6/23/2003 Edge10/17/20175230
Internet Explorer: Optional but defaults to true.
api.Response.error_static 📋Firefox7/2/2015 Edge10/17/2017838
api.Response.redirect_static 📋Firefox7/2/2015 Edge10/17/2017838
api.Response.redirected 📋Firefox9/20/2016 Edge10/17/2017392
api.Text.Text 📋Firefox9/17/2013 Edge10/17/20171491
api.WorkerNavigator.languages 📋Firefox9/2/2014 Edge10/17/20171141
Chrome: Before Chrome 65, navigator.languages[0] is not guaranteed to equal navigator.language.Chrome Android: Before Chrome Android 65, navigator.languages[0] is not guaranteed to equal navigator.language.Firefox: In Firefox, the navigator.languages property's value is taken from the intl.accept_languages preference.Firefox for Android: In Firefox for Android, the navigator.languages property's value is taken from the intl.accept_languages preference.Internet Explorer: Closest available (non-standard) properties are userLanguage and browserLanguage.Quest Browser: Before Quest Browser 5.0, navigator.languages[0] is not guaranteed to equal navigator.language.WebView Android: Before version 65, navigator.languages[0] is not guaranteed to equal navigator.language.
javascript.builtins.Intl.getCanonicalLocales 📋Firefox8/2/2016 Edge10/17/2017441
javascript.operators.destructuring.rest_in_arrays Firefox9/22/2015 Edge10/17/2017756

2017/9

API First Browser Date Last Browser Date Days Notes
api.AudioContext.createMediaStreamSource 📋Firefox10/29/2013 Safari9/19/20171421
api.Crypto.subtle 📋Firefox12/1/2014 Safari9/19/20171023
api.MediaDeviceInfo 📋Firefox7/2/2015 Safari9/19/2017810
api.MediaDeviceInfo.deviceId 📋Firefox7/2/2015 Safari9/19/2017810
api.MediaDeviceInfo.groupId 📋Firefox7/2/2015 Safari9/19/2017810
Firefox: Before Firefox 67, related devices are not actually grouped together by groupId.Firefox for Android: Before Firefox for Android 67, related devices are not actually grouped together by groupId.
api.MediaDeviceInfo.kind 📋Firefox7/2/2015 Safari9/19/2017810
api.MediaDeviceInfo.label 📋Firefox7/2/2015 Safari9/19/2017810
api.MediaDevices 📋Firefox10/14/2014 Safari9/19/20171071
api.MediaDevices.devicechange_event 📋Edge7/29/2015 Safari9/19/2017783
api.MediaDevices.getSupportedConstraints 📋Edge7/29/2015 Safari9/19/2017783
api.MediaDevices.getUserMedia 📋Firefox2/24/2015 Safari9/19/2017938
Chrome: If you need this capability before version 53, refer to navigator.webkitGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API.Chrome Android: If you need this capability before version 53, refer to navigator.webkitGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API.Firefox: If you need this capability before version 36, refer to navigator.mozGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API.Firefox: Before Firefox 55, getUserMedia() incorrectly returns NotSupportedError when the list of constraints specified is empty, or has all constraints set to false. Starting in Firefox 55, this situation now correctly calls the failure handler with a TypeError.Firefox: When using the Firefox-specific video constraint called mediaSource to request display capture, Firefox 66 and later consider values of screen and window to both cause a list of screens and windows to be shown.Firefox: Starting in Firefox 66, getUserMedia() can no longer be used in sandboxed <iframe>s or data URLs entered in the address bar by the user.Firefox for Android: If you need this capability before version 36, refer to navigator.mozGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API.Firefox for Android: Before Firefox for Android 55, getUserMedia() incorrectly returns NotSupportedError when the list of constraints specified is empty, or has all constraints set to false. Starting in Firefox for Android 55, this situation now correctly calls the failure handler with a TypeError.Firefox for Android: When using the Firefox for Android-specific video constraint called mediaSource to request display capture, Firefox for Android 66 and later consider values of screen and window to both cause a list of screens and windows to be shown.Firefox for Android: Starting in Firefox for Android 66, getUserMedia() can no longer be used in sandboxed <iframe>s or data URLs entered in the address bar by the user.Quest Browser: If you need this capability before version 5.0, refer to navigator.webkitGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API.Opera: If you need this capability before version 40, refer to navigator.webkitGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API.Opera Android: If you need this capability before version 41, refer to navigator.webkitGetUserMedia, a prefixed form of the deprecated navigator.getUserMedia API.
api.MediaStream 📋Firefox8/28/2012 Safari9/19/20171848
api.MediaStream.MediaStream 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStream.active 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStream.addTrack 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStream.addtrack_event 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStream.clone 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStream.getAudioTracks 📋Firefox6/25/2013 Safari9/19/20171547
Firefox: Before Firefox 64, this method returned an array of AudioStreamTrack objects. However, MediaStreamTrack has now subsumed that interface's functionality.Firefox for Android: Before Firefox for Android 64, this method returned an array of AudioStreamTrack objects. However, MediaStreamTrack has now subsumed that interface's functionality.
api.MediaStream.getTrackById 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStream.getTracks 📋Firefox12/1/2014 Safari9/19/20171023
api.MediaStream.getVideoTracks 📋Firefox6/25/2013 Safari9/19/20171547
Firefox: Before Firefox 64, this method returned an array of VideoStreamTrack objects. However, MediaStreamTrack has now subsumed that interface's functionality.Firefox for Android: Before Firefox for Android 64, this method returned an array of VideoStreamTrack objects. However, MediaStreamTrack has now subsumed that interface's functionality.
api.MediaStream.id 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStream.removeTrack 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStreamAudioSourceNode 📋Firefox10/29/2013 Safari9/19/20171421
api.MediaStreamTrack 📋Firefox6/25/2013 Safari9/19/20171547
api.MediaStreamTrack.applyConstraints 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStreamTrack.applyConstraints.deviceId_constraint 📋Edge7/29/2015 Safari9/19/2017783
Firefox: Before Firefox 69, Firefox only supported deviceId in constraints passed into getUserMedia().Firefox for Android: Firefox for Android only supports deviceId when used in constraints passed into getUserMedia().
api.MediaStreamTrack.applyConstraints.facingMode_constraint 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStreamTrack.applyConstraints.frameRate_constraint 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStreamTrack.applyConstraints.height_constraint 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStreamTrack.applyConstraints.width_constraint 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStreamTrack.clone 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStreamTrack.enabled 📋Firefox9/17/2013 Safari9/19/20171463
api.MediaStreamTrack.ended_event 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStreamTrack.getConstraints 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStreamTrack.getSettings 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStreamTrack.id 📋Firefox6/25/2013 Safari9/19/20171547
api.MediaStreamTrack.kind 📋Firefox6/25/2013 Safari9/19/20171547
api.MediaStreamTrack.label 📋Firefox6/25/2013 Safari9/19/20171547
api.MediaStreamTrack.readyState 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStreamTrack.stop 📋Firefox12/1/2014 Safari9/19/20171023
api.MediaStreamTrackEvent 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStreamTrackEvent.MediaStreamTrackEvent 📋Edge7/29/2015 Safari9/19/2017783
api.MediaStreamTrackEvent.track 📋Edge7/29/2015 Safari9/19/2017783
api.Navigator.mediaDevices 📋Firefox2/24/2015 Safari9/19/2017938
api.Notification.body 📋Firefox12/10/2013 Safari9/19/20171379
api.Notification.lang 📋Firefox12/10/2013 Safari9/19/20171379
api.Notification.title 📋Firefox12/10/2013 Safari9/19/20171379
api.Performance.clearMarks 📋Firefox5/12/2015 Safari9/19/2017861
api.Performance.clearMeasures 📋Firefox5/12/2015 Safari9/19/2017861
api.Performance.clearResourceTimings 📋Firefox1/13/2015 Safari9/19/2017980
api.Performance.getEntries 📋Firefox1/13/2015 Safari9/19/2017980
api.Performance.getEntriesByName 📋Firefox1/13/2015 Safari9/19/2017980
api.Performance.getEntriesByType 📋Firefox1/13/2015 Safari9/19/2017980
api.Performance.mark 📋Firefox5/12/2015 Safari9/19/2017861
api.Performance.measure 📋Firefox5/12/2015 Safari9/19/2017861
api.Performance.setResourceTimingBufferSize 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceEntry 📋Firefox1/13/2015 Safari9/19/2017980
Node.js: Available as a part of the perf_hooks module.
api.PerformanceEntry.duration 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceEntry.entryType 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceEntry.name 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceEntry.startTime 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceMark 📋Firefox5/12/2015 Safari9/19/2017861
Node.js: Available as a part of the perf_hooks module.
api.PerformanceMeasure 📋Firefox5/12/2015 Safari9/19/2017861
Node.js: Available as a part of the perf_hooks module.Node.js: Only available as an internal instance, but can be accessed via getting performance entries.
api.PerformanceResourceTiming 📋Firefox1/13/2015 Safari9/19/2017980
Node.js: Available as a part of the perf_hooks module.Node.js: Available as a part of the perf_hooks module.
api.PerformanceResourceTiming.connectEnd 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceResourceTiming.connectStart 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceResourceTiming.domainLookupEnd 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceResourceTiming.domainLookupStart 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceResourceTiming.fetchStart 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceResourceTiming.initiatorType 📋Firefox1/13/2015 Safari9/19/2017980
Node.js: Since v18.2.0, the value can be returned by toJSON(), but can not accessed via property getter.
api.PerformanceResourceTiming.redirectEnd 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceResourceTiming.redirectStart 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceResourceTiming.requestStart 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceResourceTiming.responseEnd 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceResourceTiming.responseStart 📋Firefox1/13/2015 Safari9/19/2017980
api.RTCIceCandidate 📋Firefox1/26/2016 Safari9/19/2017602
api.RTCIceCandidate.RTCIceCandidate 📋Firefox1/26/2016 Safari9/19/2017602
Firefox: Before Firefox 68, the constructor's candidateInfo parameter is required and the candidateInfo object must have a candidate property.Firefox: Before Firefox 68, the constructor's candidateInfo parameter is required and the candidateInfo object must have a candidate property.Firefox for Android: Before Firefox 68, the constructor's candidateInfo parameter is required and the candidateInfo object must have a candidate property.Firefox for Android: Before Firefox 68, the constructor's candidateInfo parameter is required and the candidateInfo object must have a candidate property.
api.RTCIceCandidate.candidate 📋Firefox6/25/2013 Safari9/19/20171547
Firefox: Before Firefox 126, the property was not read-only.Firefox for Android: Before Firefox 126, the property was not read-only.
api.RTCIceCandidate.sdpMLineIndex 📋Firefox6/25/2013 Safari9/19/20171547
Firefox: Before Firefox 126, the property was not read-only.Firefox for Android: Before Firefox 126, the property was not read-only.
api.RTCIceCandidate.sdpMid 📋Firefox6/25/2013 Safari9/19/20171547
Firefox: Before Firefox 126, the property was not read-only.Firefox for Android: Before Firefox 126, the property was not read-only.
api.RTCIceCandidate.toJSON 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCPeerConnection 📋Firefox1/26/2016 Safari9/19/2017602
api.RTCPeerConnection.RTCPeerConnection 📋Firefox1/26/2016 Safari9/19/2017602
Chrome: Before Chrome 63, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required".Chrome Android: Before Chrome Android 63, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required".Quest Browser: Before Quest Browser 5.0, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required".Opera: Before Opera 50, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required".Opera Android: Before Opera Android 46, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required".Samsung Internet: Before Samsung Internet 8.0, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required".WebView Android: Before WebView Android 63, the default value for the configuration.rtcpMuxPolicy parameter is "negotiate" instead of "required".
api.RTCPeerConnection.addIceCandidate 📋Firefox6/25/2013 Safari9/19/20171547
Firefox: Starting in Firefox 68, the candidate parameter is optional when calling addIceCandidate(). A null value for candidate indicates no more candidates will be sent, while an empty candidate string indicates that no more candidates will be sent for the current generation of candidates.Firefox for Android: Starting in Firefox 68, the candidate parameter is optional when calling addIceCandidate(). A null value for candidate indicates no more candidates will be sent, while an empty candidate string indicates that no more candidates will be sent for the current generation of candidates.
api.RTCPeerConnection.close 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.createAnswer 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.createOffer 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.getConfiguration 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.getStats 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCPeerConnection.iceConnectionState 📋Firefox9/17/2013 Safari9/19/20171463
api.RTCPeerConnection.iceGatheringState 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.icecandidate_event 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.iceconnectionstatechange_event 📋Firefox9/17/2013 Safari9/19/20171463
api.RTCPeerConnection.icegatheringstatechange_event 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.localDescription 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.negotiationneeded_event 📋Firefox5/12/2015 Safari9/19/2017861
Firefox: Although the onnegotiationneeded property is supported, the negotiationneeded event is never fired.Firefox for Android: Although the onnegotiationneeded property is supported, the negotiationneeded event is never fired.
api.RTCPeerConnection.remoteDescription 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.setLocalDescription 📋Firefox6/25/2013 Safari9/19/20171547
Firefox: Firefox does not support descriptions of type pranswer.Firefox for Android: Firefox does not support descriptions of type pranswer.
api.RTCPeerConnection.setRemoteDescription 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.signalingState 📋Firefox9/17/2013 Safari9/19/20171463
api.RTCPeerConnection.signalingstatechange_event 📋Firefox2/24/2015 Safari9/19/2017938
Firefox: Although the onsignalingstatechange property is supported, the signalingstatechange event is not fired as an Event object. See bug 1075133.Firefox for Android: Although the onsignalingstatechange property is supported, the signalingstatechange event is not fired as an Event object. See bug 1075133.
api.RTCRtpReceiver 📋Firefox12/1/2014 Safari9/19/20171023
api.RTCRtpReceiver.track 📋Firefox12/1/2014 Safari9/19/20171023
api.RTCRtpSender 📋Firefox12/1/2014 Safari9/19/20171023
api.RTCRtpSender.track 📋Firefox12/1/2014 Safari9/19/20171023
api.RTCSessionDescription 📋Firefox1/26/2016 Safari9/19/2017602
api.RTCSessionDescription.RTCSessionDescription Firefox1/26/2016 Safari9/19/2017602
api.RTCSessionDescription.sdp 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCSessionDescription.toJSON 📋Firefox9/17/2013 Safari9/19/20171463
api.RTCSessionDescription.type 📋Firefox6/25/2013 Safari9/19/20171547
api.SubtleCrypto 📋Firefox12/1/2014 Safari9/19/20171023
Node.js: Available as a part of the crypto module.
api.performance.worker_support Firefox12/1/2014 Safari9/19/20171023
Node.js: Available as a part of the perf_hooks module.
javascript.operators.new_target 📋Firefox9/22/2015 Safari9/19/2017728

2017/8

API First Browser Date Last Browser Date Days Notes
api.CSSStyleSheet.insertRule.index_parameter_optional Safari6/23/2003 Firefox8/8/20175160
api.Selection.empty 📋Safari4/15/2005 Firefox8/8/20174498
api.Selection.setPosition 📋Safari4/15/2005 Firefox8/8/20174498
javascript.builtins.Float32Array.Float32Array.constructor_without_parameters Safari7/20/2011 Firefox8/8/20172211
javascript.builtins.Float64Array.Float64Array.constructor_without_parameters Safari7/20/2011 Firefox8/8/20172211
javascript.builtins.Int16Array.Int16Array.constructor_without_parameters Safari7/20/2011 Firefox8/8/20172211
javascript.builtins.Int32Array.Int32Array.constructor_without_parameters Safari7/20/2011 Firefox8/8/20172211
javascript.builtins.Int8Array.Int8Array.constructor_without_parameters Safari7/20/2011 Firefox8/8/20172211
javascript.builtins.String.toLocaleLowerCase.locales_parameter Edge7/29/2015 Firefox8/8/2017741
Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.String.toLocaleUpperCase.locales_parameter Edge7/29/2015 Firefox8/8/2017741
Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.TypedArray.constructor_without_parameters Safari7/20/2011 Firefox8/8/20172211
javascript.builtins.Uint16Array.Uint16Array.constructor_without_parameters Safari7/20/2011 Firefox8/8/20172211
javascript.builtins.Uint32Array.Uint32Array.constructor_without_parameters Safari7/20/2011 Firefox8/8/20172211
javascript.builtins.Uint8Array.Uint8Array.constructor_without_parameters Safari7/20/2011 Firefox8/8/20172211
javascript.builtins.Uint8ClampedArray.Uint8ClampedArray.constructor_without_parameters Safari7/20/2011 Firefox8/8/20172211

2017/6

API First Browser Date Last Browser Date Days Notes
api.Request.Request.cross_origin_stripped Safari3/27/2017 Firefox6/13/201778

2017/4

API First Browser Date Last Browser Date Days Notes
api.CSSNamespaceRule 📋Edge7/29/2015 Firefox4/19/2017630
api.CompositionEvent.CompositionEvent 📋Safari10/22/2013 Firefox4/19/20171275
api.Event.cancelBubble 📋Safari6/23/2003 Firefox4/19/20175049
Chrome: Starting with Chrome 58 and Opera 45, setting this property to false does nothing, as per spec discussion.Chrome Android: Starting with Chrome Android 58 and Opera 45, setting this property to false does nothing, as per spec discussion.Firefox: Only supported for UIEvent, not all Event objects.Firefox for Android: Only supported for UIEvent, not all Event objects.Node.js: This is not used in Node.js and is provided purely for completeness.Quest Browser: Starting with Quest Browser 5.0 and Opera 45, setting this property to false does nothing, as per spec discussion.Opera: Starting with Chrome 58 and Opera 45, setting this property to false does nothing, as per spec discussion.Opera Android: Starting with Chrome 58 and Opera 45, setting this property to false does nothing, as per spec discussion.Samsung Internet: Starting with Samsung Internet 7.0 and Opera 45, setting this property to false does nothing, as per spec discussion.WebView Android: Starting with WebView Android 58 and Opera 45, setting this property to false does nothing, as per spec discussion.
api.MouseEvent.x 📋Safari3/18/2008 Firefox4/19/20173319
api.MouseEvent.y 📋Safari3/18/2008 Firefox4/19/20173319
api.Selection.setBaseAndExtent 📋Safari4/15/2005 Firefox4/19/20174387
api.WEBGL_debug_renderer_info 📋Edge7/29/2015 Firefox4/19/2017630
Firefox: Deprecated, and may be removed in a future release (see bug 1722782).Firefox for Android: Deprecated, and may be removed in a future release (see bug 1722782).
javascript.builtins.Intl.DateTimeFormat.resolvedOptions.computed_timezone Edge8/2/2016 Firefox4/19/2017260
javascript.statements.for_of.closing_iterators Safari10/22/2013 Firefox4/19/20171275
api.CanvasRenderingContext2D.imageSmoothingEnabled 📋Safari3/21/2016 Edge4/5/2017380
api.Element.closest 📋Safari7/25/2012 Edge4/5/20171715
api.Element.matches 📋Safari10/16/2014 Edge4/5/2017902
Firefox: Before Firefox 4, invalid selector strings caused false to be returned instead of throwing an exception.Firefox: See bug 1119718 for removal.Firefox for Android: See bug 1119718 for removal.
api.Range.Range 📋Firefox9/17/2013 Edge4/5/20171296
api.Range.isPointInRange 📋Firefox11/9/2004 Edge4/5/20174530
api.Request.Request.init_referrer_parameter 📋Firefox6/7/2016 Edge4/5/2017302
api.Window.storage_event 📋Safari6/8/2009 Edge4/5/20172858
javascript.builtins.AsyncFunction 📋Firefox3/7/2017 Edge4/5/201729
javascript.builtins.AsyncFunction.AsyncFunction 📋Firefox3/7/2017 Edge4/5/201729
javascript.builtins.Date.@@toPrimitive 📋Firefox1/26/2016 Edge4/5/2017435
javascript.builtins.Date.UTC.optional_monthIndex Firefox3/22/2011 Edge4/5/20172206
javascript.builtins.Function.@@hasInstance 📋Safari9/20/2016 Edge4/5/2017197
javascript.builtins.Object.getOwnPropertyDescriptors 📋Safari9/20/2016 Edge4/5/2017197
javascript.builtins.String.padEnd 📋Firefox8/2/2016 Edge4/5/2017246
javascript.builtins.String.padStart 📋Firefox8/2/2016 Edge4/5/2017246
javascript.builtins.Symbol.@@toPrimitive 📋Firefox1/26/2016 Edge4/5/2017435
javascript.builtins.Symbol.hasInstance 📋Safari9/20/2016 Edge4/5/2017197
javascript.builtins.Symbol.isConcatSpreadable 📋Firefox8/2/2016 Edge4/5/2017246
javascript.builtins.Symbol.toPrimitive 📋Firefox1/26/2016 Edge4/5/2017435
javascript.builtins.Symbol.toStringTag 📋Safari9/20/2016 Edge4/5/2017197
javascript.functions.method_definitions.async_methods Firefox3/7/2017 Edge4/5/201729
javascript.operators.async_function 📋Firefox3/7/2017 Edge4/5/201729
javascript.statements.async_function 📋Firefox3/7/2017 Edge4/5/201729

2017/3

API First Browser Date Last Browser Date Days Notes
api.ClipboardEvent 📋Firefox6/25/2013 Safari3/27/20171371
Firefox: When pasting multiple files, only returns the first file. See bug 1954680.Firefox: Before Firefox 140, when pasting multiple files, and the first file was not acceptable, returned no file. See bug 1961170.Firefox for Android: When pasting multiple files, only returns the first file. See bug 1954680.Firefox for Android: Before Firefox for Android 140, when pasting multiple files, and the first file was not acceptable, returned no file. See bug 1961170.
api.ClipboardEvent.clipboardData 📋Firefox6/25/2013 Safari3/27/20171371
api.Document.dir 📋Firefox11/9/2004 Safari3/27/20174521
Chrome: Only supported for HTMLDocument, not all Document objects.Chrome Android: Only supported for HTMLDocument, not all Document objects.Firefox: Incorrect behavior before Firefox 23.Firefox for Android: Incorrect behavior before Firefox for Android 23.Opera: Only supported for HTMLDocument, not all Document objects.Opera Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.Samsung Internet: Only supported for HTMLDocument, not all Document objects.WebView Android: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.exitPointerLock 📋Edge11/12/2015 Safari3/27/2017501
api.Document.pointerLockElement 📋Edge11/12/2015 Safari3/27/2017501
api.Document.pointerlockchange_event 📋Edge11/12/2015 Safari3/27/2017501
api.Document.pointerlockerror_event 📋Edge11/12/2015 Safari3/27/2017501
api.Document.rootElement 📋Edge7/29/2015 Safari3/27/2017607
api.Element.requestPointerLock 📋Edge11/12/2015 Safari3/27/2017501
Chrome: From version 92, returns a promise instead of undefined. The behavior reflects a specification change.Edge: From version 92, returns a promise instead of undefined. The behavior reflects a specification change.Opera: From version 78, returns a promise instead of undefined. The behavior reflects a specification change.Safari: From version 18.4, returns a promise instead of undefined. The behavior reflects a specification change.Samsung Internet: From version 16, returns a promise instead of undefined. The behavior reflects a specification change.
api.Gamepad 📋Firefox4/29/2014 Safari3/27/20171063
api.Gamepad.axes 📋Firefox4/29/2014 Safari3/27/20171063
api.Gamepad.buttons 📋Firefox4/29/2014 Safari3/27/20171063
api.Gamepad.connected 📋Firefox4/29/2014 Safari3/27/20171063
api.Gamepad.id 📋Firefox4/29/2014 Safari3/27/20171063
api.Gamepad.index 📋Firefox4/29/2014 Safari3/27/20171063
api.Gamepad.mapping 📋Firefox4/29/2014 Safari3/27/20171063
api.Gamepad.timestamp 📋Firefox4/29/2014 Safari3/27/20171063
api.GamepadButton 📋Firefox4/29/2014 Safari3/27/20171063
api.GamepadButton.pressed 📋Firefox4/29/2014 Safari3/27/20171063
api.GamepadButton.value 📋Firefox4/29/2014 Safari3/27/20171063
api.GamepadEvent 📋Firefox4/29/2014 Safari3/27/20171063
api.GamepadEvent.GamepadEvent 📋Firefox4/29/2014 Safari3/27/20171063
api.GamepadEvent.gamepad 📋Firefox4/29/2014 Safari3/27/20171063
api.HTMLAnchorElement.download 📋Firefox4/2/2013 Safari3/27/20171455
api.HTMLAreaElement.download 📋Firefox4/2/2013 Safari3/27/20171455
api.HTMLAreaElement.toString 📋Firefox6/25/2013 Safari3/27/20171371
api.HTMLCanvasElement.getContext.webgl_context.options_alpha_parameter 📋Firefox6/10/2014 Safari3/27/20171021
api.HTMLCanvasElement.getContext.webgl_context.options_failIfMajorPerformanceCaveat_parameter 📋Edge7/29/2015 Safari3/27/2017607
api.HTMLHRElement.color 📋Firefox11/9/2004 Safari3/27/20174521
api.HTMLIFrameElement.allowFullscreen 📋Firefox6/25/2013 Safari3/27/20171371
Safari on iOS: Only available on iPad, not on iPhone.Safari on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.WebView on iOS: Only available on iPad, not on iPhone.WebView on iOS: Shows an overlay button which can not be disabled. Swiping down exits fullscreen mode, making it unsuitable for some use cases like games.
api.HTMLOutputElement.reportValidity 📋Edge8/2/2016 Safari3/27/2017237
api.HTMLSourceElement.sizes 📋Firefox5/12/2015 Safari3/27/2017685
Safari: The sizes attribute is supported since Safari 9.1.Safari on iOS: The sizes attribute is supported since Safari on iOS 9.1.WebView on iOS: The sizes attribute is supported since WebView on iOS 9.1.
api.HTMLSourceElement.srcset 📋Firefox5/12/2015 Safari3/27/2017685
Safari: The srcset attribute is supported since Safari 9.1.Safari on iOS: The srcset attribute is supported since Safari on iOS 9.1.WebView on iOS: The srcset attribute is supported since WebView on iOS 9.1.
api.Headers 📋Firefox7/2/2015 Safari3/27/2017634
api.Headers.Headers 📋Firefox7/2/2015 Safari3/27/2017634
api.Headers.append 📋Firefox7/2/2015 Safari3/27/2017634
api.Headers.delete 📋Firefox7/2/2015 Safari3/27/2017634
api.Headers.forEach Firefox6/7/2016 Safari3/27/2017293
api.Headers.get 📋Firefox7/2/2015 Safari3/27/2017634
Chrome: Before version 57, get() returns only the first value for the specified header.Chrome Android: Before version 57, get() returns only the first value for the specified header.Firefox: Before version 52, get() returns only the first value for the specified header.Firefox for Android: Before version 52, get() returns only the first value for the specified header.Quest Browser: Before version 5.0, get() returns only the first value for the specified header.Opera: Before version 44, get() returns only the first value for the specified header.Opera Android: Before version 43, get() returns only the first value for the specified header.Samsung Internet: Before version 7.0, get() returns only the first value for the specified header.WebView Android: Before version 57, get() returns only the first value for the specified header.
api.Headers.has 📋Firefox7/2/2015 Safari3/27/2017634
api.Headers.set 📋Firefox7/2/2015 Safari3/27/2017634
api.KeyboardEvent.getModifierState 📋Firefox8/28/2012 Safari3/27/20171672
api.KeyboardEvent.getModifierState.key_parameter_alt Firefox8/28/2012 Safari3/27/20171672
api.KeyboardEvent.getModifierState.key_parameter_capslock Firefox8/28/2012 Safari3/27/20171672
api.KeyboardEvent.getModifierState.key_parameter_control Firefox8/28/2012 Safari3/27/20171672
api.KeyboardEvent.getModifierState.key_parameter_shift Firefox8/28/2012 Safari3/27/20171672
api.KeyboardEvent.key 📋Firefox8/6/2013 Safari3/27/20171329
Chrome: When selecting an autocomplete suggestion, a keydown event fires where the event's key property is undefined. See bug 41425904.Chrome Android: When selecting an autocomplete suggestion, a keydown event fires where the event's key property is undefined. See bug 41425904.Internet Explorer: IE's implementation does not completely match the current spec because it is based on an older version of the spec.Quest Browser: When selecting an autocomplete suggestion, a keydown event fires where the event's key property is undefined. See bug 41425904.Opera: When selecting an autocomplete suggestion, a keydown event fires where the event's key property is undefined. See bug 41425904.Opera Android: When selecting an autocomplete suggestion, a keydown event fires where the event's key property is undefined. See bug 41425904.Samsung Internet: When selecting an autocomplete suggestion, a keydown event fires where the event's key property is undefined. See bug 41425904.WebView Android: When selecting an autocomplete suggestion, a keydown event fires where the event's key property is undefined. See bug 41425904.
api.KeyboardEvent.key.non_printable_keys Firefox8/6/2013 Safari3/27/20171329
Internet Explorer: IE's implementation does not completely match the current spec because it is based on an older version of the spec.
api.KeyboardEvent.key.printable_key Firefox4/29/2014 Safari3/27/20171063
Internet Explorer: IE's implementation does not completely match the current spec because it is based on an older version of the spec.
api.KeyboardEvent.repeat 📋Firefox3/18/2014 Safari3/27/20171105
Chrome: Before Chrome 139, on Linux under X11, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Chrome: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Chrome Android: Before Chrome Android 139, on Linux under X11, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Chrome Android: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Quest Browser: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Opera: Before Opera 123, on Linux under X11, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Opera: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Opera Android: Before Opera Android 91, on Linux under X11, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Opera Android: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.Samsung Internet: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.WebView Android: Before WebView Android 139, on Linux under X11, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.WebView Android: On Windows and Linux, if multiple keys are held down, a keydown event for the most recently pressed key will trigger with repeat incorrectly set to false. See bug 40940886.
api.Navigator.getGamepads 📋Firefox4/29/2014 Safari3/27/20171063
api.PerformanceTiming.toJSON 📋Firefox10/29/2013 Safari3/27/20171245
api.Request 📋Firefox7/2/2015 Safari3/27/2017634
Chrome: Only available in service workers.Chrome Android: Only available in service workers.Opera: Only available in service workers.Opera Android: Only available in service workers.WebView Android: Only available in service workers.
api.Request.Request 📋Firefox7/2/2015 Safari3/27/2017634
Chrome: From Chrome 47, default values for the init argument's properties changed. mode defaults to same-origin (from no-cors). credentials defaults to include (from same-origin). redirect defaults to follow (from manual).Chrome Android: From Chrome Android 47, default values for the init argument's properties changed. mode defaults to same-origin (from no-cors). credentials defaults to include (from same-origin). redirect defaults to follow (from manual).Deno: Fetching with a "manual" redirect mode does not result in a "opaqueredirect" response, but a regular response.Quest Browser: From Quest Browser 5.0, default values for the init argument's properties changed. mode defaults to same-origin (from no-cors). credentials defaults to include (from same-origin). redirect defaults to follow (from manual).Samsung Internet: From Samsung Internet 5.0, default values for the init argument's properties changed. mode defaults to same-origin (from no-cors). credentials defaults to include (from same-origin). redirect defaults to follow (from manual).WebView Android: From WebView Android 47, default values for the init argument's properties changed. mode defaults to same-origin (from no-cors). credentials defaults to include (from same-origin). redirect defaults to follow (from manual).
api.Request.arrayBuffer 📋Firefox7/2/2015 Safari3/27/2017634
api.Request.blob 📋Firefox7/2/2015 Safari3/27/2017634
api.Request.bodyUsed 📋Firefox7/2/2015 Safari3/27/2017634
api.Request.cache 📋Edge8/2/2016 Safari3/27/2017237
api.Request.clone 📋Firefox7/2/2015 Safari3/27/2017634
api.Request.credentials 📋Firefox7/2/2015 Safari3/27/2017634
api.Request.headers 📋Firefox7/2/2015 Safari3/27/2017634
api.Request.integrity 📋Edge8/2/2016 Safari3/27/2017237
api.Request.json 📋Firefox7/2/2015 Safari3/27/2017634
api.Request.method 📋Firefox7/2/2015 Safari3/27/2017634
api.Request.mode 📋Firefox7/2/2015 Safari3/27/2017634
api.Request.redirect 📋Firefox12/15/2015 Safari3/27/2017468
Deno: Fetching with a "manual" redirect mode does not result in a "opaqueredirect" response, but a regular response.
api.Request.referrer 📋Firefox7/2/2015 Safari3/27/2017634
api.Request.referrerPolicy 📋Firefox6/7/2016 Safari3/27/2017293
api.Request.text 📋Firefox7/2/2015 Safari3/27/2017634
api.Request.url 📋Firefox7/2/2015 Safari3/27/2017634
Chrome: Fragment support added in Chrome 59.Chrome Android: Fragment support added in Chrome Android 59.Quest Browser: Fragment support added in Quest Browser 5.0.Opera: Fragment support added in Opera 46.Opera Android: Fragment support added in Opera 46.Samsung Internet: Fragment support added in Samsung Internet 7.0.WebView Android: Fragment support added in WebView Android 59.
api.Response 📋Firefox7/2/2015 Safari3/27/2017634
Chrome: Only available in service workers.Chrome Android: Only available in service workers.Opera: Only available in service workers.Opera Android: Only available in service workers.WebView Android: Only available in service workers.
api.Response.Response 📋Firefox7/2/2015 Safari3/27/2017634
api.Response.arrayBuffer 📋Firefox7/2/2015 Safari3/27/2017634
api.Response.blob 📋Firefox7/2/2015 Safari3/27/2017634
api.Response.bodyUsed 📋Firefox7/2/2015 Safari3/27/2017634
api.Response.clone 📋Firefox7/2/2015 Safari3/27/2017634
api.Response.headers 📋Firefox7/2/2015 Safari3/27/2017634
api.Response.json 📋Firefox7/2/2015 Safari3/27/2017634
api.Response.ok 📋Firefox7/2/2015 Safari3/27/2017634
api.Response.status 📋Firefox7/2/2015 Safari3/27/2017634
api.Response.statusText 📋Firefox7/2/2015 Safari3/27/2017634
api.Response.text 📋Firefox7/2/2015 Safari3/27/2017634
api.Response.type 📋Firefox7/2/2015 Safari3/27/2017634
api.Response.url 📋Firefox7/2/2015 Safari3/27/2017634
api.fetch 📋Firefox7/2/2015 Safari3/27/2017634
Deno: Fetching with a "manual" redirect mode does not result in a "opaqueredirect" response, but a regular response.
javascript.builtins.Object.entries 📋Firefox6/7/2016 Safari3/27/2017293
javascript.builtins.Object.values 📋Firefox6/7/2016 Safari3/27/2017293
javascript.operators.await 📋Edge8/2/2016 Safari3/27/2017237
javascript.operators.exponentiation 📋Edge8/2/2016 Safari3/27/2017237
javascript.operators.exponentiation_assignment 📋Edge8/2/2016 Safari3/27/2017237
javascript.statements.class 📋Edge11/12/2015 Safari3/27/2017501
Chrome: Strict mode is required.Chrome Android: Strict mode is required.Opera: Strict mode is required.Opera Android: Strict mode is required.Samsung Internet: Strict mode is required.WebView Android: Strict mode is required.
api.Document.selectionchange_event 📋Safari7/20/2011 Firefox3/7/20172057
api.Element.focusin_event 📋Safari6/7/2010 Firefox3/7/20172465
Chrome: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.Chrome Android: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.Edge: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.Firefox: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.Firefox for Android: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.Quest Browser: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.Samsung Internet: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.WebView Android: The onfocusin event handler property is not supported. To listen to this event, use element.addEventListener('focusin', function() {});.
api.Element.focusout_event 📋Safari6/7/2010 Firefox3/7/20172465
Chrome: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.Chrome Android: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.Edge: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.Firefox: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.Firefox for Android: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.Quest Browser: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.Samsung Internet: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.WebView Android: The onfocusout event handler property is not supported. To listen to this event, use element.addEventListener('focusout', function() {});.
api.Node.selectstart_event 📋Safari4/15/2005 Firefox3/7/20174344
javascript.builtins.Date.toLocaleDateString.iana_time_zone_names Safari10/22/2013 Firefox3/7/20171232
javascript.builtins.Date.toLocaleString.iana_time_zone_names Safari10/22/2013 Firefox3/7/20171232
javascript.builtins.Date.toLocaleTimeString.iana_time_zone_names Safari10/22/2013 Firefox3/7/20171232
javascript.builtins.Float32Array.Float32Array.iterable_allowed Edge8/2/2016 Firefox3/7/2017217
javascript.builtins.Float64Array.Float64Array.iterable_allowed Edge8/2/2016 Firefox3/7/2017217
javascript.builtins.Int16Array.Int16Array.iterable_allowed Edge8/2/2016 Firefox3/7/2017217
javascript.builtins.Int32Array.Int32Array.iterable_allowed Edge8/2/2016 Firefox3/7/2017217
javascript.builtins.Int8Array.Int8Array.iterable_allowed Edge8/2/2016 Firefox3/7/2017217
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeZone_parameter.iana_time_zones Edge8/2/2016 Firefox3/7/2017217
javascript.builtins.TypedArray.iterable_in_constructor Edge8/2/2016 Firefox3/7/2017217
javascript.builtins.Uint16Array.Uint16Array.iterable_allowed Edge8/2/2016 Firefox3/7/2017217
javascript.builtins.Uint32Array.Uint32Array.iterable_allowed Edge8/2/2016 Firefox3/7/2017217
javascript.builtins.Uint8Array.Uint8Array.iterable_allowed Edge8/2/2016 Firefox3/7/2017217
javascript.builtins.Uint8ClampedArray.Uint8ClampedArray.iterable_allowed Edge8/2/2016 Firefox3/7/2017217
javascript.functions.arrow_functions.trailing_comma Edge7/29/2015 Firefox3/7/2017587
javascript.grammar.trailing_commas.trailing_commas_in_functions Edge8/2/2016 Firefox3/7/2017217
javascript.operators.function.trailing_comma Edge8/2/2016 Firefox3/7/2017217
javascript.statements.function.trailing_comma_in_parameters Edge8/2/2016 Firefox3/7/2017217
javascript.statements.generator_function.trailing_comma_in_parameters Edge8/2/2016 Firefox3/7/2017217

2017/1

API First Browser Date Last Browser Date Days Notes
api.DOMTokenList.trim_whitespace Edge7/29/2015 Firefox1/24/2017545
javascript.builtins.TypedArray.toLocaleString 📋Safari7/20/2011 Firefox1/24/20172015
javascript.builtins.TypedArray.toString 📋Safari7/20/2011 Firefox1/24/20172015

2016/11

API First Browser Date Last Browser Date Days Notes
api.DataTransferItem 📋Safari7/20/2011 Firefox11/15/20161945
api.DataTransferItem.getAsFile 📋Safari7/20/2011 Firefox11/15/20161945
api.DataTransferItem.getAsString 📋Safari7/20/2011 Firefox11/15/20161945
api.DataTransferItem.kind 📋Safari7/20/2011 Firefox11/15/20161945
api.DataTransferItem.type 📋Safari7/20/2011 Firefox11/15/20161945
api.DataTransferItemList 📋Safari7/25/2012 Firefox11/15/20161574
api.DataTransferItemList.add 📋Safari7/25/2012 Firefox11/15/20161574
api.DataTransferItemList.clear 📋Safari7/25/2012 Firefox11/15/20161574
api.DataTransferItemList.length 📋Safari7/25/2012 Firefox11/15/20161574
api.DataTransferItemList.remove 📋Safari7/25/2012 Firefox11/15/20161574

2016/9

API First Browser Date Last Browser Date Days Notes
api.Document.execCommand.copy Edge7/29/2015 Safari9/20/2016419
api.Document.execCommand.cut Edge7/29/2015 Safari9/20/2016419
api.ErrorEvent.error 📋Firefox7/22/2014 Safari9/20/2016791
api.Event.isTrusted 📋Firefox11/29/2005 Safari9/20/20163948
Chrome: Starting with Chrome 53 and Opera 40, untrusted events do not invoke the default action.Chrome Android: Starting with Chrome Android 53 and Opera 40, untrusted events do not invoke the default action.Internet Explorer: In Internet Explorer, all events are trusted except those that are created with the createEvent() method.Quest Browser: Starting with Quest Browser 5.0 and Opera 40, untrusted events do not invoke the default action.Opera: Starting with Chrome 53 and Opera 40, untrusted events do not invoke the default action.Opera Android: Starting with Chrome 53 and Opera 40, untrusted events do not invoke the default action.Samsung Internet: Starting with Samsung Internet 6.0 and Opera 40, untrusted events do not invoke the default action.WebView Android: Starting with version 53, untrusted events do not invoke the default action.
api.HTMLCanvasElement.webglcontextcreationerror_event 📋Safari7/20/2011 Firefox9/20/20161889
api.HTMLDataElement 📋Firefox6/25/2013 Safari9/20/20161183
api.HTMLDataElement.value 📋Firefox6/25/2013 Safari9/20/20161183
api.HTMLMediaElement.crossOrigin 📋Firefox6/25/2013 Safari9/20/20161183
api.HTMLTimeElement 📋Firefox6/25/2013 Safari9/20/20161183
api.HTMLTimeElement.dateTime 📋Firefox6/25/2013 Safari9/20/20161183
api.IDBCursor.worker_support Firefox3/31/2015 Safari9/20/2016539
api.IDBCursorWithValue.worker_support Edge7/29/2015 Safari9/20/2016419
api.IDBDatabase.worker_support Firefox3/31/2015 Safari9/20/2016539
api.IDBFactory.worker_support Firefox3/31/2015 Safari9/20/2016539
api.IDBIndex.worker_support Firefox3/31/2015 Safari9/20/2016539
api.IDBKeyRange.worker_support Firefox3/31/2015 Safari9/20/2016539
api.IDBObjectStore.worker_support Firefox3/31/2015 Safari9/20/2016539
api.IDBOpenDBRequest.worker_support Firefox3/31/2015 Safari9/20/2016539
api.IDBRequest.worker_support Firefox3/31/2015 Safari9/20/2016539
api.IDBTransaction.worker_support Firefox3/31/2015 Safari9/20/2016539
api.IDBVersionChangeEvent.worker_support Firefox3/31/2015 Safari9/20/2016539
api.SpeechSynthesis 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesis.cancel 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesis.getVoices 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesis.pause 📋Safari10/22/2013 Firefox9/20/20161064
Chrome Android: In Android, pause() ends the current utterance. pause() behaves the same as cancel().Firefox for Android: In Android, pause() ends the current utterance. pause() behaves the same as cancel().Quest Browser: In Android, pause() ends the current utterance. pause() behaves the same as cancel().Samsung Internet: In Android, pause() ends the current utterance. pause() behaves the same as cancel().
api.SpeechSynthesis.paused 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesis.pending 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesis.resume 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesis.speak 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesis.speaking 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisEvent 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisEvent.charIndex 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisEvent.elapsedTime 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisEvent.name 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance.SpeechSynthesisUtterance 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance.boundary_event 📋Safari10/22/2013 Firefox9/20/20161064
Chrome: The boundary event does not fire as expected. See bug 40715888.Chrome Android: The boundary event does not fire as expected. See bug 40715888.Quest Browser: The boundary event does not fire as expected. See bug 40715888.
api.SpeechSynthesisUtterance.end_event 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance.error_event 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance.lang 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance.mark_event 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance.pause_event 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance.pitch 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance.rate 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance.resume_event 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance.start_event 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance.text 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance.voice 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisUtterance.volume 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisVoice 📋Safari10/22/2013 Firefox9/20/20161064
Firefox: In Firefox, speech synthesis voices do not start loading until after the first call to window.speechSynthesis.getVoices(). A way to mitigate this issue is to call the method at the beginning of page load, then wait a few seconds before calling the method again. Voices will remain loaded until all tabs that have called this method have been closed.
api.SpeechSynthesisVoice.default 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisVoice.lang 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisVoice.localService 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisVoice.name 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisVoice.voiceURI 📋Safari10/22/2013 Firefox9/20/20161064
api.URL.hostname 📋Firefox6/25/2013 Safari9/20/20161183
api.URL.href 📋Firefox6/25/2013 Safari9/20/20161183
api.URL.origin 📋Firefox12/10/2013 Safari9/20/20161015
Firefox: Before Firefox 49, Results for URL using the blob scheme incorrectly returned null.Firefox for Android: Before Firefox for Android 49, Results for URL using the blob scheme incorrectly returned null.
api.URL.password 📋Firefox12/10/2013 Safari9/20/20161015
api.URL.pathname 📋Firefox6/25/2013 Safari9/20/20161183
Firefox: Before Firefox 53, pathname and search returned wrong values for custom protocols. Given protocol:host/x?a=true&b=false, pathname would return "/x?a=true&b=false" and search would return "", rather than "/x" and "?a=true&b=false" respectively. See bug 1310483.Firefox for Android: Before Firefox for Android 53, pathname and search returned wrong values for custom protocols. Given protocol:host/x?a=true&b=false, pathname would return "/x?a=true&b=false" and search would return "", rather than "/x" and "?a=true&b=false" respectively. See bug 1310483.
api.URL.port 📋Firefox6/25/2013 Safari9/20/20161183
api.URL.protocol 📋Firefox6/25/2013 Safari9/20/20161183
api.URL.search 📋Firefox6/25/2013 Safari9/20/20161183
Firefox: Before Firefox 53, pathname and search returned wrong values for custom protocols. Given protocol:host/x?a=true&b=false, pathname would return "/x?a=true&b=false" and search would return "", rather than "/x" and "?a=true&b=false" respectively. See bug 1310483.Firefox for Android: Before Firefox for Android 53, pathname and search returned wrong values for custom protocols. Given protocol:host/x?a=true&b=false, pathname would return "/x?a=true&b=false" and search would return "", rather than "/x" and "?a=true&b=false" respectively. See bug 1310483.
api.URL.username 📋Firefox12/10/2013 Safari9/20/20161015
api.WebGLContextEvent 📋Safari7/20/2011 Firefox9/20/20161889
api.WebGLContextEvent.WebGLContextEvent 📋Safari7/25/2012 Firefox9/20/20161518
api.WebGLContextEvent.statusMessage 📋Safari7/20/2011 Firefox9/20/20161889
api.Window.speechSynthesis 📋Safari10/22/2013 Firefox9/20/20161064
api.WorkerLocation.origin 📋Firefox4/29/2014 Safari9/20/2016875
api.WorkerNavigator.appCodeName 📋Firefox6/30/2009 Safari9/20/20162639
api.WorkerNavigator.language 📋Firefox6/30/2009 Safari9/20/20162639
Firefox: Before Firefox 4, this property's value was also part of the user agent string, as reported by navigator.userAgent. Starting in Firefox 5, this property's value is based on the value of the Accept-Language HTTP header.Internet Explorer: Closest available (non-standard) properties are userLanguage and browserLanguage.
api.WorkerNavigator.product 📋Firefox6/30/2009 Safari9/20/20162639
api.XMLDocument 📋Firefox11/9/2004 Safari9/20/20164333
Chrome: Implemented as an alias for Document.Chrome Android: Implemented as an alias for Document.Opera: Implemented as an alias for Document.Opera Android: Implemented as an alias for Document.Safari: Implemented as an alias for Document.Safari on iOS: Implemented as an alias for Document.Samsung Internet: Implemented as an alias for Document.WebView Android: Implemented as an alias for Document.WebView on iOS: Implemented as an alias for Document.
api.atob.worker_support Firefox3/22/2011 Safari9/20/20162009
api.btoa.worker_support Firefox3/22/2011 Safari9/20/20162009
api.indexedDB.worker_support Firefox3/31/2015 Safari9/20/2016539
javascript.builtins.Array.@@iterator 📋Firefox2/24/2015 Safari9/20/2016574
Firefox: A placeholder property named @@iterator is used.Firefox: A placeholder property named iterator is used.Firefox for Android: A placeholder property named @@iterator is used.Firefox for Android: A placeholder property named iterator is used.
javascript.builtins.Array.@@unscopables 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.ArrayBuffer.@@species 📋Edge11/12/2015 Safari9/20/2016313
javascript.builtins.Date.toLocaleDateString.locales_parameter Firefox4/29/2014 Safari9/20/2016875
Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Date.toLocaleDateString.options_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Date.toLocaleString.locales_parameter Firefox4/29/2014 Safari9/20/2016875
Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Date.toLocaleString.options_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Date.toLocaleTimeString.locales_parameter Firefox4/29/2014 Safari9/20/2016875
Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Date.toLocaleTimeString.options_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Function.length.configurable_true Firefox3/31/2015 Safari9/20/2016539
javascript.builtins.Function.name.configurable_true Firefox5/12/2015 Safari9/20/2016497
javascript.builtins.Generator 📋Firefox12/10/2013 Safari9/20/20161015
javascript.builtins.Generator.next 📋Firefox12/10/2013 Safari9/20/20161015
javascript.builtins.Generator.return 📋Firefox5/12/2015 Safari9/20/2016497
javascript.builtins.Generator.throw 📋Firefox12/10/2013 Safari9/20/20161015
javascript.builtins.GeneratorFunction 📋Firefox12/10/2013 Safari9/20/20161015
javascript.builtins.GeneratorFunction.GeneratorFunction 📋Firefox12/10/2013 Safari9/20/20161015
javascript.builtins.Intl 📋Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.Collator 📋Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the Collator() constructor for more details.
javascript.builtins.Intl.Collator.Collator 📋Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the Collator instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Intl.Collator.compare 📋Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the Collator() constructor for more details.
javascript.builtins.Intl.Collator.resolvedOptions 📋Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the Collator() constructor for more details.
javascript.builtins.Intl.Collator.supportedLocalesOf 📋Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Intl.DateTimeFormat 📋Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the DateTimeFormat() constructor for more details.
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat 📋Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the DateTimeFormat instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.locales_parameter Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the DateTimeFormat instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeZoneName_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.DateTimeFormat.DateTimeFormat.options_parameter.options_timeZone_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.DateTimeFormat.format 📋Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the DateTimeFormat() constructor for more details.
javascript.builtins.Intl.DateTimeFormat.resolvedOptions 📋Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the DateTimeFormat() constructor for more details.
javascript.builtins.Intl.DateTimeFormat.supportedLocalesOf 📋Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Intl.NumberFormat 📋Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the NumberFormat() constructor for more details.
javascript.builtins.Intl.NumberFormat.NumberFormat 📋Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.NumberFormat.NumberFormat.locales_parameter Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the NumberFormat instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_currency_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_localeMatcher_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_maximumFractionDigits_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_maximumSignificantDigits_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_minimumFractionDigits_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_minimumIntegerDigits_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_minimumSignificantDigits_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_style_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Intl.NumberFormat.NumberFormat.options_parameter.options_useGrouping_parameter Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the NumberFormat instance silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Intl.NumberFormat.format 📋Firefox4/29/2014 Safari9/20/2016875
Edge: Before Edge 18, numbers are rounded to 15 decimal digits. For example, new Intl.NumberFormat('en-US').format(1000000000000005) returns "1,000,000,000,000,010".Internet Explorer: In Internet Explorer 11, numbers are rounded to 15 decimal digits. For example, new Intl.NumberFormat('en-US').format(1000000000000005) returns "1,000,000,000,000,010".Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the NumberFormat() constructor for more details.
javascript.builtins.Intl.NumberFormat.resolvedOptions 📋Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. See the NumberFormat() constructor for more details.
javascript.builtins.Intl.NumberFormat.supportedLocalesOf 📋Firefox4/29/2014 Safari9/20/2016875
Node.js: Before version 13.0.0, only the locale data for en-US is available by default. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Iterator 📋Firefox11/20/2012 Safari9/20/20161400
javascript.builtins.Iterator.@@iterator 📋Firefox2/24/2015 Safari9/20/2016574
Firefox: A placeholder property named @@iterator is used.Firefox: A placeholder property named iterator is used.Firefox for Android: A placeholder property named @@iterator is used.Firefox for Android: A placeholder property named iterator is used.
javascript.builtins.Map.@@iterator 📋Firefox2/24/2015 Safari9/20/2016574
Firefox: A placeholder property named @@iterator is used.Firefox: A placeholder property named iterator is used.Firefox for Android: A placeholder property named @@iterator is used.Firefox for Android: A placeholder property named iterator is used.
javascript.builtins.Map.@@species 📋Firefox9/22/2015 Safari9/20/2016364
javascript.builtins.Number.toLocaleString.locales_parameter Firefox4/29/2014 Safari9/20/2016875
Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.Number.toLocaleString.options_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.Proxy 📋Firefox1/8/2013 Safari9/20/20161351
javascript.builtins.Proxy.Proxy 📋Firefox1/8/2013 Safari9/20/20161351
javascript.builtins.Proxy.handler.apply 📋Firefox1/8/2013 Safari9/20/20161351
javascript.builtins.Proxy.handler.construct 📋Firefox1/8/2013 Safari9/20/20161351
javascript.builtins.Proxy.handler.defineProperty 📋Firefox1/8/2013 Safari9/20/20161351
javascript.builtins.Proxy.handler.deleteProperty 📋Firefox1/8/2013 Safari9/20/20161351
javascript.builtins.Proxy.handler.get 📋Firefox1/8/2013 Safari9/20/20161351
javascript.builtins.Proxy.handler.getOwnPropertyDescriptor 📋Firefox1/8/2013 Safari9/20/20161351
javascript.builtins.Proxy.handler.has 📋Firefox1/8/2013 Safari9/20/20161351
javascript.builtins.Proxy.handler.isExtensible 📋Firefox7/22/2014 Safari9/20/2016791
javascript.builtins.Proxy.handler.ownKeys 📋Firefox1/8/2013 Safari9/20/20161351
Firefox: In Firefox 42, the implementation got updated to reflect the final ES2015 specification: The result is now checked if it is an array and if the array elements are either of type string or of type symbol. Enumerating duplicate own property names is not a failure anymore.Firefox for Android: In Firefox for Android 42, the implementation got updated to reflect the final ES2015 specification: The result is now checked if it is an array and if the array elements are either of type string or of type symbol. Enumerating duplicate own property names is not a failure anymore.
javascript.builtins.Proxy.handler.preventExtensions 📋Firefox6/25/2013 Safari9/20/20161183
javascript.builtins.Proxy.handler.set 📋Firefox1/8/2013 Safari9/20/20161351
javascript.builtins.Proxy.handler.setPrototypeOf 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Proxy.revocable 📋Firefox12/1/2014 Safari9/20/2016659
javascript.builtins.Reflect 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Reflect.apply 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Reflect.construct 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Reflect.defineProperty 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Reflect.deleteProperty 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Reflect.get 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Reflect.getOwnPropertyDescriptor 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Reflect.getPrototypeOf 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Reflect.has 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Reflect.isExtensible 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Reflect.ownKeys 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Reflect.preventExtensions 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Reflect.set 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.Reflect.setPrototypeOf 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.RegExp.@@match 📋Edge11/12/2015 Safari9/20/2016313
javascript.builtins.RegExp.@@search 📋Edge11/12/2015 Safari9/20/2016313
javascript.builtins.RegExp.@@species 📋Edge11/12/2015 Safari9/20/2016313
javascript.builtins.RegExp.sticky 📋Firefox6/17/2008 Safari9/20/20163017
javascript.builtins.RegExp.sticky.anchored_sticky_flag Edge11/12/2015 Safari9/20/2016313
javascript.builtins.RegExp.sticky.prototype_accessor Firefox5/12/2015 Safari9/20/2016497
javascript.builtins.RegExp.unicode 📋Edge7/29/2015 Safari9/20/2016419
Edge: Case folding is implemented in version 13Node.js: Case folding is implemented in version 8.6.0
javascript.builtins.Set.@@species 📋Firefox9/22/2015 Safari9/20/2016364
javascript.builtins.String.localeCompare.locales_parameter Firefox4/29/2014 Safari9/20/2016875
Deno: Only the locale data for en-US is available.Node.js: Before version 13.0.0, only the locale data for en-US is available by default. When other locales are specified, the function silently falls back to en-US. To make full ICU (locale) data available before version 13, see Node.js documentation on the --with-intl option and how to provide the data.
javascript.builtins.String.localeCompare.options_parameter Firefox4/29/2014 Safari9/20/2016875
javascript.builtins.String.normalize 📋Firefox7/22/2014 Safari9/20/2016791
javascript.builtins.Symbol.iterator 📋Firefox2/24/2015 Safari9/20/2016574
javascript.builtins.Symbol.species 📋Firefox9/22/2015 Safari9/20/2016364
javascript.builtins.TypedArray.@@iterator 📋Firefox2/24/2015 Safari9/20/2016574
Firefox: A placeholder property named @@iterator is used.Firefox: A placeholder property named iterator is used.Firefox for Android: A placeholder property named @@iterator is used.Firefox for Android: A placeholder property named iterator is used.
javascript.builtins.TypedArray.@@species 📋Edge11/12/2015 Safari9/20/2016313
javascript.builtins.TypedArray.copyWithin 📋Firefox12/1/2014 Safari9/20/2016659
javascript.builtins.TypedArray.entries 📋Firefox3/31/2015 Safari9/20/2016539
javascript.builtins.TypedArray.every 📋Firefox3/31/2015 Safari9/20/2016539
javascript.builtins.TypedArray.fill 📋Firefox3/31/2015 Safari9/20/2016539
javascript.builtins.TypedArray.filter 📋Firefox5/12/2015 Safari9/20/2016497
javascript.builtins.TypedArray.find 📋Firefox3/31/2015 Safari9/20/2016539
javascript.builtins.TypedArray.findIndex 📋Firefox3/31/2015 Safari9/20/2016539
javascript.builtins.TypedArray.forEach 📋Firefox5/12/2015 Safari9/20/2016497
javascript.builtins.TypedArray.from 📋Firefox5/12/2015 Safari9/20/2016497
javascript.builtins.TypedArray.includes 📋Firefox12/15/2015 Safari9/20/2016280
javascript.builtins.TypedArray.indexOf 📋Firefox3/31/2015 Safari9/20/2016539
Firefox: Starting with Firefox 47, this method will no longer return -0. For example, new Uint8Array([0]).indexOf(0, -0) will now always return +0.Firefox for Android: Starting with Firefox for Android 47, this method will no longer return -0. For example, new Uint8Array([0]).indexOf(0, -0) will now always return +0.
javascript.builtins.TypedArray.join 📋Firefox3/31/2015 Safari9/20/2016539
javascript.builtins.TypedArray.keys 📋Firefox3/31/2015 Safari9/20/2016539
javascript.builtins.TypedArray.lastIndexOf 📋Firefox3/31/2015 Safari9/20/2016539
Firefox: Starting with Firefox 47, this method will no longer return -0. For example, new Uint8Array([0]).lastIndexOf(0, -0) will now always return +0.Firefox for Android: Starting with Firefox for Android 47, this method will no longer return -0. For example, new Uint8Array([0]).lastIndexOf(0, -0) will now always return +0.
javascript.builtins.TypedArray.map 📋Firefox5/12/2015 Safari9/20/2016497
javascript.builtins.TypedArray.of 📋Firefox5/12/2015 Safari9/20/2016497
javascript.builtins.TypedArray.reduce 📋Firefox3/31/2015 Safari9/20/2016539
javascript.builtins.TypedArray.reduceRight 📋Firefox3/31/2015 Safari9/20/2016539
javascript.builtins.TypedArray.reverse 📋Firefox3/31/2015 Safari9/20/2016539
javascript.builtins.TypedArray.slice 📋Firefox5/12/2015 Safari9/20/2016497
javascript.builtins.TypedArray.some 📋Firefox3/31/2015 Safari9/20/2016539
javascript.builtins.TypedArray.sort 📋Edge7/29/2015 Safari9/20/2016419
javascript.builtins.TypedArray.values 📋Firefox3/31/2015 Safari9/20/2016539
javascript.functions.arrow_functions 📋Firefox6/25/2013 Safari9/20/20161183
Firefox: The initial implementation of arrow functions in Firefox made them automatically strict. This has been changed as of Firefox 24. The use of 'use strict'; is now required.Firefox: Before Firefox 39, a line terminator (\n) was incorrectly allowed after arrow function arguments. This has been fixed to conform to the ES2015 specification and code like () \n => {} will now throw a SyntaxError in this and later versions.Firefox for Android: The initial implementation of arrow functions in Firefox for Android made them automatically strict. This has been changed as of Firefox for Android 24. The use of 'use strict'; is now required.Firefox for Android: Before Firefox for Android 39, a line terminator (\n) was incorrectly allowed after arrow function arguments. This has been fixed to conform to the ES2015 specification and code like () \n => {} will now throw a SyntaxError in this and later versions.
javascript.functions.block_level_functions Edge7/29/2015 Safari9/20/2016419
javascript.functions.default_parameters 📋Firefox8/28/2012 Safari9/20/20161484
javascript.functions.default_parameters.destructured_parameter_with_default_value_assignment Firefox9/22/2015 Safari9/20/2016364
javascript.functions.default_parameters.parameters_without_defaults_after_default_parameters Firefox12/10/2013 Safari9/20/20161015
javascript.functions.rest_parameters 📋Firefox8/28/2012 Safari9/20/20161484
javascript.operators.destructuring.computed_property_names Firefox9/22/2015 Safari9/20/2016364
javascript.operators.generator_function 📋Firefox12/10/2013 Safari9/20/20161015
javascript.operators.yield 📋Firefox12/10/2013 Safari9/20/20161015
Firefox: Starting with Firefox 33, the parsing of the yield expression has been updated to conform with the ES2015 specification.Firefox: Starting with Firefox 29, an IteratorResult object returned for completed generator function.Firefox for Android: Starting with Firefox for Android 33, the parsing of the yield expression has been updated to conform with the ES2015 specification.Firefox for Android: Starting with Firefox for Android 29, an IteratorResult object returned for completed generator function.
javascript.operators.yield_star 📋Firefox2/4/2014 Safari9/20/2016959
Firefox: Starting with Firefox 33, the parsing of the yield expression has been updated to conform with the ES2015 specification.Firefox for Android: Starting with Firefox for Android 33, the parsing of the yield expression has been updated to conform with the ES2015 specification.
javascript.regular_expressions.character_escape.unicode Edge7/29/2015 Safari9/20/2016419
javascript.statements.generator_function 📋Firefox12/10/2013 Safari9/20/20161015
javascript.statements.generator_function.IteratorResult_object Firefox4/29/2014 Safari9/20/2016875
javascript.statements.generator_function.not_constructable_with_new Edge11/12/2015 Safari9/20/2016313
javascript.statements.let 📋Firefox1/26/2016 Safari9/20/2016238
Chrome: Strict mode is required.Chrome Android: Strict mode is required.Edge: In Edge 12 and 13, let within a for loop initializer does not create a separate variable for each loop iteration as defined by ES2015. Instead, it behaves as though the loop were wrapped in a scoping block with the let immediately before the loop.Firefox: Before Firefox 44, let is only available to code blocks in HTML wrapped in a <script type="application/javascript;version=1.7"> block (or higher version) and has different semantics (e.g. no temporal dead zone).Firefox: Before Firefox 46, a TypeError is thrown on redeclaration instead of a SyntaxError.Firefox: Firefox 54 adds support of let in workers.Firefox for Android: Before Firefox for Android 44, let is only available to code blocks in HTML wrapped in a <script type="application/javascript;version=1.7"> block (or higher version) and has different semantics (e.g. no temporal dead zone).Firefox for Android: Before Firefox for Android 46, a TypeError is thrown on redeclaration instead of a SyntaxError.Firefox for Android: Firefox for Android 54 adds support of let in workers.Internet Explorer: In Internet Explorer, let within a for loop initializer does not create a separate variable for each loop iteration as defined by ES2015. Instead, it behaves as though the loop were wrapped in a scoping block with the let immediately before the loop.Samsung Internet: Strict mode is required.WebView Android: Strict mode is required.

2016/8

API First Browser Date Last Browser Date Days Notes
api.AnimationEvent.AnimationEvent 📋Firefox8/6/2013 Edge8/2/20161092
api.AudioContext.close 📋Firefox8/11/2015 Edge8/2/2016357
api.AudioContext.resume 📋Firefox8/11/2015 Edge8/2/2016357
api.AudioContext.suspend 📋Firefox8/11/2015 Edge8/2/2016357
api.BaseAudioContext.state 📋Firefox8/11/2015 Edge8/2/2016357
api.BaseAudioContext.statechange_event 📋Firefox8/11/2015 Edge8/2/2016357
api.CSSKeyframeRule 📋Edge7/29/2015 Firefox8/2/2016370
api.CSSKeyframesRule 📋Edge7/29/2015 Firefox8/2/2016370
api.CanvasRenderingContext2D.clip.path_parameter Safari10/22/2013 Edge8/2/20161015
api.CanvasRenderingContext2D.drawFocusIfNeeded 📋Firefox9/2/2014 Edge8/2/2016700
api.CanvasRenderingContext2D.ellipse 📋Safari9/30/2015 Firefox8/2/2016307
api.CanvasRenderingContext2D.fill.path_parameter Safari10/22/2013 Edge8/2/20161015
api.CanvasRenderingContext2D.isPointInPath.path_parameter Safari10/22/2013 Edge8/2/20161015
api.CanvasRenderingContext2D.stroke.path_parameter Safari10/22/2013 Edge8/2/20161015
api.CloseEvent.CloseEvent 📋Firefox3/13/2012 Edge8/2/20161603
api.Document.scrollingElement 📋Edge7/29/2015 Firefox8/2/2016370
api.ErrorEvent.ErrorEvent 📋Safari7/25/2012 Edge8/2/20161469
api.HTMLFieldSetElement.name 📋Firefox3/22/2011 Edge8/2/20161960
api.HTMLOutputElement 📋Firefox3/22/2011 Edge8/2/20161960
api.HTMLOutputElement.checkValidity 📋Firefox3/22/2011 Edge8/2/20161960
api.HTMLOutputElement.defaultValue 📋Firefox3/22/2011 Edge8/2/20161960
api.HTMLOutputElement.form 📋Firefox3/22/2011 Edge8/2/20161960
api.HTMLOutputElement.htmlFor 📋Firefox3/22/2011 Edge8/2/20161960
Chrome: Before Chrome 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Chrome Android: Before Chrome Android 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Quest Browser: Before Quest Browser 5.0, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Opera: Before Opera 37, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Opera Android: Before Opera Android 37, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Samsung Internet: Before Samsung Internet 5.0, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.WebView Android: Before Chrome 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.
api.HTMLOutputElement.name 📋Firefox3/22/2011 Edge8/2/20161960
api.HTMLOutputElement.setCustomValidity 📋Firefox3/22/2011 Edge8/2/20161960
Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.
api.HTMLOutputElement.type 📋Firefox3/22/2011 Edge8/2/20161960
api.HTMLOutputElement.validationMessage 📋Firefox3/22/2011 Edge8/2/20161960
api.HTMLOutputElement.validity 📋Firefox3/22/2011 Edge8/2/20161960
api.HTMLOutputElement.value 📋Firefox3/22/2011 Edge8/2/20161960
api.HTMLOutputElement.willValidate 📋Firefox3/22/2011 Edge8/2/20161960
api.HTMLScriptElement.crossOrigin 📋Firefox7/17/2012 Edge8/2/20161477
api.ImageData.ImageData 📋Firefox4/29/2014 Edge8/2/2016826
api.ImageData.worker_support Safari10/22/2013 Edge8/2/20161015
api.MessageEvent.MessageEvent 📋Safari7/25/2012 Edge8/2/20161469
api.Node.isSameNode 📋Safari10/26/2007 Firefox8/2/20163203
api.Notification 📋Firefox6/25/2013 Edge8/2/20161134
Chrome: Starting in Chrome 49, notifications do not work in incognito mode.Chrome: Before Chrome 42, service worker additions were not supported.Chrome Android: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Quest Browser: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Opera: Starting in Opera 36, notifications do not work in incognito mode.Opera: Before Opera 29, service worker additions were not supported.Opera Android: Notifications in Opera for Android are only available through service workers. To show notifications on Android, see ServiceWorkerRegistration.showNotification().Opera Android: Starting in Opera for Android 36, notifications do not work in incognito mode.Safari on iOS: The Notification interface is undefined, unless the page is a web app saved to the home screen. The app's manifest must have a non-default display value.Safari on iOS: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Samsung Internet: Notifications in Samsung Internet are only available through service workers. To show notifications on Android, see ServiceWorkerRegistration.showNotification().Samsung Internet: Starting in Samsung Internet 5.0, notifications do not work in incognito mode.
api.Notification.Notification 📋Firefox6/25/2013 Edge8/2/20161134
Chrome Android: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Chrome Android: This constructor always throws a TypeError exception.Quest Browser: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Quest Browser: This constructor always throws a TypeError exception.Opera Android: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Opera Android: This constructor always throws a TypeError exception.Safari on iOS: This constructor throws a ReferenceError exception, unless the page is a web app saved to the home screen. The app's manifest must have a non-default display value.Safari on iOS: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Samsung Internet: A notification can only be sent from a service worker. To show a notification, see ServiceWorkerRegistration.showNotification().Samsung Internet: This constructor always throws a TypeError exception.
api.Notification.click_event 📋Firefox6/25/2013 Edge8/2/20161134
api.Notification.close 📋Firefox6/25/2013 Edge8/2/20161134
api.Notification.close_event 📋Firefox6/25/2013 Edge8/2/20161134
api.Notification.dir 📋Safari10/22/2013 Edge8/2/20161015
api.Notification.error_event 📋Firefox6/25/2013 Edge8/2/20161134
api.Notification.permission_static 📋Firefox6/25/2013 Edge8/2/20161134
Safari on iOS: The parent Notification interface is undefined unless the page is a web app saved to the home screen. The app's manifest must have a non-default display value.
api.Notification.show_event 📋Firefox6/25/2013 Edge8/2/20161134
api.OES_texture_half_float 📋Firefox4/29/2014 Edge8/2/2016826
api.OES_texture_half_float_linear 📋Firefox6/10/2014 Edge8/2/2016784
api.OfflineAudioContext.resume 📋Firefox8/11/2015 Edge8/2/2016357
Firefox: The method exists but always rejects with NotSupportedError. See bug 1265406.Firefox for Android: The method exists but always rejects with NotSupportedError. See bug 1265406.
api.Path2D 📋Firefox7/22/2014 Edge8/2/2016742
api.Path2D.Path2D 📋Firefox7/22/2014 Edge8/2/2016742
Edge: Before Edge 79, the constructor for Path2D objects does not support invocation with a string consisting of SVG path data.
api.Path2D.arc 📋Firefox7/22/2014 Edge8/2/2016742
api.Path2D.arcTo 📋Firefox7/22/2014 Edge8/2/2016742
api.Path2D.bezierCurveTo 📋Firefox7/22/2014 Edge8/2/2016742
api.Path2D.closePath 📋Firefox7/22/2014 Edge8/2/2016742
api.Path2D.ellipse 📋Safari9/30/2015 Firefox8/2/2016307
api.Path2D.lineTo 📋Firefox7/22/2014 Edge8/2/2016742
api.Path2D.moveTo 📋Firefox7/22/2014 Edge8/2/2016742
api.Path2D.quadraticCurveTo 📋Firefox7/22/2014 Edge8/2/2016742
api.Path2D.rect 📋Firefox7/22/2014 Edge8/2/2016742
api.PopStateEvent.PopStateEvent 📋Firefox3/13/2012 Edge8/2/20161603
api.ProgressEvent.ProgressEvent 📋Safari7/25/2012 Edge8/2/20161469
api.TrackEvent.TrackEvent 📋Safari7/25/2012 Edge8/2/20161469
api.TransitionEvent.TransitionEvent 📋Firefox8/6/2013 Edge8/2/20161092
api.Window.stop 📋Firefox11/9/2004 Edge8/2/20164284
api.XMLHttpRequest.responseURL 📋Firefox9/2/2014 Edge8/2/2016700
javascript.builtins.Array.includes 📋Safari9/30/2015 Edge8/2/2016307
javascript.builtins.Function.name 📋Firefox11/9/2004 Edge8/2/20164284
javascript.builtins.Symbol.unscopables 📋Edge7/29/2015 Firefox8/2/2016370
javascript.operators.destructuring 📋Safari10/16/2014 Edge8/2/2016656
Firefox: Firefox provided a non-standard destructuring implementation from Firefox 2 to 40.Firefox for Android: Firefox for Android provided a non-standard destructuring implementation from Firefox for Android 4 to 40.

2016/6

API First Browser Date Last Browser Date Days Notes
api.ANGLE_instanced_arrays 📋Safari10/16/2014 Firefox6/7/2016600
Chrome: Available only on macOS.Opera: Available only on macOS.
api.ANGLE_instanced_arrays.drawArraysInstancedANGLE 📋Safari10/16/2014 Firefox6/7/2016600
api.ANGLE_instanced_arrays.drawElementsInstancedANGLE 📋Safari10/16/2014 Firefox6/7/2016600
api.ANGLE_instanced_arrays.vertexAttribDivisorANGLE 📋Safari10/16/2014 Firefox6/7/2016600
api.EXT_texture_filter_anisotropic 📋Edge7/29/2015 Firefox6/7/2016314

2016/4

API First Browser Date Last Browser Date Days Notes
api.FileReader.worker_support Safari7/25/2012 Firefox4/26/20161371
javascript.functions.arguments.@@iterator 📋Edge7/29/2015 Firefox4/26/2016272

2016/3

API First Browser Date Last Browser Date Days Notes
api.CSSKeyframesRule.appendRule 📋Firefox5/14/2013 Safari3/21/20161042
api.DOMParser.parseFromString.html Firefox4/24/2012 Safari3/21/20161427
api.HTMLImageElement.currentSrc 📋Firefox5/12/2015 Safari3/21/2016314
api.HTMLImageElement.sizes 📋Firefox5/12/2015 Safari3/21/2016314
api.HTMLPictureElement 📋Firefox5/12/2015 Safari3/21/2016314
api.Window.beforeunload_event.generic_string_displayed Edge7/29/2015 Safari3/21/2016236
javascript.functions.get.computed_property_names Firefox12/1/2014 Safari3/21/2016476
javascript.functions.method_definitions.generator_methods_not_constructable Edge11/12/2015 Safari3/21/2016130
javascript.functions.set.computed_property_names Firefox12/1/2014 Safari3/21/2016476
api.HTMLElement.innerText 📋Safari6/23/2003 Firefox3/8/20164642
api.HTMLScriptElement.innerText 📋Safari10/26/2007 Firefox3/8/20163056
javascript.classes 📋Safari9/30/2015 Firefox3/8/2016160
Chrome: Strict mode is required.Chrome Android: Strict mode is required.Opera: Strict mode is required.Opera Android: Strict mode is required.Samsung Internet: Strict mode is required.WebView Android: Strict mode is required.
javascript.classes.constructor 📋Safari9/30/2015 Firefox3/8/2016160
Chrome: Strict mode is required.Chrome Android: Strict mode is required.Opera: Strict mode is required.Opera Android: Strict mode is required.Samsung Internet: Strict mode is required.WebView Android: Strict mode is required.
javascript.classes.extends 📋Safari9/30/2015 Firefox3/8/2016160
Chrome: Strict mode is required.Chrome Android: Strict mode is required.Opera: Strict mode is required.Opera Android: Strict mode is required.Samsung Internet: Strict mode is required.WebView Android: Strict mode is required.
javascript.classes.static 📋Safari9/30/2015 Firefox3/8/2016160
Chrome: Strict mode is required.Chrome Android: Strict mode is required.Opera: Strict mode is required.Opera Android: Strict mode is required.Samsung Internet: Strict mode is required.WebView Android: Strict mode is required.
javascript.operators.class 📋Safari10/22/2013 Firefox3/8/2016868
javascript.operators.super 📋Safari10/22/2013 Firefox3/8/2016868

2016/1

API First Browser Date Last Browser Date Days Notes
api.Document.createAttribute 📋Safari6/23/2003 Firefox1/26/20164600
Firefox: The parameter was not converted to its lowercase variant.Firefox for Android: The parameter was not converted to its lowercase variant.

2015/11

API First Browser Date Last Browser Date Days Notes
api.Document.createTreeWalker.whatToShow_filter_parameters_optional Safari10/26/2007 Edge11/12/20152939
api.HTMLInputElement.selectionDirection 📋Firefox11/8/2011 Edge11/12/20151465
api.HTMLMeterElement 📋Safari7/25/2012 Edge11/12/20151205
api.HTMLMeterElement.high 📋Safari7/25/2012 Edge11/12/20151205
api.HTMLMeterElement.low 📋Safari7/25/2012 Edge11/12/20151205
api.HTMLMeterElement.max 📋Safari7/25/2012 Edge11/12/20151205
api.HTMLMeterElement.min 📋Safari7/25/2012 Edge11/12/20151205
api.HTMLMeterElement.optimum 📋Safari7/25/2012 Edge11/12/20151205
api.HTMLMeterElement.value 📋Safari7/25/2012 Edge11/12/20151205
api.HTMLStyleElement.disabled 📋Safari6/23/2003 Edge11/12/20154525
api.HTMLTemplateElement 📋Firefox6/25/2013 Edge11/12/2015870
api.HTMLTemplateElement.content 📋Firefox6/25/2013 Edge11/12/2015870
api.MouseEvent.movementX 📋Firefox9/22/2015 Edge11/12/201551
api.MouseEvent.movementY 📋Firefox9/22/2015 Edge11/12/201551
api.URL.hash 📋Firefox6/25/2013 Edge11/12/2015870
api.URL.host 📋Firefox6/25/2013 Edge11/12/2015870
api.console.table_static 📋Safari10/22/2013 Edge11/12/2015751
api.HTMLVideoElement.getVideoPlaybackQuality 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.
api.MediaSource 📋Safari10/16/2014 Firefox11/3/2015383
Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.WebView on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.MediaSource.MediaSource 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.MediaSource.activeSourceBuffers 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.MediaSource.addSourceBuffer 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.MediaSource.duration 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.MediaSource.endOfStream 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.MediaSource.isTypeSupported_static 📋Safari10/16/2014 Firefox11/3/2015383
Chrome: codecs string can contain any subset of optional parameters (should be all or none).Chrome: Errors if codecs string contains unexpected characters (should evaluate string up to character).Chrome Android: codecs string can contain any subset of optional parameters (should be all or none).Chrome Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).Edge: codecs string can contain any subset of optional parameters (should be all or none).Edge: Errors if codecs string contains unexpected characters (should evaluate string up to character).Firefox: Before Firefox 101, isTypeSupported() ignored codecs parameter options for av01 codecs (treating them as av1).Firefox for Android: Before Firefox 101, isTypeSupported() ignored codecs parameter options for av01 codecs (treating them as av1).Internet Explorer: Only works on Windows 8+.Quest Browser: codecs string can contain any subset of optional parameters (should be all or none).Quest Browser: Errors if codecs string contains unexpected characters (should evaluate string up to character).Opera: codecs string can contain any subset of optional parameters (should be all or none).Opera: Errors if codecs string contains unexpected characters (should evaluate string up to character).Opera Android: codecs string can contain any subset of optional parameters (should be all or none).Opera Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.Samsung Internet: codecs string can contain any subset of optional parameters (should be all or none).Samsung Internet: Errors if codecs string contains unexpected characters (should evaluate string up to character).WebView Android: codecs string can contain any subset of optional parameters (should be all or none).WebView Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).
api.MediaSource.readyState 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.MediaSource.removeSourceBuffer 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.MediaSource.sourceBuffers 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SourceBuffer 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SourceBuffer.abort 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SourceBuffer.appendBuffer 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SourceBuffer.appendWindowEnd 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SourceBuffer.appendWindowStart 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SourceBuffer.buffered 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SourceBuffer.mode 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SourceBuffer.remove 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SourceBuffer.timestampOffset 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SourceBuffer.updating 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SourceBufferList 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.WebView on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.SourceBufferList.length 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.WebView on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.VideoPlaybackQuality 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.
api.VideoPlaybackQuality.creationTime 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.
api.VideoPlaybackQuality.droppedVideoFrames 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.
api.VideoPlaybackQuality.totalVideoFrames 📋Safari10/16/2014 Firefox11/3/2015383
Internet Explorer: Only works on Windows 8+.

2015/9

API First Browser Date Last Browser Date Days Notes
api.AnimationEvent 📋Firefox6/21/2011 Safari9/30/20151562
api.AnimationEvent.animationName 📋Firefox6/21/2011 Safari9/30/20151562
api.AnimationEvent.elapsedTime 📋Firefox6/21/2011 Safari9/30/20151562
api.CSS 📋Firefox6/25/2013 Safari9/30/2015827
api.CSS.supports_static 📋Firefox6/25/2013 Safari9/30/2015827
api.CSSSupportsRule 📋Firefox6/25/2013 Safari9/30/2015827
api.HTMLAreaElement.rel 📋Firefox6/10/2014 Safari9/30/2015477
api.HTMLSelectElement.add.index_before_parameter Firefox11/8/2011 Safari9/30/20151422
javascript.builtins.Array.copyWithin 📋Firefox9/2/2014 Safari9/30/2015393
javascript.builtins.Array.from 📋Firefox9/2/2014 Safari9/30/2015393
javascript.builtins.Array.of 📋Firefox10/29/2013 Safari9/30/2015701
javascript.builtins.Map.Map.iterable_allowed Firefox6/5/2012 Safari9/30/20151212
javascript.builtins.Map.Map.null_allowed Firefox3/31/2015 Safari9/30/2015183
javascript.builtins.Map.key_equality_for_zeros Firefox4/29/2014 Safari9/30/2015519
javascript.builtins.Math.sign 📋Firefox10/29/2013 Safari9/30/2015701
javascript.builtins.Number.EPSILON 📋Firefox10/29/2013 Safari9/30/2015701
javascript.builtins.Number.MAX_SAFE_INTEGER 📋Firefox7/22/2014 Safari9/30/2015435
javascript.builtins.Number.MIN_SAFE_INTEGER 📋Firefox7/22/2014 Safari9/30/2015435
javascript.builtins.Number.isFinite 📋Firefox10/9/2012 Safari9/30/20151086
javascript.builtins.Number.isInteger 📋Firefox10/9/2012 Safari9/30/20151086
javascript.builtins.Number.isNaN 📋Firefox8/28/2012 Safari9/30/20151128
javascript.builtins.Number.isSafeInteger 📋Firefox9/2/2014 Safari9/30/2015393
javascript.builtins.Number.parseFloat 📋Firefox10/29/2013 Safari9/30/2015701
javascript.builtins.Number.parseInt 📋Firefox10/29/2013 Safari9/30/2015701
javascript.builtins.Object.assign 📋Firefox12/1/2014 Safari9/30/2015303
javascript.builtins.Object.getOwnPropertySymbols 📋Firefox2/24/2015 Safari9/30/2015218
javascript.builtins.Object.is 📋Firefox6/25/2013 Safari9/30/2015827
javascript.builtins.Object.preventExtensions.ES2015_behavior Firefox1/13/2015 Safari9/30/2015260
javascript.builtins.Object.setPrototypeOf 📋Firefox7/22/2014 Safari9/30/2015435
javascript.builtins.Set.@@iterator 📋Firefox2/24/2015 Safari9/30/2015218
Firefox: A placeholder property named @@iterator is used.Firefox: A placeholder property named iterator is used.Firefox for Android: A placeholder property named @@iterator is used.Firefox for Android: A placeholder property named iterator is used.
javascript.builtins.Set.Set.iterable_allowed Firefox6/5/2012 Safari9/30/20151212
javascript.builtins.Set.Set.null_allowed Firefox3/31/2015 Safari9/30/2015183
javascript.builtins.Set.key_equality_for_zeros Firefox4/29/2014 Safari9/30/2015519
javascript.builtins.String.@@iterator 📋Firefox2/24/2015 Safari9/30/2015218
Firefox: A placeholder property named @@iterator is used.Firefox: A placeholder property named iterator is used.Firefox for Android: A placeholder property named @@iterator is used.Firefox for Android: A placeholder property named iterator is used.
javascript.builtins.String.codePointAt 📋Firefox4/29/2014 Safari9/30/2015519
javascript.builtins.String.endsWith 📋Firefox11/20/2012 Safari9/30/20151044
javascript.builtins.String.fromCodePoint 📋Firefox4/29/2014 Safari9/30/2015519
javascript.builtins.String.includes 📋Edge7/29/2015 Safari9/30/201563
javascript.builtins.String.raw 📋Firefox12/1/2014 Safari9/30/2015303
javascript.builtins.String.repeat 📋Firefox9/17/2013 Safari9/30/2015743
javascript.builtins.String.startsWith 📋Firefox11/20/2012 Safari9/30/20151044
javascript.builtins.Symbol 📋Firefox2/24/2015 Safari9/30/2015218
Edge: Edge 12 included Symbol properties in JSON.stringify() output.
javascript.builtins.Symbol.Symbol 📋Firefox2/24/2015 Safari9/30/2015218
javascript.builtins.Symbol.for 📋Firefox2/24/2015 Safari9/30/2015218
javascript.builtins.Symbol.keyFor 📋Firefox2/24/2015 Safari9/30/2015218
javascript.builtins.Symbol.toString 📋Firefox2/24/2015 Safari9/30/2015218
javascript.builtins.Symbol.valueOf 📋Firefox2/24/2015 Safari9/30/2015218
javascript.builtins.WeakMap.WeakMap.iterable_allowed Firefox2/24/2015 Safari9/30/2015218
javascript.builtins.WeakSet 📋Firefox12/1/2014 Safari9/30/2015303
javascript.builtins.WeakSet.WeakSet 📋Firefox12/1/2014 Safari9/30/2015303
javascript.builtins.WeakSet.WeakSet.iterable_allowed Firefox12/1/2014 Safari9/30/2015303
javascript.builtins.WeakSet.WeakSet.null_allowed Firefox3/31/2015 Safari9/30/2015183
javascript.builtins.WeakSet.add 📋Firefox12/1/2014 Safari9/30/2015303
javascript.builtins.WeakSet.delete 📋Firefox12/1/2014 Safari9/30/2015303
javascript.builtins.WeakSet.has 📋Firefox12/1/2014 Safari9/30/2015303
javascript.functions.method_definitions 📋Firefox12/1/2014 Safari9/30/2015303
javascript.grammar.binary_numeric_literals 📋Firefox10/29/2013 Safari9/30/2015701
javascript.grammar.octal_numeric_literals 📋Firefox10/29/2013 Safari9/30/2015701
javascript.grammar.shorthand_object_literals Firefox10/14/2014 Safari9/30/2015351
javascript.grammar.template_literals 📋Firefox12/1/2014 Safari9/30/2015303
javascript.grammar.unicode_point_escapes 📋Edge7/29/2015 Safari9/30/201563
javascript.operators.object_initializer.shorthand_method_names Firefox12/1/2014 Safari9/30/2015303
javascript.operators.object_initializer.shorthand_property_names Firefox10/14/2014 Safari9/30/2015351
api.MessageChannel 📋Safari6/7/2010 Firefox9/22/20151933
Node.js: Available as a part of the worker_threads module.
api.MessageChannel.MessageChannel 📋Safari6/7/2010 Firefox9/22/20151933
api.MessageChannel.port1 📋Safari6/7/2010 Firefox9/22/20151933
api.MessageChannel.port2 📋Safari6/7/2010 Firefox9/22/20151933
api.MessagePort 📋Safari6/7/2010 Firefox9/22/20151933
Node.js: Available as a part of the worker_threads module.Node.js: Available as a part of the worker_threads module.Node.js: Inherits from Node EventEmitter instead of DOM EventTarget.
api.MessagePort.close 📋Safari6/7/2010 Firefox9/22/20151933
api.MessagePort.message_event 📋Safari6/7/2010 Firefox9/22/20151933
Node.js: Supports the event, but only via Node EventEmitter.
api.MessagePort.postMessage 📋Safari6/7/2010 Firefox9/22/20151933
Deno: The message parameter does not support cloning Blob values.Deno: The message parameter does not support cloning Blob values.Deno: The transfer parameter does not accept ArrayBuffer items. Passing an ArrayBuffer results in an error being thrown.
api.MessagePort.start 📋Safari6/7/2010 Firefox9/22/20151933
api.MessagePort.worker_support Safari6/7/2010 Firefox9/22/20151933
javascript.builtins.RegExp.source.prototype_accessor Safari4/15/2005 Firefox9/22/20153812

2015/8

API First Browser Date Last Browser Date Days Notes
javascript.builtins.String.unicode_code_point_escapes Safari6/23/2003 Firefox8/11/20154432

2015/7

API First Browser Date Last Browser Date Days Notes
api.AnalyserNode 📋Safari7/25/2012 Edge7/29/20151099
api.AnalyserNode.fftSize 📋Safari7/25/2012 Edge7/29/20151099
api.AnalyserNode.frequencyBinCount 📋Safari7/25/2012 Edge7/29/20151099
api.AnalyserNode.getByteFrequencyData 📋Safari7/25/2012 Edge7/29/20151099
api.AnalyserNode.getByteTimeDomainData 📋Safari7/25/2012 Edge7/29/20151099
api.AnalyserNode.getFloatFrequencyData 📋Safari7/25/2012 Edge7/29/20151099
api.AnalyserNode.maxDecibels 📋Safari7/25/2012 Edge7/29/20151099
api.AnalyserNode.minDecibels 📋Safari7/25/2012 Edge7/29/20151099
api.AnalyserNode.smoothingTimeConstant 📋Safari7/25/2012 Edge7/29/20151099
api.Attr 📋Safari6/23/2003 Edge7/29/20154419
api.Attr.localName 📋Safari6/23/2003 Edge7/29/20154419
api.Attr.name 📋Safari6/23/2003 Edge7/29/20154419
api.Attr.namespaceURI 📋Safari6/23/2003 Edge7/29/20154419
api.Attr.ownerElement 📋Safari6/23/2003 Edge7/29/20154419
api.Attr.prefix 📋Safari6/23/2003 Edge7/29/20154419
api.Attr.specified 📋Safari6/23/2003 Edge7/29/20154419
api.Attr.value 📋Safari6/23/2003 Edge7/29/20154419
api.AudioBuffer 📋Safari7/25/2012 Edge7/29/20151099
api.AudioBuffer.duration 📋Safari7/25/2012 Edge7/29/20151099
api.AudioBuffer.getChannelData 📋Safari7/25/2012 Edge7/29/20151099
api.AudioBuffer.length 📋Safari7/25/2012 Edge7/29/20151099
api.AudioBuffer.numberOfChannels 📋Safari7/25/2012 Edge7/29/20151099
api.AudioBuffer.sampleRate 📋Safari7/25/2012 Edge7/29/20151099
api.AudioBufferSourceNode 📋Safari7/25/2012 Edge7/29/20151099
api.AudioBufferSourceNode.buffer 📋Safari7/25/2012 Edge7/29/20151099
Firefox: Firefox currently handles the value null incorrectly. Instead of producing a node that generates a single channel of silence, the node becomes unusable and will be ignored if you attempt to connect it to anything.Firefox for Android: Firefox for Android currently handles the value null incorrectly. Instead of producing a node that generates a single channel of silence, the node becomes unusable and will be ignored if you attempt to connect it to anything.
api.AudioBufferSourceNode.loop 📋Safari7/25/2012 Edge7/29/20151099
api.AudioBufferSourceNode.loopEnd 📋Safari10/22/2013 Edge7/29/2015645
api.AudioBufferSourceNode.loopStart 📋Safari10/22/2013 Edge7/29/2015645
api.AudioBufferSourceNode.playbackRate 📋Safari7/25/2012 Edge7/29/20151099
api.AudioBufferSourceNode.start 📋Safari10/22/2013 Edge7/29/2015645
api.AudioContext.createMediaElementSource 📋Safari7/25/2012 Edge7/29/20151099
Firefox: If a sample rate is specified for the audio context, it must match the sample rate of the stream, otherwise this method will fail.Firefox for Android: If a sample rate is specified for the audio context, it must match the sample rate of the stream, otherwise this method will fail.
api.AudioDestinationNode 📋Safari7/25/2012 Edge7/29/20151099
api.AudioListener 📋Safari7/25/2012 Edge7/29/20151099
api.AudioListener.setOrientation 📋Safari7/25/2012 Edge7/29/20151099
api.AudioListener.setPosition 📋Safari7/25/2012 Edge7/29/20151099
api.AudioNode 📋Safari7/25/2012 Edge7/29/20151099
api.AudioNode.channelCount 📋Safari10/22/2013 Edge7/29/2015645
api.AudioNode.channelCountMode 📋Safari10/22/2013 Edge7/29/2015645
api.AudioNode.channelInterpretation 📋Safari10/22/2013 Edge7/29/2015645
api.AudioNode.connect 📋Safari7/25/2012 Edge7/29/20151099
api.AudioNode.context 📋Safari7/25/2012 Edge7/29/20151099
api.AudioNode.disconnect 📋Safari7/25/2012 Edge7/29/20151099
api.AudioNode.numberOfInputs 📋Safari7/25/2012 Edge7/29/20151099
api.AudioNode.numberOfOutputs 📋Safari7/25/2012 Edge7/29/20151099
api.AudioParam 📋Safari7/25/2012 Edge7/29/20151099
api.AudioParam.cancelScheduledValues 📋Safari7/25/2012 Edge7/29/20151099
api.AudioParam.defaultValue 📋Safari7/25/2012 Edge7/29/20151099
api.AudioParam.exponentialRampToValueAtTime 📋Safari7/25/2012 Edge7/29/20151099
Chrome Android: Behaves like setValueAtTime(): Sets the target volume at the specified time, but doesn't ramp to it.Firefox: Sometimes jumps to value immediately. See bug 2011524.Firefox for Android: Sometimes jumps to value immediately. See bug 2011524.Quest Browser: Behaves like setValueAtTime(): Sets the target volume at the specified time, but doesn't ramp to it.WebView Android: Behaves like setValueAtTime(): Sets the target volume at the specified time, but doesn't ramp to it.
api.AudioParam.linearRampToValueAtTime 📋Safari7/25/2012 Edge7/29/20151099
Chrome Android: Behaves like setValueAtTime(): Sets the target volume at the specified time, but doesn't ramp to it.Firefox: Sometimes jumps to value immediately. See bug 2011524.Firefox for Android: Sometimes jumps to value immediately. See bug 2011524.Quest Browser: Behaves like setValueAtTime(): Sets the target volume at the specified time, but doesn't ramp to it.WebView Android: Behaves like setValueAtTime(): Sets the target volume at the specified time, but doesn't ramp to it.
api.AudioParam.setTargetAtTime 📋Safari7/25/2012 Edge7/29/20151099
api.AudioParam.setValueAtTime 📋Safari7/25/2012 Edge7/29/20151099
api.AudioParam.setValueCurveAtTime 📋Safari7/25/2012 Edge7/29/20151099
api.AudioParam.value 📋Safari7/25/2012 Edge7/29/20151099
Chrome: Before version 66, the gain value of a GainNode would perform a smooth interpolation to prevent dezippering (instead of changing instantly).Chrome Android: Before version 66, the gain value of a GainNode would perform a smooth interpolation to prevent dezippering (instead of changing instantly).Firefox: Before Firefox 134, setting value was ignored when done at the same time as scheduled automation events.Firefox: Before Firefox 69, value did not take into account scheduled or gradiated changes to the parameter's value; instead, only explicitly set values were returned.Firefox for Android: Firefox for Android does not currently take into account scheduled or gradiated changes to the parameter's value; only the initial value or the most recent explicitly set value is returned.Quest Browser: Before version 5.0, the gain value of a GainNode would perform a smooth interpolation to prevent dezippering (instead of changing instantly).Opera: Before version 53, the gain value of a GainNode would perform a smooth interpolation to prevent dezippering (instead of changing instantly).Opera Android: Before version 47, the gain value of a GainNode would perform a smooth interpolation to prevent dezippering (instead of changing instantly).Samsung Internet: Before version 9.0, the gain value of a GainNode would perform a smooth interpolation to prevent dezippering (instead of changing instantly).WebView Android: Before version 66, the gain value of a GainNode would perform a smooth interpolation to prevent dezippering (instead of changing instantly).
api.AudioProcessingEvent Safari7/25/2012 Edge7/29/20151099
api.AudioProcessingEvent.inputBuffer 📋Safari7/25/2012 Edge7/29/20151099
api.AudioProcessingEvent.outputBuffer 📋Safari7/25/2012 Edge7/29/20151099
api.AudioProcessingEvent.playbackTime 📋Safari7/25/2012 Edge7/29/20151099
api.AudioScheduledSourceNode.ended_event 📋Safari10/22/2013 Edge7/29/2015645
api.AudioScheduledSourceNode.start 📋Safari10/22/2013 Edge7/29/2015645
api.AudioScheduledSourceNode.stop 📋Safari10/22/2013 Edge7/29/2015645
api.BarProp 📋Firefox11/9/2004 Edge7/29/20153914
api.BarProp.visible 📋Firefox11/9/2004 Edge7/29/20153914
api.BaseAudioContext.createAnalyser 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.createBiquadFilter 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.createBuffer 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.createBufferSource 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.createChannelMerger 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.createChannelSplitter 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.createConvolver 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.createDelay 📋Safari10/22/2013 Edge7/29/2015645
api.BaseAudioContext.createDynamicsCompressor 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.createGain 📋Safari10/22/2013 Edge7/29/2015645
api.BaseAudioContext.createOscillator 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.createPanner 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.createPeriodicWave 📋Firefox10/29/2013 Edge7/29/2015638
api.BaseAudioContext.createScriptProcessor 📋Safari10/22/2013 Edge7/29/2015645
api.BaseAudioContext.createWaveShaper 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.currentTime 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.decodeAudioData 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.destination 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.listener 📋Safari7/25/2012 Edge7/29/20151099
api.BaseAudioContext.sampleRate 📋Safari7/25/2012 Edge7/29/20151099
api.BeforeUnloadEvent 📋Firefox11/29/2005 Edge7/29/20153529
api.BeforeUnloadEvent.returnValue 📋Firefox11/29/2005 Edge7/29/20153529
Chrome: Before Chrome 119, an empty string incorrectly activated the confirmation dialog.Chrome Android: Before Chrome Android 119, an empty string incorrectly activated the confirmation dialog.Quest Browser: Before Quest Browser false, an empty string incorrectly activated the confirmation dialog.Opera: Before Opera 105, an empty string incorrectly activated the confirmation dialog.Opera Android: Before Opera Android 79, an empty string incorrectly activated the confirmation dialog.WebView Android: Before WebView Android 119, an empty string incorrectly activated the confirmation dialog.
api.BiquadFilterNode 📋Safari7/25/2012 Edge7/29/20151099
api.BiquadFilterNode.Q 📋Safari7/25/2012 Edge7/29/20151099
api.BiquadFilterNode.detune 📋Safari10/22/2013 Edge7/29/2015645
api.BiquadFilterNode.frequency 📋Safari7/25/2012 Edge7/29/20151099
api.BiquadFilterNode.gain 📋Safari7/25/2012 Edge7/29/20151099
api.BiquadFilterNode.getFrequencyResponse 📋Safari7/25/2012 Edge7/29/20151099
api.BiquadFilterNode.type 📋Safari7/25/2012 Edge7/29/20151099
api.Blob 📋Firefox3/22/2011 Edge7/29/20151590
Node.js: Available as a part of the buffer module.Node.js: Available as a part of the buffer module.
api.Blob.Blob 📋Firefox6/5/2012 Edge7/29/20151149
Firefox: Before Firefox 16, the second parameter, when set to null or undefined, leads to an error instead of being handled as an empty dictionary.Firefox for Android: Before Firefox for Android 16, the second parameter, when set to null or undefined, leads to an error instead of being handled as an empty dictionary.Internet Explorer: IE10 throws InvalidStateError with a TypedArray argument. Consider using MSBuilder as an alternative.Node.js: Before v16.7.0, the endings option was not supported.
api.Blob.size 📋Firefox3/22/2011 Edge7/29/20151590
api.Blob.slice 📋Firefox6/5/2012 Edge7/29/20151149
Firefox: Before Firefox 12, there was a bug that affected the behavior of Blob.slice(); it did not work for start and end positions outside the range of signed 64-bit values; it has now been fixed to support unsigned 64-bit values.Firefox for Android: Before Firefox for Android 14, there was a bug that affected the behavior of Blob.slice(); it did not work for start and end positions outside the range of signed 64-bit values; it has now been fixed to support unsigned 64-bit values.
api.Blob.type 📋Firefox3/22/2011 Edge7/29/20151590
api.CDATASection 📋Firefox11/9/2004 Edge7/29/20153914
api.CSSFontFaceRule 📋Safari3/18/2008 Edge7/29/20152689
api.CSSFontFaceRule.style 📋Safari3/18/2008 Edge7/29/20152689
api.CSSGroupingRule.cssRules 📋Safari10/26/2007 Edge7/29/20152833
api.CSSGroupingRule.deleteRule 📋Safari10/26/2007 Edge7/29/20152833
api.CSSGroupingRule.insertRule 📋Safari10/26/2007 Edge7/29/20152833
api.CSSImportRule 📋Safari6/23/2003 Edge7/29/20154419
api.CSSImportRule.href 📋Safari6/23/2003 Edge7/29/20154419
api.CSSImportRule.media 📋Safari6/23/2003 Edge7/29/20154419
api.CSSImportRule.styleSheet 📋Safari6/23/2003 Edge7/29/20154419
api.CSSKeyframeRule.keyText 📋Safari6/8/2009 Edge7/29/20152242
api.CSSKeyframeRule.style 📋Safari6/8/2009 Edge7/29/20152242
api.CSSKeyframesRule.cssRules 📋Safari6/8/2009 Edge7/29/20152242
api.CSSKeyframesRule.deleteRule 📋Safari6/8/2009 Edge7/29/20152242
api.CSSKeyframesRule.findRule 📋Safari6/8/2009 Edge7/29/20152242
api.CSSKeyframesRule.name 📋Safari6/8/2009 Edge7/29/20152242
api.CSSMediaRule 📋Firefox11/9/2004 Edge7/29/20153914
Firefox: Before Firefox 20, conditionText could not be set.Firefox for Android: Before Firefox for Android 20, conditionText could not be set.
api.CSSMediaRule.media 📋Firefox11/9/2004 Edge7/29/20153914
api.CSSPageRule 📋Safari10/26/2007 Edge7/29/20152833
api.CSSPageRule.style 📋Safari10/26/2007 Edge7/29/20152833
api.CSSRule 📋Safari6/23/2003 Edge7/29/20154419
api.CSSRule.cssText 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: The property normalizes rules and does not return the original verbatim rule text. For example, border-width: 1px; border-style:solid; border-color:white; returns border: 1px solid white;.
api.CSSRule.parentRule 📋Safari6/23/2003 Edge7/29/20154419
api.CSSRule.parentStyleSheet 📋Safari6/23/2003 Edge7/29/20154419
api.CSSRule.type 📋Safari6/23/2003 Edge7/29/20154419
api.CSSRuleList 📋Safari6/23/2003 Edge7/29/20154419
api.CSSRuleList.item 📋Safari6/23/2003 Edge7/29/20154419
api.CSSRuleList.length 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleDeclaration 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleDeclaration.cssText 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleDeclaration.getPropertyPriority 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleDeclaration.getPropertyValue 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleDeclaration.item 📋Firefox11/9/2004 Edge7/29/20153914
api.CSSStyleDeclaration.length 📋Firefox11/9/2004 Edge7/29/20153914
api.CSSStyleDeclaration.parentRule 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleDeclaration.removeProperty 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleDeclaration.setProperty 📋Firefox11/9/2004 Edge7/29/20153914
api.CSSStyleRule 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleRule.selectorText 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleRule.style 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleSheet 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleSheet.cssRules 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleSheet.deleteRule 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleSheet.insertRule 📋Safari6/23/2003 Edge7/29/20154419
api.CSSStyleSheet.ownerRule 📋Safari6/23/2003 Edge7/29/20154419
api.CanvasGradient 📋Safari4/29/2005 Edge7/29/20153743
Firefox: Before Firefox 5.0, specifying non-finite values when adding color stops through a call to addColorStop() incorrectly throws SYNTAX_ERR instead of INDEX_SIZE_ERR.
api.CanvasGradient.addColorStop 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasPattern 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.arc 📋Firefox11/29/2005 Edge7/29/20153529
api.CanvasRenderingContext2D.arcTo 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.beginPath 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.bezierCurveTo 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.canvas 📋Firefox11/29/2005 Edge7/29/20153529
api.CanvasRenderingContext2D.clearRect 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.clip 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.closePath 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.createImageData 📋Safari6/8/2009 Edge7/29/20152242
api.CanvasRenderingContext2D.createLinearGradient 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.createPattern 📋Safari4/29/2005 Edge7/29/20153743
Firefox: The repetition values repeat-x and repeat-y are not supported with fill(), only with fillRect(), see bug 468358.Firefox for Android: The repetition values repeat-x and repeat-y are not supported with fill(), only with fillRect(), see bug 468358.
api.CanvasRenderingContext2D.createRadialGradient 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.drawImage 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.fill 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.fillRect 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.fillStyle 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.fillText 📋Safari6/8/2009 Edge7/29/20152242
api.CanvasRenderingContext2D.getImageData 📋Firefox10/24/2006 Edge7/29/20153200
Firefox: Since Firefox 5, getImageData now correctly accepts rectangles that extend beyond the bounds of the canvas; pixels outside the canvas are returned as transparent black and now also returns at least one pixel's worth of image data if a rectangle smaller than one pixel is specified.Firefox for Android: Since Firefox for Android 5, getImageData now correctly accepts rectangles that extend beyond the bounds of the canvas; pixels outside the canvas are returned as transparent black and now also returns at least one pixel's worth of image data if a rectangle smaller than one pixel is specified.
api.CanvasRenderingContext2D.getLineDash 📋Safari10/22/2013 Edge7/29/2015645
api.CanvasRenderingContext2D.globalAlpha 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.globalCompositeOperation 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.isPointInPath 📋Firefox10/24/2006 Edge7/29/20153200
api.CanvasRenderingContext2D.lineCap 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.lineDashOffset 📋Safari10/22/2013 Edge7/29/2015645
api.CanvasRenderingContext2D.lineJoin 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.lineTo 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.lineWidth 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.measureText 📋Safari6/8/2009 Edge7/29/20152242
api.CanvasRenderingContext2D.miterLimit 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.moveTo 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.putImageData 📋Firefox10/24/2006 Edge7/29/20153200
api.CanvasRenderingContext2D.quadraticCurveTo 📋Firefox11/29/2005 Edge7/29/20153529
api.CanvasRenderingContext2D.rect 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.restore 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.rotate 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.save 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.scale 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.setLineDash 📋Safari10/22/2013 Edge7/29/2015645
api.CanvasRenderingContext2D.setTransform 📋Firefox6/17/2008 Edge7/29/20152598
api.CanvasRenderingContext2D.shadowBlur 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.shadowColor 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.shadowOffsetX 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.shadowOffsetY 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.stroke 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.strokeRect 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.strokeStyle 📋Safari4/29/2005 Edge7/29/20153743
api.CanvasRenderingContext2D.strokeText 📋Safari6/8/2009 Edge7/29/20152242
api.CanvasRenderingContext2D.textAlign 📋Safari6/8/2009 Edge7/29/20152242
api.CanvasRenderingContext2D.textBaseline 📋Safari6/8/2009 Edge7/29/20152242
api.CanvasRenderingContext2D.transform 📋Safari3/18/2008 Edge7/29/20152689
api.CanvasRenderingContext2D.translate 📋Safari4/29/2005 Edge7/29/20153743
api.ChannelMergerNode 📋Safari7/25/2012 Edge7/29/20151099
api.ChannelSplitterNode 📋Safari7/25/2012 Edge7/29/20151099
Chrome: Starting in Chrome 56, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec.Chrome Android: Starting in Chrome Android 56, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec.Quest Browser: Starting in Quest Browser 5.0, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec.Opera: Starting in Opera 43, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec.Opera Android: Starting in Opera Android 43, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec.Samsung Internet: Starting in Samsung Internet 6.0, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec.WebView Android: Starting in version 56, channelCountMode is set to explicit and channelCount is fixed to the number of outputs, as per the latest spec.
api.CharacterData 📋Safari6/23/2003 Edge7/29/20154419
api.CharacterData.appendData 📋Safari6/23/2003 Edge7/29/20154419
api.CharacterData.data 📋Safari6/23/2003 Edge7/29/20154419
api.CharacterData.deleteData 📋Safari6/23/2003 Edge7/29/20154419
api.CharacterData.insertData 📋Safari6/23/2003 Edge7/29/20154419
api.CharacterData.length 📋Safari6/23/2003 Edge7/29/20154419
api.CharacterData.remove 📋Firefox8/6/2013 Edge7/29/2015722
api.CharacterData.replaceData 📋Safari6/23/2003 Edge7/29/20154419
api.CharacterData.substringData 📋Safari6/23/2003 Edge7/29/20154419
api.CloseEvent 📋Firefox11/8/2011 Edge7/29/20151359
Firefox: Before Firefox 12, the close code CLOSE_NORMAL was used when the channel was closed due to an unexpected error or unspecified error condition.Firefox: Before Firefox 8, the WebSocket close event was sent to the listener as a simple event.
api.CloseEvent.code 📋Firefox11/8/2011 Edge7/29/20151359
api.CloseEvent.reason 📋Firefox11/8/2011 Edge7/29/20151359
api.CloseEvent.wasClean 📋Firefox11/8/2011 Edge7/29/20151359
api.Comment 📋Firefox11/9/2004 Edge7/29/20153914
api.CompositionEvent 📋Safari6/7/2010 Edge7/29/20151878
api.CompositionEvent.data 📋Safari6/7/2010 Edge7/29/20151878
api.CompositionEvent.initCompositionEvent 📋Safari6/7/2010 Edge7/29/20151878
api.ConvolverNode 📋Safari7/25/2012 Edge7/29/20151099
api.ConvolverNode.buffer 📋Safari7/25/2012 Edge7/29/20151099
api.ConvolverNode.normalize 📋Safari7/25/2012 Edge7/29/20151099
api.Crypto 📋Safari6/7/2010 Edge7/29/20151878
Deno: Crypto is not a concrete interface, but its methods are available on Window.crypto.Node.js: Available as a part of the crypto module.
api.Crypto.getRandomValues 📋Safari6/7/2010 Edge7/29/20151878
Node.js: Since v17.4.0, a similar method is available via the crypto module.
api.CryptoKey 📋Safari10/22/2013 Edge7/29/2015645
Node.js: Available as a part of the crypto module.
api.CryptoKey.algorithm 📋Safari10/22/2013 Edge7/29/2015645
api.CryptoKey.extractable 📋Safari10/22/2013 Edge7/29/2015645
Deno: The only supported value for this property is true.
api.CryptoKey.type 📋Safari10/22/2013 Edge7/29/2015645
api.CryptoKey.usages 📋Safari10/22/2013 Edge7/29/2015645
api.CustomEvent 📋Safari6/7/2010 Edge7/29/20151878
api.CustomEvent.CustomEvent 📋Firefox3/13/2012 Edge7/29/20151233
api.CustomEvent.detail 📋Safari6/7/2010 Edge7/29/20151878
api.CustomEvent.initCustomEvent 📋Safari6/7/2010 Edge7/29/20151878
api.DOMException 📋Safari6/23/2003 Edge7/29/20154419
api.DOMException.code 📋Safari6/23/2003 Edge7/29/20154419
api.DOMException.message 📋Safari6/23/2003 Edge7/29/20154419
api.DOMException.name 📋Safari6/23/2003 Edge7/29/20154419
api.DOMImplementation 📋Safari6/23/2003 Edge7/29/20154419
api.DOMImplementation.createDocument 📋Safari6/23/2003 Edge7/29/20154419
api.DOMImplementation.createDocumentType 📋Safari6/23/2003 Edge7/29/20154419
api.DOMImplementation.createHTMLDocument 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: The title parameter is required, but can be empty string.
api.DOMImplementation.hasFeature 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Since Firefox 19, hasFeature() mostly returns true.
api.DOMParser 📋Firefox11/9/2004 Edge7/29/20153914
api.DOMParser.DOMParser 📋Firefox11/9/2004 Edge7/29/20153914
api.DOMParser.parseFromString 📋Firefox11/9/2004 Edge7/29/20153914
api.DOMParser.parseFromString.svg Safari10/26/2007 Edge7/29/20152833
api.DOMParser.parseFromString.xml Firefox11/9/2004 Edge7/29/20153914
api.DOMRect.height 📋Firefox6/17/2008 Edge7/29/20152598
api.DOMRect.width 📋Firefox6/17/2008 Edge7/29/20152598
api.DOMRectList.item 📋Firefox6/17/2008 Edge7/29/20152598
api.DOMRectList.length 📋Firefox6/17/2008 Edge7/29/20152598
api.DOMRectReadOnly.bottom 📋Firefox6/17/2008 Edge7/29/20152598
api.DOMRectReadOnly.height 📋Firefox6/17/2008 Edge7/29/20152598
api.DOMRectReadOnly.left 📋Firefox6/17/2008 Edge7/29/20152598
api.DOMRectReadOnly.right 📋Firefox6/17/2008 Edge7/29/20152598
api.DOMRectReadOnly.top 📋Firefox6/17/2008 Edge7/29/20152598
api.DOMRectReadOnly.width 📋Firefox6/17/2008 Edge7/29/20152598
api.DOMStringList 📋Firefox11/9/2004 Edge7/29/20153914
api.DOMStringList.contains 📋Firefox11/29/2005 Edge7/29/20153529
api.DOMStringList.item 📋Firefox11/9/2004 Edge7/29/20153914
api.DOMStringList.length 📋Firefox11/9/2004 Edge7/29/20153914
api.DOMStringMap 📋Safari7/20/2011 Edge7/29/20151470
api.DOMTokenList 📋Firefox1/21/2010 Edge7/29/20152015
api.DOMTokenList.add 📋Firefox1/21/2010 Edge7/29/20152015
api.DOMTokenList.add.multiple_parameters Safari10/22/2013 Edge7/29/2015645
api.DOMTokenList.contains 📋Firefox1/21/2010 Edge7/29/20152015
api.DOMTokenList.item 📋Firefox1/21/2010 Edge7/29/20152015
api.DOMTokenList.length 📋Firefox1/21/2010 Edge7/29/20152015
api.DOMTokenList.remove 📋Firefox1/21/2010 Edge7/29/20152015
api.DOMTokenList.remove.multiple_parameters Safari10/22/2013 Edge7/29/2015645
api.DOMTokenList.toString 📋Firefox1/21/2010 Edge7/29/20152015
api.DOMTokenList.toggle 📋Firefox1/21/2010 Edge7/29/20152015
api.DOMTokenList.toggle.force_parameter Firefox9/17/2013 Edge7/29/2015680
api.DataTransfer 📋Safari6/8/2009 Edge7/29/20152242
Firefox: As of Firefox 52, the DataTransfer.types property returns a frozen array of DOMStrings as per spec, rather than a DOMStringList.Firefox for Android: As of Firefox for Android 52, the DataTransfer.types property returns a frozen array of DOMStrings as per spec, rather than a DOMStringList.
api.DataTransfer.clearData 📋Safari6/8/2009 Edge7/29/20152242
api.DataTransfer.dropEffect 📋Safari6/8/2009 Edge7/29/20152242
api.DataTransfer.effectAllowed 📋Safari6/8/2009 Edge7/29/20152242
api.DataTransfer.files 📋Safari6/8/2009 Edge7/29/20152242
api.DataTransfer.getData 📋Safari6/8/2009 Edge7/29/20152242
api.DataTransfer.setData 📋Firefox6/30/2009 Edge7/29/20152220
api.DataTransfer.types 📋Safari6/8/2009 Edge7/29/20152242
Internet Explorer: The property returns a DOMStringList.Internet Explorer: Text is returned instead of text/plainOpera: As of Opera 12, Text is returned instead of text/plain
api.DedicatedWorkerGlobalScope 📋Safari6/8/2009 Edge7/29/20152242
api.DedicatedWorkerGlobalScope.close 📋Safari6/8/2009 Edge7/29/20152242
api.DedicatedWorkerGlobalScope.message_event 📋Safari6/8/2009 Edge7/29/20152242
api.DedicatedWorkerGlobalScope.postMessage 📋Safari6/8/2009 Edge7/29/20152242
Deno: The message parameter does not support cloning Blob values.Deno: The message parameter does not support cloning Blob values.Deno: The transfer parameter does not accept ArrayBuffer items. Passing an ArrayBuffer results in an error being thrown.Deno: The message parameter does not support cloning SharedArrayBuffer or Blob values.Deno: The transfer parameter is ignored.Deno: Data passed in the message parameter is serialized with JSON, not the structured clone algorithm.Deno: The transfer parameter is ignored.
api.DelayNode 📋Safari10/22/2013 Edge7/29/2015645
api.DelayNode.delayTime 📋Safari10/22/2013 Edge7/29/2015645
api.Document 📋Safari6/23/2003 Edge7/29/20154419
api.Document.DOMContentLoaded_event 📋Firefox11/9/2004 Edge7/29/20153914
api.Document.URL 📋Safari10/26/2007 Edge7/29/20152833
Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.activeElement 📋Firefox6/17/2008 Edge7/29/20152598
Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.adoptNode 📋Firefox11/9/2004 Edge7/29/20153914
api.Document.characterSet 📋Firefox11/9/2004 Edge7/29/20153914
Chrome: charset alias was made read-only in Chrome 45.Chrome Android: charset alias was made read-only in Chrome Android 45.Quest Browser: charset alias was made read-only in Quest Browser 5.0.Opera: charset alias was made read-only in Opera 45.Opera Android: charset alias was made read-only in Opera 45.Samsung Internet: charset alias was made read-only in Samsung Internet 5.0.WebView Android: charset alias was made read-only in WebView 45.
api.Document.compatMode 📋Safari7/20/2011 Edge7/29/20151470
Chrome: Only supported for HTMLDocument, not all Document objects.Firefox: Only supported for HTMLDocument, not all Document objects.Firefox for Android: Only supported for HTMLDocument, not all Document objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.createAttributeNS 📋Safari6/23/2003 Edge7/29/20154419
api.Document.createCDATASection 📋Safari6/23/2003 Edge7/29/20154419
api.Document.createComment 📋Safari6/23/2003 Edge7/29/20154419
api.Document.createDocumentFragment 📋Safari6/23/2003 Edge7/29/20154419
api.Document.createElement 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Doesn't conform to the DOM spec for XUL and XHTML documents: localName and namespaceURI are not set to null on the created element.
api.Document.createElementNS 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Doesn't conform to the DOM spec for XUL and XHTML documents: localName and namespaceURI are not set to null on the created element.
api.Document.createEvent 📋Safari6/23/2003 Edge7/29/20154419
Firefox: From version 67, creating touch events using this method is no longer supported.
api.Document.createExpression 📋Firefox11/9/2004 Edge7/29/20153914
api.Document.createNSResolver 📋Firefox11/9/2004 Edge7/29/20153914
api.Document.createNodeIterator 📋Firefox11/9/2004 Edge7/29/20153914
api.Document.createProcessingInstruction 📋Safari6/23/2003 Edge7/29/20154419
api.Document.createRange 📋Safari6/23/2003 Edge7/29/20154419
api.Document.createTextNode 📋Safari6/23/2003 Edge7/29/20154419
api.Document.createTreeWalker 📋Firefox11/9/2004 Edge7/29/20153914
api.Document.currentScript 📋Firefox3/22/2011 Edge7/29/20151590
api.Document.defaultView 📋Safari6/23/2003 Edge7/29/20154419
api.Document.doctype 📋Safari6/23/2003 Edge7/29/20154419
api.Document.documentElement 📋Safari6/23/2003 Edge7/29/20154419
api.Document.elementFromPoint 📋Firefox6/17/2008 Edge7/29/20152598
Chrome: Before Chrome 66, this method returned null when the element was a child of a host node. See bug 40537452.Chrome Android: Before Chrome Android 66, this method returned null when the element was a child of a host node. See bug 40537452.Quest Browser: Before Quest Browser 5.0, this method returned null when the element was a child of a host node. See bug 40537452.Opera: Before Opera 53, this method returned null when the element was a child of a host node. See bug 40537452.Opera Android: Before Opera Android 47, this method returned null when the element was a child of a host node. See bug 40537452.Samsung Internet: Before Samsung Internet 9.0, this method returned null when the element was a child of a host node. See bug 40537452.WebView Android: Before WebView Android 66, this method returned null when the element was a child of a host node. See bug 40537452.
api.Document.evaluate 📋Firefox11/9/2004 Edge7/29/20153914
api.Document.execCommand.insertHTML Firefox11/9/2004 Edge7/29/20153914
api.Document.getElementById 📋Safari6/23/2003 Edge7/29/20154419
api.Document.getElementsByClassName 📋Safari3/18/2008 Edge7/29/20152689
api.Document.getElementsByTagName 📋Safari6/23/2003 Edge7/29/20154419
api.Document.getElementsByTagNameNS 📋Safari6/23/2003 Edge7/29/20154419
api.Document.hasFocus 📋Firefox6/17/2008 Edge7/29/20152598
Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.hidden 📋Firefox1/8/2013 Edge7/29/2015932
Firefox: Since Firefox 56 it also returns true on macOS when the window is completely hidden by another non-translucent application.Firefox for Android: Since Firefox for Android 56 it also returns true on macOS when the window is completely hidden by another non-translucent application.
api.Document.implementation 📋Safari6/23/2003 Edge7/29/20154419
api.Document.importNode 📋Safari6/23/2003 Edge7/29/20154419
api.Document.lastModified 📋Firefox11/9/2004 Edge7/29/20153914
Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.location 📋Firefox11/9/2004 Edge7/29/20153914
Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.querySelector 📋Safari3/18/2008 Edge7/29/20152689
Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors.
api.Document.querySelectorAll 📋Safari3/18/2008 Edge7/29/20152689
Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors.
api.Document.readyState 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: Internet Explorer 9 and 10 have bugs where the 'interactive' state can be fired too early before the document has finished parsing.Internet Explorer: Only supports 'complete'.Opera: Opera Presto fires 'complete' late after the 'load' event (in an incorrect order as per HTML5 standard specification).Opera Android: Opera Presto fires 'complete' late after the 'load' event (in an incorrect order as per HTML5 standard specification).
api.Document.readystatechange_event 📋Firefox3/22/2011 Edge7/29/20151590
api.Document.referrer 📋Safari6/23/2003 Edge7/29/20154419
api.Document.scroll_event 📋Safari4/29/2005 Edge7/29/20153743
api.Document.styleSheets 📋Firefox11/9/2004 Edge7/29/20153914
api.Document.title 📋Firefox11/9/2004 Edge7/29/20153914
Safari: Only supported for HTMLDocument and XMLDocument, but not SVGDocument objects.Safari: Only supported for HTMLDocument, not all Document objects.Safari on iOS: Only supported for HTMLDocument and XMLDocument, but not SVGDocument objects.Safari on iOS: Only supported for HTMLDocument, not all Document objects.WebView on iOS: Only supported for HTMLDocument and XMLDocument, but not SVGDocument objects.WebView on iOS: Only supported for HTMLDocument, not all Document objects.
api.Document.visibilityState 📋Firefox1/8/2013 Edge7/29/2015932
api.DocumentFragment 📋Firefox11/9/2004 Edge7/29/20153914
api.DocumentFragment.querySelector 📋Safari6/8/2009 Edge7/29/20152242
Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors.
api.DocumentFragment.querySelectorAll 📋Safari6/8/2009 Edge7/29/20152242
Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors.
api.DocumentType 📋Firefox11/9/2004 Edge7/29/20153914
api.DocumentType.name 📋Firefox11/9/2004 Edge7/29/20153914
api.DocumentType.publicId 📋Firefox11/9/2004 Edge7/29/20153914
api.DocumentType.remove 📋Firefox8/6/2013 Edge7/29/2015722
api.DocumentType.systemId 📋Firefox11/9/2004 Edge7/29/20153914
api.DynamicsCompressorNode 📋Safari7/25/2012 Edge7/29/20151099
api.DynamicsCompressorNode.attack 📋Safari7/25/2012 Edge7/29/20151099
api.DynamicsCompressorNode.knee 📋Safari7/25/2012 Edge7/29/20151099
api.DynamicsCompressorNode.ratio 📋Safari7/25/2012 Edge7/29/20151099
api.DynamicsCompressorNode.reduction 📋Safari7/25/2012 Edge7/29/20151099
Chrome: Before version 52, this was an AudioParam..Chrome Android: Before version 52, this was an AudioParam..Quest Browser: Before version 5.0, this was an AudioParam..Samsung Internet: Before Samsung Internet 6.0, this was an AudioParam..WebView Android: Before version 52, this was an AudioParam..
api.DynamicsCompressorNode.release 📋Safari7/25/2012 Edge7/29/20151099
api.DynamicsCompressorNode.threshold 📋Safari7/25/2012 Edge7/29/20151099
api.Element 📋Safari6/23/2003 Edge7/29/20154419
api.Element.attributes 📋Safari6/23/2003 Edge7/29/20154419
api.Element.blur_event 📋Safari3/18/2008 Edge7/29/20152689
Firefox: The interface for this event is Event, not FocusEvent.Firefox for Android: The interface for this event is Event, not FocusEvent.
api.Element.childElementCount 📋Safari6/8/2009 Edge7/29/20152242
api.Element.children 📋Safari6/8/2009 Edge7/29/20152242
Internet Explorer: Also includes non-standard HTMLCommentElement nodes.
api.Element.className 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Only supported for HTMLElement, not all Element objects, such as SVGElement.Chrome Android: Only supported for HTMLElement, not all Element objects, such as SVGElement.Samsung Internet: Only supported for HTMLElement, not all Element objects, such as SVGElement.
api.Element.click_event 📋Safari10/26/2007 Edge7/29/20152833
Firefox: Beginning in Firefox 68, Firefox no longer incorrectly sends a click event for buttons other than the primary mouse button; previously, there were circumstances in which this would occur. One example: middle-clicking a link would send a click to the document's <html> element.
api.Element.clientHeight 📋Firefox11/9/2004 Edge7/29/20153914
api.Element.clientLeft 📋Safari10/26/2007 Edge7/29/20152833
api.Element.clientTop 📋Safari10/26/2007 Edge7/29/20152833
api.Element.clientWidth 📋Firefox11/9/2004 Edge7/29/20153914
api.Element.compositionend_event 📋Safari6/7/2010 Edge7/29/20151878
api.Element.compositionstart_event 📋Safari6/7/2010 Edge7/29/20151878
api.Element.compositionupdate_event 📋Safari6/7/2010 Edge7/29/20151878
api.Element.contextmenu_event 📋Safari10/26/2007 Edge7/29/20152833
api.Element.copy_event 📋Safari10/26/2007 Edge7/29/20152833
Internet Explorer: Before Internet Explorer 9, this event is not supported via addEventListener; however, the event handler is supported since IE 5.5. The event can be listened to via element.oncopy.
api.Element.cut_event 📋Safari10/26/2007 Edge7/29/20152833
Internet Explorer: Before Internet Explorer 9, this event is not supported via addEventListener; however, the event handler is supported since IE 5.5. The event can be listened to via element.oncopy.
api.Element.dblclick_event 📋Safari10/26/2007 Edge7/29/20152833
Firefox: Starting in Firefox 68, dblclick events are only sent for the primary mouse button, per the specification.
api.Element.firstElementChild 📋Safari6/8/2009 Edge7/29/20152242
api.Element.focus_event 📋Safari3/18/2008 Edge7/29/20152689
Firefox: The interface for this event is Event, not FocusEvent.Firefox for Android: The interface for this event is Event, not FocusEvent.
api.Element.getAttribute 📋Safari6/23/2003 Edge7/29/20154419
api.Element.getAttributeNS 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Starting in Firefox 13, null is always returned instead of the empty string, as per the DOM4 specification. Previously, there were cases in which an empty string could be returned.Firefox for Android: Starting in Firefox for Android 14, null is always returned instead of the empty string, as per the DOM4 specification. Previously, there were cases in which an empty string could be returned.
api.Element.getAttributeNode 📋Safari6/23/2003 Edge7/29/20154419
api.Element.getAttributeNodeNS 📋Safari6/23/2003 Edge7/29/20154419
api.Element.getBoundingClientRect 📋Firefox6/17/2008 Edge7/29/20152598
Safari on iOS: Safari for iOS will modify the effective viewport based on the user zoom. This results in incorrect values whenever the user has zoomed.WebView on iOS: Safari for iOS will modify the effective viewport based on the user zoom. This results in incorrect values whenever the user has zoomed.
api.Element.getClientRects 📋Firefox6/17/2008 Edge7/29/20152598
api.Element.getElementsByTagName 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Chrome Android: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Firefox: Before Firefox 19, this method was returning a NodeList; it was then changed to reflect the change in the spec.Firefox for Android: Before Firefox for Android 19, this method was returning a NodeList; it was then changed to reflect the change in the spec.Quest Browser: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Opera: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Safari: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Safari on iOS: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Samsung Internet: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.WebView Android: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.WebView on iOS: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.
api.Element.getElementsByTagName.all_elements_selector Safari6/23/2003 Edge7/29/20154419
api.Element.getElementsByTagNameNS 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Chrome Android: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Firefox: The behavior of element.getElementsByTagNameNS changed between Firefox 3.5 and Firefox 3.6. In Firefox 3.5 and before, this function would automatically case-fold any queries so that a search for "foo" would match "Foo" or "foo". In Firefox 3.6 and later this function is now case-sensitive so that a query for "foo" will only match "foo" and not "Foo". For more background on this, please see the comment from Henri Sivonen about the change. You can also look at the relevant part of the standard, which states which parts of the API are case-sensitive and which parts aren't.Firefox: Before Firefox 19, this method was returning a NodeList; it was then changed to reflects the spec change.Firefox for Android: Before Firefox 19, this method was returning a NodeList; it was then changed to reflects the spec change.Quest Browser: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Opera: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Opera Android: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Safari: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Safari on iOS: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.Samsung Internet: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.WebView Android: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.WebView on iOS: Initially, this method was returning a NodeList; it was then changed to reflect the spec change.
api.Element.getElementsByTagNameNS.all_elements_selector Safari6/23/2003 Edge7/29/20154419
api.Element.hasAttribute 📋Safari6/23/2003 Edge7/29/20154419
api.Element.hasAttributeNS 📋Safari6/23/2003 Edge7/29/20154419
api.Element.hasAttributes 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 35, it was implemented on the Node interface.Firefox for Android: Before Firefox for Android 35, it was implemented on the Node interface.
api.Element.id 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Only supported for HTMLElement, not all Element objects, such as SVGElement.Chrome Android: Only supported for HTMLElement, not all Element objects, such as SVGElement.Samsung Internet: Only supported for HTMLElement, not all Element objects, such as SVGElement.
api.Element.innerHTML 📋Safari6/23/2003 Edge7/29/20154419
api.Element.keydown_event 📋Safari2/2/2004 Edge7/29/20154195
api.Element.keypress_event 📋Safari4/15/2005 Edge7/29/20153757
Chrome: Chrome does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.Chrome Android: Chrome Android does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.Firefox: As of Firefox 65, the keypress event is no longer fired for non-printable keys, except for the Enter key, and the Shift + Enter and Ctrl + Enter key combinations (these were kept for cross-browser compatibility purposes).Firefox for Android: As of Firefox for Android 65, the keypress event is no longer fired for non-printable keys, except for the Enter key, and the Shift + Enter and Ctrl + Enter key combinations (these were kept for cross-browser compatibility purposes).Quest Browser: Quest Browser does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.Opera: Opera does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.Opera Android: Opera does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.Samsung Internet: Samsung Internet does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.WebView Android: Chrome does not fire the keypress event for known keyboard shortcuts. Which keyboard shortcuts are known depends on the user's system. Use the keydown event to implement keyboard shortcuts.
api.Element.keyup_event 📋Safari2/2/2004 Edge7/29/20154195
api.Element.lastElementChild 📋Safari6/8/2009 Edge7/29/20152242
api.Element.localName 📋Safari6/23/2003 Edge7/29/20154419
api.Element.mousedown_event 📋Safari6/8/2009 Edge7/29/20152242
api.Element.mouseenter_event 📋Firefox1/31/2012 Edge7/29/20151275
api.Element.mouseleave_event 📋Firefox1/31/2012 Edge7/29/20151275
api.Element.mousemove_event 📋Safari6/8/2009 Edge7/29/20152242
api.Element.mouseout_event 📋Safari6/23/2003 Edge7/29/20154419
api.Element.mouseover_event 📋Safari6/8/2009 Edge7/29/20152242
api.Element.mouseup_event 📋Safari6/8/2009 Edge7/29/20152242
api.Element.namespaceURI 📋Safari6/23/2003 Edge7/29/20154419
api.Element.nextElementSibling 📋Safari6/8/2009 Edge7/29/20152242
api.Element.outerHTML 📋Safari4/15/2005 Edge7/29/20153757
api.Element.paste_event 📋Safari10/26/2007 Edge7/29/20152833
Internet Explorer: Before Internet Explorer 11, copying files does not trigger the paste event.Internet Explorer: Before Internet Explorer 9, this event is not supported via addEventListener; however, the event handler is supported since IE 5.5. The event can be listened to via element.oncopy.
api.Element.prefix 📋Safari6/23/2003 Edge7/29/20154419
api.Element.previousElementSibling 📋Safari6/8/2009 Edge7/29/20152242
api.Element.querySelector 📋Safari3/18/2008 Edge7/29/20152689
Internet Explorer: querySelector() is supported, but only for CSS 2.1 selectors.
api.Element.querySelectorAll 📋Safari3/18/2008 Edge7/29/20152689
Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors.
api.Element.remove 📋Firefox8/6/2013 Edge7/29/2015722
api.Element.removeAttribute 📋Safari6/23/2003 Edge7/29/20154419
Edge: This function doesn't respect boolean attributes' default values. See bug 12087679.
api.Element.removeAttributeNS 📋Safari6/23/2003 Edge7/29/20154419
api.Element.removeAttributeNode 📋Safari6/23/2003 Edge7/29/20154419
api.Element.scrollHeight 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 21, when an element's content does not generate a vertical scrollbar, then its scrollHeight property is equal to its clientHeight property. This can mean either the content is too short to require a scrollbar or that the element has a CSS style overflow value of visible (non-scrollable).Firefox for Android: Before Firefox for Android 21, when an element's content does not generate a vertical scrollbar, then its scrollHeight property is equal to its clientHeight property. This can mean either the content is too short to require a scrollbar or that the element has a CSS style overflow value of visible (non-scrollable).Internet Explorer: In Internet Explorer 5 through 7, if padding is set, the value of scrollHeight is equal to the sum of the top and bottom padding. This behavior was fixed in Internet Explorer 8.
api.Element.scrollTop 📋Safari6/23/2003 Edge7/29/20154419
api.Element.scrollWidth 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: In Internet Explorer 5 through 7, if padding is set, the value of scrollWidth is equal to the sum of the left and right padding. This behavior was fixed in Internet Explorer 8.
api.Element.scroll_event 📋Safari4/15/2005 Edge7/29/20153757
api.Element.setAttribute 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: In Internet Explorer 7 and earlier, setAttribute doesn't set styles and removes events when you try to set them.
api.Element.setAttributeNS 📋Safari6/23/2003 Edge7/29/20154419
api.Element.setAttributeNode 📋Safari6/23/2003 Edge7/29/20154419
api.Element.setAttributeNodeNS 📋Safari6/23/2003 Edge7/29/20154419
Edge: Returns a ClientRectList with ClientRect objects (which do not contain x and y properties) instead of DOMRect objects.Internet Explorer: Returns a ClientRectList with ClientRect objects (which do not contain x and y properties) instead of DOMRect objects.
api.Element.tagName 📋Safari6/23/2003 Edge7/29/20154419
api.Element.wheel_event 📋Firefox11/20/2012 Edge7/29/2015981
Internet Explorer: The onwheel event handler property is not supported. To listen to this event, use element.addEventListener('wheel', function() {});. See IE bug 782835.
api.ErrorEvent 📋Safari7/25/2012 Edge7/29/20151099
api.ErrorEvent.colno 📋Firefox7/22/2014 Edge7/29/2015372
api.ErrorEvent.filename 📋Safari7/25/2012 Edge7/29/20151099
api.ErrorEvent.lineno 📋Safari7/25/2012 Edge7/29/20151099
api.ErrorEvent.message 📋Safari7/25/2012 Edge7/29/20151099
api.Event 📋Safari6/23/2003 Edge7/29/20154419
Node.js: Only available as an internal instance.
api.Event.Event 📋Firefox3/13/2012 Edge7/29/20151233
api.Event.bubbles 📋Safari6/23/2003 Edge7/29/20154419
Node.js: This is not used in Node.js and is provided purely for completeness.
api.Event.cancelable 📋Safari6/23/2003 Edge7/29/20154419
api.Event.currentTarget 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: On Internet Explorer 6 through 8, the event model is different. Event listeners are attached with the non-standard EventTarget.attachEvent method. In this model, there is no equivalent to event.currentTarget and this is the global object. One solution to emulate the event.currentTarget feature is to wrap your handler in a function calling the handler using Function.prototype.call with the element as a first argument. This way, this will be the expected value.
api.Event.defaultPrevented 📋Safari6/7/2010 Edge7/29/20151878
api.Event.eventPhase 📋Safari6/23/2003 Edge7/29/20154419
api.Event.initEvent 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 17, a call to this method after the dispatching of the event raised an exception instead of doing nothing.Firefox for Android: Before Firefox for Android 17, a call to this method after the dispatching of the event raised an exception instead of doing nothing.
api.Event.preventDefault 📋Safari6/23/2003 Edge7/29/20154419
api.Event.stopImmediatePropagation 📋Safari6/7/2010 Edge7/29/20151878
api.Event.stopPropagation 📋Safari6/23/2003 Edge7/29/20154419
Node.js: This is not used in Node.js and is provided purely for completeness.
api.Event.target 📋Safari6/23/2003 Edge7/29/20154419
api.Event.timeStamp 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Starting with Chrome 49, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Chrome Android: Starting with Chrome Android 49, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Deno: In Deno this represents the time since UNIX epoch, not since startup. This is considered a bug, see #10835.Firefox: Starting with Chrome 49, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Firefox for Android: Starting with Chrome 49, Firefox for Android 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Internet Explorer: Starting with Chrome 49, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Quest Browser: Starting with Quest Browser 5.0, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Opera: Starting with Chrome 49, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Opera Android: Starting with Chrome 49, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.Samsung Internet: Starting with Samsung Internet 5.0, Firefox 54 and Opera 36, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.WebView Android: Starting with version 49, this property returns DOMHighResTimeStamp instead of DOMTimeStamp.
api.Event.type 📋Safari6/23/2003 Edge7/29/20154419
api.EventTarget 📋Safari6/23/2003 Edge7/29/20154419
Node.js: Only available as an internal instance.Safari: window.EventTarget did not exist on versions of Safari before 10.1.Safari on iOS: window.EventTarget did not exist on versions of Safari iOS before 10.3.WebView on iOS: window.EventTarget did not exist on versions of Safari iOS before 10.3.
api.EventTarget.addEventListener 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Before Chrome 49, the type and listener parameters were optional.Chrome Android: Before Chrome Android 49, the type and listener parameters were optional.Internet Explorer: Older versions of IE supported an equivalent, proprietary EventTarget.attachEvent() method.Quest Browser: Before Quest Browser 5.0, the type and listener parameters were optional.Samsung Internet: Before Samsung Internet 5.0, the type and listener parameters were optional.WebView Android: Before Chrome 49, the type and listener parameters were optional.
api.EventTarget.addEventListener.useCapture_parameter_optional Safari6/23/2003 Edge7/29/20154419
api.EventTarget.dispatchEvent 📋Firefox10/24/2006 Edge7/29/20153200
Internet Explorer: Older versions of IE supported an equivalent, proprietary EventTarget.fireEvent() method.
api.EventTarget.removeEventListener 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: Older versions of IE supported an equivalent, proprietary EventTarget.detachEvent() method.
api.EventTarget.removeEventListener.useCapture_parameter_optional Safari6/23/2003 Edge7/29/20154419
api.File 📋Safari6/8/2009 Edge7/29/20152242
Firefox: Non-standard implementation.Firefox for Android: Non-standard implementation.Node.js: Before 23.0.0, File instance cannot be cloned.Node.js: Available as a part of the buffer module.Node.js: Available as a part of the buffer module.
api.File.name 📋Firefox1/21/2010 Edge7/29/20152015
api.FileList 📋Firefox6/17/2008 Edge7/29/20152598
api.FileList.item 📋Firefox6/17/2008 Edge7/29/20152598
api.FileList.length 📋Firefox6/17/2008 Edge7/29/20152598
api.FileReader 📋Firefox1/21/2010 Edge7/29/20152015
Firefox: Before Firefox 4, Blob parameters were File parameters.
api.FileReader.FileReader 📋Firefox1/21/2010 Edge7/29/20152015
api.FileReader.abort 📋Firefox1/21/2010 Edge7/29/20152015
api.FileReader.abort_event 📋Firefox1/21/2010 Edge7/29/20152015
api.FileReader.error 📋Firefox1/21/2010 Edge7/29/20152015
Firefox: Before Firefox 13, the error property returned a FileError object.Firefox: From Firefox 13 to Firefox 58, the error property returned a DOMError object.Firefox: From Firefox 58, the error property returns a DOMException object.Firefox for Android: From Firefox 32 to Firefox 58, the error property returned a DOMError object.Firefox for Android: From Firefox 58, the error property returns a DOMException object.Internet Explorer: The error property returns a DOMError object.Safari: The error property returns a DOMError object.Safari on iOS: The error property returns a DOMError object.WebView on iOS: The error property returns a DOMError object.
api.FileReader.error_event 📋Firefox1/21/2010 Edge7/29/20152015
api.FileReader.load_event 📋Firefox1/21/2010 Edge7/29/20152015
api.FileReader.loadend_event 📋Firefox1/21/2010 Edge7/29/20152015
api.FileReader.progress_event 📋Firefox1/21/2010 Edge7/29/20152015
api.FileReader.readAsArrayBuffer 📋Firefox1/21/2010 Edge7/29/20152015
api.FileReader.readAsBinaryString 📋Firefox1/21/2010 Edge7/29/20152015
api.FileReader.readAsDataURL 📋Firefox1/21/2010 Edge7/29/20152015
Firefox for Android: Using the camera in Android 8.x raises an exception. See bug 1511083.
api.FileReader.readAsText 📋Firefox1/21/2010 Edge7/29/20152015
api.FileReader.readyState 📋Firefox1/21/2010 Edge7/29/20152015
api.FileReader.result 📋Firefox1/21/2010 Edge7/29/20152015
api.FileReaderSync 📋Firefox11/8/2011 Edge7/29/20151359
api.FileReaderSync.FileReaderSync 📋Firefox11/8/2011 Edge7/29/20151359
api.FileReaderSync.readAsArrayBuffer 📋Firefox11/8/2011 Edge7/29/20151359
api.FileReaderSync.readAsBinaryString 📋Firefox11/8/2011 Edge7/29/20151359
api.FileReaderSync.readAsDataURL 📋Firefox11/8/2011 Edge7/29/20151359
api.FileReaderSync.readAsText 📋Firefox11/8/2011 Edge7/29/20151359
api.FileReaderSync.worker_support Firefox11/8/2011 Edge7/29/20151359
api.FocusEvent 📋Firefox9/17/2013 Edge7/29/2015680
api.FocusEvent.FocusEvent 📋Firefox9/17/2013 Edge7/29/2015680
api.FocusEvent.relatedTarget 📋Firefox9/17/2013 Edge7/29/2015680
api.FormData 📋Safari6/7/2010 Edge7/29/20151878
Firefox: Before Firefox 7, specifying a Blob as the data to append to the object, the filename reported in the Content-Disposition HTTP header was an empty string, resulting in errors on some servers. Starting with Firefox 7, the filename blob is sent.Firefox for Android: Before Firefox for Android 7, specifying a Blob as the data to append to the object, the filename reported in the Content-Disposition HTTP header was an empty string, resulting in errors on some servers. Starting with Firefox for Android 7, the filename blob is sent.WebView Android: XHR in Android 4.0 sends empty content for FormData with blob.
api.FormData.FormData 📋Safari6/7/2010 Edge7/29/20151878
api.FormData.append 📋Safari6/7/2010 Edge7/29/20151878
Firefox: Before Firefox 7, specifying a Blob as the data to append to the object, the filename reported in the Content-Disposition HTTP header was an empty string, resulting in errors on some servers. Starting with Firefox 7, the filename blob is sent.Firefox for Android: Before Firefox for Android 7, specifying a Blob as the data to append to the object, the filename reported in the Content-Disposition HTTP header was an empty string, resulting in errors on some servers. Starting with Firefox for Android 7, the filename blob is sent.Internet Explorer: With the "Include local directory pass when uploading files to a server" option enabled, IE will change the filename inside the Blob on the fly. To have direct control of the sent filename, the developer should send the filename as the third parameter value, i.e. formData.append(name, value, filename).WebView Android: XHR in Android 4.0 sends empty content for FormData with blob.
api.FormData.append.filename_parameter Safari7/25/2012 Edge7/29/20151099
api.GainNode 📋Safari10/22/2013 Edge7/29/2015645
api.GainNode.gain 📋Safari10/22/2013 Edge7/29/2015645
api.Geolocation 📋Firefox6/30/2009 Edge7/29/20152220
Firefox: GPSD (GPS daemon) support added in Firefox 3.6. WiFi-based location is provided by Google (privacy) or a custom provider (MLS instructions).
api.Geolocation.clearWatch 📋Firefox6/30/2009 Edge7/29/20152220
api.Geolocation.getCurrentPosition 📋Firefox6/30/2009 Edge7/29/20152220
api.Geolocation.watchPosition 📋Firefox6/30/2009 Edge7/29/20152220
api.GeolocationCoordinates.accuracy 📋Firefox6/30/2009 Edge7/29/20152220
api.GeolocationCoordinates.altitude 📋Firefox6/30/2009 Edge7/29/20152220
api.GeolocationCoordinates.altitudeAccuracy 📋Firefox6/30/2009 Edge7/29/20152220
api.GeolocationCoordinates.heading 📋Firefox6/30/2009 Edge7/29/20152220
api.GeolocationCoordinates.latitude 📋Firefox6/30/2009 Edge7/29/20152220
api.GeolocationCoordinates.longitude 📋Firefox6/30/2009 Edge7/29/20152220
api.GeolocationCoordinates.speed 📋Firefox6/30/2009 Edge7/29/20152220
api.GeolocationPosition.coords 📋Firefox6/30/2009 Edge7/29/20152220
api.GeolocationPosition.timestamp 📋Firefox6/30/2009 Edge7/29/20152220
api.GeolocationPositionError.code 📋Firefox6/30/2009 Edge7/29/20152220
api.GeolocationPositionError.message 📋Firefox6/30/2009 Edge7/29/20152220
api.HTMLAllCollection 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLAllCollection.item 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLAllCollection.length 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLAllCollection.namedItem 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLAnchorElement 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.charset 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.coords 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.hash 📋Safari6/23/2003 Edge7/29/20154419
Firefox: From Firefox 29 to Firefox 40, the returned value was incorrectly percent-decoded.Firefox for Android: From Firefox for Android 29 to Firefox for Android 40, the returned value was incorrectly percent-decoded.
api.HTMLAnchorElement.host 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: In Internet Explorer 9, the host of an <a> always include the port (e.g. developer.mozilla.org:443), even if there is no explicit port in the href attribute value.
api.HTMLAnchorElement.hostname 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.href 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.hreflang 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.name 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.pathname 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed.Firefox for Android: Before Firefox for Android 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed.
api.HTMLAnchorElement.port 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.protocol 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.rel 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.rev 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.search 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed.Firefox for Android: Before Firefox for Android 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed.
api.HTMLAnchorElement.shape 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.target 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.text 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAnchorElement.toString 📋Safari10/26/2007 Edge7/29/20152833
api.HTMLAnchorElement.type 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAreaElement 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAreaElement.alt 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAreaElement.coords 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAreaElement.hash 📋Safari6/23/2003 Edge7/29/20154419
Firefox: From Firefox 29 to Firefox 40, the returned value was incorrectly percent-decoded.Firefox for Android: From Firefox for Android 29 to Firefox for Android 40, the returned value was incorrectly percent-decoded.
api.HTMLAreaElement.host 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: In Internet Explorer 9, the host of an <a> always include the port (e.g. developer.mozilla.org:443), even if there is no explicit port in the href attribute value.
api.HTMLAreaElement.hostname 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAreaElement.href 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAreaElement.noHref 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAreaElement.pathname 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed.Firefox for Android: Before Firefox for Android 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed.
api.HTMLAreaElement.port 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAreaElement.protocol 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAreaElement.search 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed.Firefox for Android: Before Firefox for Android 53, the pathname and search HTMLHyperlinkElementUtils properties returned the wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return '/x?a=true&b=false' and search would return '', rather than '/x' and '?a=true&b=false' respectively. This has now been fixed.
api.HTMLAreaElement.shape 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAreaElement.target 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLAudioElement 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLAudioElement.Audio 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLBRElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLBRElement.clear 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLBaseElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLBaseElement.href 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLBaseElement.target 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLBodyElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLBodyElement.aLink 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLBodyElement.background 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLBodyElement.bgColor 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLBodyElement.link 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLBodyElement.text 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLBodyElement.vLink 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLButtonElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLButtonElement.checkValidity 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLButtonElement.disabled 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLButtonElement.form 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLButtonElement.formAction 📋Firefox3/22/2011 Edge7/29/20151590
Firefox: In Firefox 56, the implementation has been updated so that the formAction property returns the correct form submission URL, as per spec, when the associated button is being used to submit a form (bug 1366361).Firefox for Android: In Firefox for Android 56, the implementation has been updated so that the formAction property returns the correct form submission URL, as per spec, when the associated button is being used to submit a form (bug 1366361).
api.HTMLButtonElement.formEnctype 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLButtonElement.formMethod 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLButtonElement.formNoValidate 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLButtonElement.formTarget 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLButtonElement.name 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLButtonElement.setCustomValidity 📋Safari6/7/2010 Edge7/29/20151878
Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.WebView Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.
api.HTMLButtonElement.type 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLButtonElement.validationMessage 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLButtonElement.validity 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLButtonElement.value 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLButtonElement.willValidate 📋Safari6/8/2009 Edge7/29/20152242
api.HTMLCanvasElement 📋Safari4/29/2005 Edge7/29/20153743
api.HTMLCanvasElement.getContext 📋Safari4/29/2005 Edge7/29/20153743
api.HTMLCanvasElement.getContext.2d_context Safari4/29/2005 Edge7/29/20153743
api.HTMLCanvasElement.height 📋Firefox11/29/2005 Edge7/29/20153529
api.HTMLCanvasElement.toDataURL 📋Firefox10/24/2006 Edge7/29/20153200
api.HTMLCanvasElement.webglcontextlost_event 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLCanvasElement.webglcontextrestored_event 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLCanvasElement.width 📋Firefox11/29/2005 Edge7/29/20153529
api.HTMLCollection 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLCollection.item 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLCollection.length 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLCollection.namedItem 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLDListElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLDListElement.compact 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLDirectoryElement Safari6/23/2003 Edge7/29/20154419
api.HTMLDirectoryElement.compact 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLDivElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLDivElement.align 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLDocument 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLElement 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLElement.accessKey 📋Firefox6/21/2011 Edge7/29/20151499
api.HTMLElement.blur 📋Firefox11/29/2005 Edge7/29/20153529
api.HTMLElement.change_event 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLElement.click 📋Firefox6/17/2008 Edge7/29/20152598
Chrome: Before Chrome 19, click() is only defined on buttons and inputs.Chrome Android: Before Chrome Android 25, click() is only defined on buttons and inputs.Firefox: Before Firefox 5, click() is only defined on buttons and inputs, and has no effect on text and file inputs.Firefox: Starting in Firefox 75, the click() function works even when the element is not attached to a DOM tree.Firefox for Android: Before Firefox 5, click() is only defined on buttons and inputs, and has no effect on text and file inputs.Firefox for Android: Starting in Firefox for Android 79, the click() function works even when the element is not attached to a DOM tree.Quest Browser: Before Quest Browser 5.0, click() is only defined on buttons and inputs.Samsung Internet: Before Samsung Internet 1.5, click() is only defined on buttons and inputs.WebView Android: Before WebView Android 4.4, click() is only defined on buttons and inputs.
api.HTMLElement.contentEditable 📋Safari10/26/2007 Edge7/29/20152833
api.HTMLElement.dataset 📋Safari7/20/2011 Edge7/29/20151470
api.HTMLElement.dir 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLElement.drag_event 📋Safari3/18/2008 Edge7/29/20152689
Firefox: The drag event handler receives a DragEvent whose coordinate properties (clientX/clientY, pageX/pageY, screenX/screenY) are always 0. See bug 505521.Firefox for Android: The drag event handler receives a DragEvent whose coordinate properties (clientX/clientY, pageX/pageY, screenX/screenY) are always 0. See bug 505521.
api.HTMLElement.dragend_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLElement.dragenter_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLElement.draggable 📋Firefox10/24/2006 Edge7/29/20153200
api.HTMLElement.dragleave_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLElement.dragover_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLElement.dragstart_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLElement.drop_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLElement.error_event 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLElement.focus 📋Firefox11/29/2005 Edge7/29/20153529
Safari on iOS: If there's no hardware keyboard connected and the user has not yet interacted with the page, then calling focus() on an <input> element has no effect (for example, the element does not match the :focus selector).WebView on iOS: If there's no hardware keyboard connected and the user has not yet interacted with the page, then calling focus() on an <input> element has no effect (for example, the element does not match the :focus selector).
api.HTMLElement.hidden 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLElement.isContentEditable 📋Safari10/26/2007 Edge7/29/20152833
api.HTMLElement.lang 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLElement.load_event 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLElement.offsetHeight 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLElement.offsetLeft 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLElement.offsetParent 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLElement.offsetTop 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLElement.offsetWidth 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLElement.spellcheck 📋Firefox10/24/2006 Edge7/29/20153200
api.HTMLElement.style 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLElement.title 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLEmbedElement 📋Firefox11/9/2004 Edge7/29/20153914
Chrome: Starting with Chrome 58, this interface can no longer be called as a function.Chrome Android: Starting with Chrome Android 58, this interface can no longer be called as a function.Quest Browser: Starting with Quest Browser 5.0, this interface can no longer be called as a function.Opera: Starting with Opera 45, this interface can no longer be called as a function.Opera Android: Starting with Opera 45, this interface can no longer be called as a function.Samsung Internet: Starting with Samsung Internet 7.0, this interface can no longer be called as a function.WebView Android: Starting with WebView Android 58, this interface can no longer be called as a function.
api.HTMLEmbedElement.getSVGDocument 📋Firefox11/29/2005 Edge7/29/20153529
api.HTMLEmbedElement.height 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLEmbedElement.name 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLEmbedElement.src 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLEmbedElement.width 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFieldSetElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFieldSetElement.checkValidity 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLFieldSetElement.disabled 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLFieldSetElement.form 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFieldSetElement.setCustomValidity 📋Safari6/7/2010 Edge7/29/20151878
Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.WebView Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.
api.HTMLFieldSetElement.validationMessage 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLFieldSetElement.validity 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLFieldSetElement.willValidate 📋Safari6/8/2009 Edge7/29/20152242
api.HTMLFontElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFontElement.color 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFontElement.face 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFontElement.size 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormControlsCollection 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormControlsCollection.namedItem 📋Safari10/26/2007 Edge7/29/20152833
Firefox: Returned a NodeList instead of a RadioNodeList.Firefox for Android: Returned a NodeList instead of a RadioNodeList.
api.HTMLFormElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormElement.acceptCharset 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormElement.action 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormElement.autocomplete 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLFormElement.checkValidity 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLFormElement.elements 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormElement.encoding 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormElement.enctype 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormElement.length 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormElement.method 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormElement.name 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormElement.noValidate 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLFormElement.reset 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormElement.reset_event 📋Safari10/26/2007 Edge7/29/20152833
api.HTMLFormElement.submit 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormElement.submit_event 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFormElement.target 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameElement.contentDocument 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameElement.contentWindow 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameElement.frameBorder 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameElement.longDesc 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameElement.marginHeight 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameElement.marginWidth 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameElement.name 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameElement.noResize 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameElement.scrolling 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameElement.src 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameSetElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameSetElement.cols 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLFrameSetElement.rows 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLHRElement 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLHRElement.align 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLHRElement.noShade 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLHRElement.size 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLHRElement.width 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLHeadElement 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLHeadingElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLHeadingElement.align 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLHtmlElement 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLHtmlElement.version 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLIFrameElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLIFrameElement.align 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLIFrameElement.contentDocument 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLIFrameElement.contentWindow 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLIFrameElement.frameBorder 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLIFrameElement.getSVGDocument 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLIFrameElement.height 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLIFrameElement.longDesc 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLIFrameElement.marginHeight 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLIFrameElement.marginWidth 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLIFrameElement.name 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLIFrameElement.sandbox 📋Safari6/7/2010 Edge7/29/20151878
Chrome: Before Chrome 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Chrome Android: Before Chrome Android 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Firefox: Previously, the type of sandbox was a DOMString instead of a DOMSettableTokenList. This has been fixed with Firefox 29. Other browsers may still implement the property as DOMString since it was a late change in the specification.Firefox for Android: Previously, the type of sandbox was a DOMString instead of a DOMSettableTokenList. This has been fixed with Firefox for Android 29. Other browsers may still implement the property as DOMString since it was a late change in the specification.Quest Browser: Before Quest Browser 5.0, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Opera: Before Opera 37, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Opera Android: Before Opera Android 37, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.Samsung Internet: Before Samsung Internet 5.0, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.WebView Android: Before WebView Android 50, this property returned the deprecated child DOMSettableTokenList instead of DOMTokenList.
api.HTMLIFrameElement.scrolling 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLIFrameElement.src 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLIFrameElement.width 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLImageElement.Image 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLImageElement.align 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.alt 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.border 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.complete 📋Firefox11/9/2004 Edge7/29/20153914
Internet Explorer: IE reports false for broken images.
api.HTMLImageElement.crossOrigin 📋Firefox11/8/2011 Edge7/29/20151359
api.HTMLImageElement.height 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.hspace 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.isMap 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.longDesc 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.lowsrc 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.name 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.naturalHeight 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.naturalWidth 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.src 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.srcset 📋Safari10/16/2014 Edge7/29/2015286
api.HTMLImageElement.useMap 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.vspace 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.width 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLImageElement.x 📋Safari10/26/2007 Edge7/29/20152833
api.HTMLImageElement.y 📋Safari10/26/2007 Edge7/29/20152833
api.HTMLInputElement 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.accept 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.align 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.alt 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.autocomplete 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLInputElement.checkValidity 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.checked 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.defaultChecked 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.defaultValue 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.disabled 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.files 📋Firefox6/17/2008 Edge7/29/20152598
Internet Explorer: This property is read-only.
api.HTMLInputElement.form 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.formAction 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.formEnctype 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.formMethod 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.formNoValidate 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.formTarget 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.height 📋Firefox10/9/2012 Edge7/29/20151023
api.HTMLInputElement.indeterminate 📋Safari10/26/2007 Edge7/29/20152833
api.HTMLInputElement.invalid_event 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.max 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.maxLength 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.min 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.multiple 📋Safari6/8/2009 Edge7/29/20152242
api.HTMLInputElement.name 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.pattern 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.placeholder 📋Safari6/8/2009 Edge7/29/20152242
api.HTMLInputElement.readOnly 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.required 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.select 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.select_event 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.selectionEnd 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLInputElement.selectionStart 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLInputElement.setCustomValidity 📋Safari6/7/2010 Edge7/29/20151878
Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.WebView Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.
api.HTMLInputElement.setSelectionRange 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLInputElement.size 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.src 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.step 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.stepDown 📋Safari6/7/2010 Edge7/29/20151878
Firefox: Does not have a specific UI. There are still differences with the latest spec; see bug 835773.Firefox for Android: Does not have a specific UI. There are still differences with the latest spec; see bug 835773.
api.HTMLInputElement.stepUp 📋Safari6/7/2010 Edge7/29/20151878
Firefox: Does not have a specific UI. There are still differences with the latest spec; see bug 835773.Firefox for Android: Does not have a specific UI. There are still differences with the latest spec; see bug 835773.
api.HTMLInputElement.type 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.useMap 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.validationMessage 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.validity 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.value 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLInputElement.valueAsNumber 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLInputElement.width 📋Firefox10/9/2012 Edge7/29/20151023
api.HTMLInputElement.willValidate 📋Safari6/8/2009 Edge7/29/20152242
api.HTMLLIElement 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 10, Gecko incorrectly reflected negative value attributes to 0.Firefox for Android: Before Firefox for Android 10, Gecko incorrectly reflected negative value attributes to 0.
api.HTMLLIElement.type 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLIElement.value 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLabelElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLLabelElement.form 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLLabelElement.htmlFor 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLLegendElement 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLegendElement.align 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLegendElement.form 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLinkElement 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLinkElement.charset 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLinkElement.disabled 📋Safari6/23/2003 Edge7/29/20154419
Chrome: In Chrome and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Chrome Android: In Chrome Android and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Edge: Since Edge 79, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Quest Browser: In Quest Browser and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Opera: In Chrome and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Opera Android: In Chrome and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.Samsung Internet: In Chrome and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.WebView Android: In WebView Android and other Blink-based browsers, adding the disabled attribute using JavaScript does not remove the stylesheet from document.styleSheets.
api.HTMLLinkElement.href 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLinkElement.hreflang 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLinkElement.media 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLinkElement.rel 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLinkElement.rev 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLinkElement.sheet 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLinkElement.target 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLLinkElement.type 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLMapElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLMapElement.areas 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLMapElement.name 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLMediaElement 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.abort_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.addTextTrack 📋Safari7/25/2012 Edge7/29/20151099
api.HTMLMediaElement.autoplay 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.buffered 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.canPlayType 📋Safari6/8/2009 Edge7/29/20152242
Chrome: codecs string can contain any subset of optional parameters (should be all or none).Chrome: Errors if codecs string contains unexpected characters (should evaluate string up to character).Chrome Android: codecs string can contain any subset of optional parameters (should be all or none).Chrome Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).Edge: codecs string can contain any subset of optional parameters (should be all or none).Edge: Errors if codecs string contains unexpected characters (should evaluate string up to character).Firefox: Before Firefox 28, canPlayType() returned probably when asked about WebM audio or video files without the codecs parameter. Since multiple codecs are supported, this is not enough information to determine if a file can be played, so maybe is now correctly returned.Firefox: Before Firefox 101, canPlayType() ignored codecs parameter options for av01 codecs (treating them as av1).Firefox for Android: Before Firefox for Android 28, canPlayType() returned probably when asked about WebM audio or video files without the codecs parameter. Since multiple codecs are supported, this is not enough information to determine if a file can be played, so maybe is now correctly returned.Firefox for Android: Before Firefox for Android 101, canPlayType() ignored codecs parameter options for av01 codecs (treating them as av1).Quest Browser: codecs string can contain any subset of optional parameters (should be all or none).Quest Browser: Errors if codecs string contains unexpected characters (should evaluate string up to character).Opera: codecs string can contain any subset of optional parameters (should be all or none).Opera: Errors if codecs string contains unexpected characters (should evaluate string up to character).Opera Android: codecs string can contain any subset of optional parameters (should be all or none).Opera Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).Samsung Internet: codecs string can contain any subset of optional parameters (should be all or none).Samsung Internet: Errors if codecs string contains unexpected characters (should evaluate string up to character).WebView Android: codecs string can contain any subset of optional parameters (should be all or none).WebView Android: Errors if codecs string contains unexpected characters (should evaluate string up to character).
api.HTMLMediaElement.canplay_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.canplaythrough_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.controls 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.currentSrc 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.currentTime 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.defaultMuted 📋Firefox3/13/2012 Edge7/29/20151233
api.HTMLMediaElement.defaultPlaybackRate 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.duration 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.durationchange_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.emptied_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.ended 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.ended_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.error 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.error_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.load 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.loadeddata_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.loadedmetadata_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.loadstart_event 📋Safari6/8/2009 Edge7/29/20152242
api.HTMLMediaElement.loop 📋Safari6/8/2009 Edge7/29/20152242
api.HTMLMediaElement.muted 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.networkState 📋Safari3/18/2008 Edge7/29/20152689
Firefox: The NETWORK_LOADED state was removed to align with the HTML spec in Firefox 4.
api.HTMLMediaElement.pause 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.pause_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.paused 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.play 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.play_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.playbackRate 📋Safari3/18/2008 Edge7/29/20152689
Chrome: Setting the playbackRate to a negative value will throw an error.Chrome Android: Setting the playbackRate to a negative value will throw an error.Edge: Setting the playbackRate to a negative value will throw an error.Firefox: Setting the playbackRate to a negative value will throw an error.Firefox for Android: Setting the playbackRate to a negative value will throw an error.Quest Browser: Setting the playbackRate to a negative value will throw an error.Opera: Setting the playbackRate to a negative value will throw an error.Opera Android: Setting the playbackRate to a negative value will throw an error.Samsung Internet: Setting the playbackRate to a negative value will throw an error.WebView Android: Setting the playbackRate to a negative value will throw an error.
api.HTMLMediaElement.played 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.playing_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.preload 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLMediaElement.progress_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.ratechange_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.readyState 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.seekable 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.seeked_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.seeking 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.seeking_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.src 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.stalled_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.suspend_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.textTracks 📋Safari7/25/2012 Edge7/29/20151099
api.HTMLMediaElement.timeupdate_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.volume 📋Safari3/18/2008 Edge7/29/20152689
Safari on iOS: volume returns a value and is writable; however, the value is always 1, and setting a value has no effect on the volume of the media object.WebView on iOS: volume returns a value and is writable; however, the value is always 1, and setting a value has no effect on the volume of the media object.
api.HTMLMediaElement.volumechange_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMediaElement.waiting_event 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLMenuElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLMenuElement.compact 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLMetaElement 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLMetaElement.content 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLMetaElement.httpEquiv 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLMetaElement.name 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLMetaElement.scheme 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLModElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLModElement.cite 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLModElement.dateTime 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOListElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOListElement.compact 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOListElement.start 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOListElement.type 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.align 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.archive 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.border 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.checkValidity 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLObjectElement.code 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.codeBase 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.codeType 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.contentDocument 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.data 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.declare 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.form 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.getSVGDocument 📋Safari10/26/2007 Edge7/29/20152833
api.HTMLObjectElement.height 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.hspace 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.name 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.setCustomValidity 📋Firefox3/22/2011 Edge7/29/20151590
Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.WebView Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.
api.HTMLObjectElement.standby 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.type 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.useMap 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.validationMessage 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLObjectElement.validity 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLObjectElement.vspace 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.width 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLObjectElement.willValidate 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLOptGroupElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOptGroupElement.disabled 📋Firefox11/9/2004 Edge7/29/20153914
Safari: The property can be set, but has no effect (see bug 227042).Safari on iOS: The property can be set, but has no effect (see bug 227042).WebView on iOS: The property can be set, but has no effect (see bug 227042).
api.HTMLOptGroupElement.label 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOptionElement 📋Safari2/2/2004 Edge7/29/20154195
api.HTMLOptionElement.Option 📋Safari2/2/2004 Edge7/29/20154195
Internet Explorer: Before Internet Explorer 9, the outerHTML of elements lose their text when constructing with new Option().
api.HTMLOptionElement.defaultSelected 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOptionElement.disabled 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOptionElement.form 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOptionElement.index 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOptionElement.label 📋Safari10/26/2007 Edge7/29/20152833
Firefox: Before Firefox 7 the label property incorrectly returned an empty string if not defined instead of returning the element's text content.Firefox for Android: Before Firefox for Android 7 the label property incorrectly returned an empty string if not defined instead of returning the element's text content.
api.HTMLOptionElement.selected 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOptionElement.text 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOptionElement.value 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOptionsCollection 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOptionsCollection.add 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOptionsCollection.length 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLOptionsCollection.remove 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLOptionsCollection.selectedIndex 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLParagraphElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLParagraphElement.align 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLParamElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLParamElement.name 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLParamElement.type 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLParamElement.value 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLParamElement.valueType 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLPreElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLPreElement.width 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLProgressElement 📋Firefox8/16/2011 Edge7/29/20151443
api.HTMLProgressElement.max 📋Firefox8/16/2011 Edge7/29/20151443
api.HTMLProgressElement.position 📋Firefox8/16/2011 Edge7/29/20151443
api.HTMLProgressElement.value 📋Firefox8/16/2011 Edge7/29/20151443
api.HTMLQuoteElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLQuoteElement.cite 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLScriptElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLScriptElement.async 📋Firefox1/21/2010 Edge7/29/20152015
api.HTMLScriptElement.charset 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLScriptElement.defer 📋Safari10/26/2007 Edge7/29/20152833
Internet Explorer: Before Internet Explorer 10, it implemented defer by a proprietary specification. Since version 10 it conforms to the W3C specification.
api.HTMLScriptElement.event 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLScriptElement.htmlFor 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLScriptElement.src 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLScriptElement.text 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLScriptElement.textContent 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLScriptElement.type 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement 📋Safari6/23/2003 Edge7/29/20154419
Firefox: You should watch for change events on <select> instead of watching <option> elements for events. See bug 1090602 and Multiprocess Firefox Web content compatibility for details.
api.HTMLSelectElement.add 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement.checkValidity 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLSelectElement.disabled 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement.form 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement.item 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement.length 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement.multiple 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement.name 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement.namedItem 📋Firefox11/9/2004 Edge7/29/20153914
Edge: namedItem does not appear to take the name attribute into account (only the id attribute) on Internet Explorer and Edge. There is a bug report to Microsoft about this.Internet Explorer: namedItem does not appear to take the name attribute into account (only the id attribute) on Internet Explorer and Edge. There is a bug report to Microsoft about this.
api.HTMLSelectElement.options 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement.remove 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement.required 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLSelectElement.selectedIndex 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement.selectedOptions 📋Safari7/25/2012 Edge7/29/20151099
api.HTMLSelectElement.setCustomValidity 📋Safari6/7/2010 Edge7/29/20151878
Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.WebView Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.
api.HTMLSelectElement.size 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement.type 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement.validationMessage 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLSelectElement.validity 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLSelectElement.value 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLSelectElement.willValidate 📋Safari6/8/2009 Edge7/29/20152242
api.HTMLSourceElement 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLSourceElement.media 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLSourceElement.src 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLSourceElement.type 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLSpanElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLStyleElement 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLStyleElement.media 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLStyleElement.sheet 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLStyleElement.type 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLTableCaptionElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCaptionElement.align 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.abbr 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.align 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.axis 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.bgColor 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.cellIndex 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.ch 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.chOff 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.colSpan 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.headers 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.height 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.noWrap 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.rowSpan 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.scope 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.vAlign 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableCellElement.width 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableColElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableColElement.align 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableColElement.ch 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableColElement.chOff 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableColElement.span 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableColElement.vAlign 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableColElement.width 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.align 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.bgColor 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.border 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.caption 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.cellPadding 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.cellSpacing 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.createCaption 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.createTBody 📋Safari7/25/2012 Edge7/29/20151099
api.HTMLTableElement.createTFoot 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.createTHead 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.deleteCaption 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.deleteRow 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.deleteTFoot 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.deleteTHead 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.frame 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.insertRow 📋Firefox11/9/2004 Edge7/29/20153914
Firefox: Starting with Firefox 20, the index parameter has been made optional and defaults to -1 as per HTML specification.Firefox for Android: Starting with Firefox for Android 20, the index parameter has been made optional and defaults to -1 as per HTML specification.
api.HTMLTableElement.rows 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.rules 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.summary 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.tBodies 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.tFoot 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.tHead 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableElement.width 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableRowElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableRowElement.align 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableRowElement.bgColor 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableRowElement.cells 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableRowElement.ch 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableRowElement.chOff 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableRowElement.deleteCell 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableRowElement.insertCell 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableRowElement.insertCell.index_parameter_negative_one Safari10/26/2007 Edge7/29/20152833
api.HTMLTableRowElement.insertCell.index_parameter_optional Safari10/26/2007 Edge7/29/20152833
api.HTMLTableRowElement.rowIndex 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableRowElement.sectionRowIndex 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableRowElement.vAlign 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableSectionElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableSectionElement.align 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableSectionElement.ch 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableSectionElement.chOff 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableSectionElement.deleteRow 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableSectionElement.insertRow 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableSectionElement.rows 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTableSectionElement.vAlign 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTextAreaElement 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLTextAreaElement.checkValidity 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLTextAreaElement.cols 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLTextAreaElement.defaultValue 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLTextAreaElement.disabled 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLTextAreaElement.form 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLTextAreaElement.maxLength 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLTextAreaElement.name 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLTextAreaElement.placeholder 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLTextAreaElement.readOnly 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLTextAreaElement.required 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLTextAreaElement.rows 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLTextAreaElement.select 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLTextAreaElement.select_event 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLTextAreaElement.selectionEnd 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTextAreaElement.selectionStart 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTextAreaElement.setCustomValidity 📋Safari6/7/2010 Edge7/29/20151878
Chrome: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Chrome Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Quest Browser: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.Samsung Internet: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.WebView Android: This method only updates the validation error popup, not the tooltip that appears when hovering the mouse over the element, see bug 41380670.
api.HTMLTextAreaElement.setSelectionRange 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTextAreaElement.type 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLTextAreaElement.validationMessage 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLTextAreaElement.validity 📋Safari6/7/2010 Edge7/29/20151878
api.HTMLTextAreaElement.value 📋Safari6/23/2003 Edge7/29/20154419
api.HTMLTextAreaElement.willValidate 📋Safari6/8/2009 Edge7/29/20152242
api.HTMLTextAreaElement.wrap 📋Firefox3/22/2011 Edge7/29/20151590
api.HTMLTitleElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTitleElement.text 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLTrackElement 📋Safari7/25/2012 Edge7/29/20151099
Firefox: Before Firefox 50, text tracks would only load if the <track> element is in a document.Firefox for Android: Before Firefox for Android 50, text tracks would only load if the <track> element is in a document.
api.HTMLTrackElement.default 📋Safari7/25/2012 Edge7/29/20151099
api.HTMLTrackElement.kind 📋Safari7/25/2012 Edge7/29/20151099
api.HTMLTrackElement.label 📋Safari7/25/2012 Edge7/29/20151099
api.HTMLTrackElement.readyState 📋Safari7/25/2012 Edge7/29/20151099
api.HTMLTrackElement.src 📋Safari7/25/2012 Edge7/29/20151099
Firefox: Before Firefox 50, setting the src property did not work properly.Firefox for Android: Before Firefox for Android 50, setting the src property did not work properly.
api.HTMLTrackElement.srclang 📋Safari7/25/2012 Edge7/29/20151099
api.HTMLTrackElement.track 📋Safari7/25/2012 Edge7/29/20151099
api.HTMLUListElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLUListElement.compact 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLUListElement.type 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLUnknownElement 📋Firefox11/9/2004 Edge7/29/20153914
api.HTMLVideoElement 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLVideoElement.height 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLVideoElement.poster 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLVideoElement.videoHeight 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLVideoElement.videoWidth 📋Safari3/18/2008 Edge7/29/20152689
api.HTMLVideoElement.width 📋Safari3/18/2008 Edge7/29/20152689
api.HashChangeEvent 📋Firefox1/21/2010 Edge7/29/20152015
api.HashChangeEvent.HashChangeEvent 📋Firefox3/13/2012 Edge7/29/20151233
api.HashChangeEvent.newURL 📋Safari7/20/2011 Edge7/29/20151470
api.HashChangeEvent.oldURL 📋Safari7/20/2011 Edge7/29/20151470
api.History 📋Safari6/23/2003 Edge7/29/20154419
api.History.back 📋Safari6/23/2003 Edge7/29/20154419
api.History.forward 📋Safari6/23/2003 Edge7/29/20154419
api.History.go 📋Safari6/23/2003 Edge7/29/20154419
api.History.length 📋Safari6/23/2003 Edge7/29/20154419
api.History.pushState 📋Safari6/7/2010 Edge7/29/20151878
Firefox: Until Firefox 5, the passed object is serialized using JSON. Starting in Firefox 6, the object is serialized using the structured clone algorithm. This allows a wider variety of objects to be safely passed.Firefox for Android: Until Firefox for Android 5, the passed object is serialized using JSON. Starting in Firefox for Android 6, the object is serialized using the structured clone algorithm. This allows a wider variety of objects to be safely passed.
api.History.replaceState 📋Safari6/7/2010 Edge7/29/20151878
Firefox: Until Firefox 5, the passed object is serialized using JSON. Starting in Firefox 6, the object is serialized using the structured clone algorithm. This allows a wider variety of objects to be safely passed.Firefox for Android: Until Firefox for Android 5, the passed object is serialized using JSON. Starting in Firefox for Android 6, the object is serialized using the structured clone algorithm. This allows a wider variety of objects to be safely passed.
api.History.state 📋Firefox3/22/2011 Edge7/29/20151590
api.IDBCursor 📋Firefox10/9/2012 Edge7/29/20151023
api.IDBCursor.advance 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBCursor.continue 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBCursor.delete 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBCursor.direction 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBCursor.key 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBCursor.primaryKey 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBCursor.source 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBCursor.update 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBCursorWithValue 📋Firefox10/9/2012 Edge7/29/20151023
api.IDBCursorWithValue.value 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBDatabase 📋Firefox10/9/2012 Edge7/29/20151023
api.IDBDatabase.abort_event 📋Firefox1/31/2012 Edge7/29/20151275
Internet Explorer: Unknown limitations
api.IDBDatabase.close 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBDatabase.createObjectStore 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBDatabase.deleteObjectStore 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBDatabase.name 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBDatabase.objectStoreNames 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBDatabase.transaction 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBDatabase.version 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBDatabase.versionchange_event 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBFactory 📋Firefox10/9/2012 Edge7/29/20151023
api.IDBFactory.cmp 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBFactory.deleteDatabase 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBIndex 📋Firefox10/9/2012 Edge7/29/20151023
api.IDBIndex.count 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBIndex.get 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBIndex.getKey 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBIndex.keyPath 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBIndex.multiEntry 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBIndex.name 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBIndex.objectStore 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBIndex.openCursor 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBIndex.openKeyCursor 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBIndex.unique 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBKeyRange 📋Firefox10/9/2012 Edge7/29/20151023
api.IDBKeyRange.bound_static 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBKeyRange.lower 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBKeyRange.lowerBound_static 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBKeyRange.lowerOpen 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBKeyRange.only_static 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBKeyRange.upper 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBKeyRange.upperBound_static 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBKeyRange.upperOpen 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore 📋Firefox10/9/2012 Edge7/29/20151023
api.IDBObjectStore.add 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore.clear 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore.count 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore.createIndex 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore.delete 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore.deleteIndex 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore.get 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore.index 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore.indexNames 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore.keyPath 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore.name 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore.openCursor 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore.put 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBObjectStore.transaction 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBOpenDBRequest 📋Firefox10/9/2012 Edge7/29/20151023
api.IDBOpenDBRequest.blocked_event 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBOpenDBRequest.upgradeneeded_event 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBRequest 📋Firefox10/9/2012 Edge7/29/20151023
api.IDBRequest.error 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBRequest.error_event 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBRequest.readyState 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBRequest.result 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBRequest.source 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBRequest.success_event 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBRequest.transaction 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBTransaction 📋Firefox10/9/2012 Edge7/29/20151023
api.IDBTransaction.abort 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBTransaction.abort_event 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBTransaction.complete_event 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBTransaction.db 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBTransaction.error 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBTransaction.error_event 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBTransaction.mode 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBTransaction.objectStore 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBVersionChangeEvent 📋Firefox10/9/2012 Edge7/29/20151023
api.IDBVersionChangeEvent.newVersion 📋Firefox1/31/2012 Edge7/29/20151275
api.IDBVersionChangeEvent.oldVersion 📋Firefox1/31/2012 Edge7/29/20151275
api.ImageData 📋Safari3/18/2008 Edge7/29/20152689
api.ImageData.data 📋Safari3/18/2008 Edge7/29/20152689
api.ImageData.height 📋Safari3/18/2008 Edge7/29/20152689
api.ImageData.width 📋Safari3/18/2008 Edge7/29/20152689
api.KeyboardEvent 📋Safari2/2/2004 Edge7/29/20154195
api.KeyboardEvent.KeyboardEvent 📋Safari10/22/2013 Edge7/29/2015645
api.KeyboardEvent.altKey 📋Safari2/2/2004 Edge7/29/20154195
api.KeyboardEvent.charCode 📋Safari2/2/2004 Edge7/29/20154195
api.KeyboardEvent.ctrlKey 📋Safari2/2/2004 Edge7/29/20154195
api.KeyboardEvent.keyCode 📋Safari2/2/2004 Edge7/29/20154195
Chrome: When selecting an autocomplete suggestion, a keydown event fires where the event's keyCode property is undefined. See bug 41425904.Chrome Android: When selecting an autocomplete suggestion, a keydown event fires where the event's keyCode property is undefined. See bug 41425904.Quest Browser: When selecting an autocomplete suggestion, a keydown event fires where the event's keyCode property is undefined. See bug 41425904.Samsung Internet: When selecting an autocomplete suggestion, a keydown event fires where the event's keyCode property is undefined. See bug 41425904.WebView Android: When selecting an autocomplete suggestion, a keydown event fires where the event's keyCode property is undefined. See bug 41425904.
api.KeyboardEvent.location 📋Firefox8/28/2012 Edge7/29/20151065
api.KeyboardEvent.metaKey 📋Safari2/2/2004 Edge7/29/20154195
Firefox: Since Firefox 48, the Windows key is no longer treated as a meta key.Firefox for Android: Since Firefox for Android 48, the Windows key is no longer treated as a meta key.
api.KeyboardEvent.shiftKey 📋Safari2/2/2004 Edge7/29/20154195
api.Location 📋Safari6/23/2003 Edge7/29/20154419
api.Location.assign 📋Firefox11/9/2004 Edge7/29/20153914
Deno: This method exists but has no effect in Deno. A location can be assigned using the --location runtime flag.
api.Location.hash 📋Safari6/23/2003 Edge7/29/20154419
api.Location.host 📋Safari6/23/2003 Edge7/29/20154419
api.Location.hostname 📋Safari6/23/2003 Edge7/29/20154419
api.Location.href 📋Safari6/23/2003 Edge7/29/20154419
api.Location.origin 📋Safari7/20/2011 Edge7/29/20151470
Firefox: Before Firefox 49, results for URL using the blob scheme incorrectly returned null.Firefox for Android: Before Firefox for Android 49, results for URL using the blob scheme incorrectly returned null.Internet Explorer: Intranet sites are set to Compatibility View, which will emulate IE7 and omit window.location.origin.
api.Location.pathname 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 53, the pathname property returned wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return "/x?a=true&b=false" rather than "/x".Firefox for Android: Before Firefox for Android 53, the pathname property returned wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, pathname would return "/x?a=true&b=false" rather than "/x".Internet Explorer: Internet Explorer does not provide the leading slash character in the pathname (docs/Web/API/Location instead of /docs/Web/API/Location).
api.Location.port 📋Safari6/23/2003 Edge7/29/20154419
api.Location.protocol 📋Safari6/23/2003 Edge7/29/20154419
api.Location.reload 📋Safari6/23/2003 Edge7/29/20154419
Deno: This method exists but has no effect in Deno.Edge: Before Edge 79, if a page added to Trusted Sites contains a cross-origin iframe, then calling reload() from within the iframe reloads the trusted page (in other words, the top page reloads, not the iframe).Internet Explorer: If a page added to Trusted Sites contains a cross-origin iframe, then calling reload() from within the iframe reloads the trusted page (in other words, the top page reloads, not the iframe).
api.Location.replace 📋Safari6/23/2003 Edge7/29/20154419
Deno: This method exists but has no effect in Deno. A location can be assigned using the --location runtime flag.
api.Location.search 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 53, the search property returned wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, search would return "", rather than "?a=true&b=false".Firefox for Android: Before Firefox for Android 53, the search property returned wrong parts of the URL. For example, for a URL of https://z.com/x?a=true&b=false, search would return "", rather than "?a=true&b=false".
api.Location.toString 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: Intranet sites are set to Compatibility View, which will emulate IE7 and omit window.location.toString.
api.MediaElementAudioSourceNode 📋Safari7/25/2012 Edge7/29/20151099
api.MediaError 📋Safari3/18/2008 Edge7/29/20152689
api.MediaError.code 📋Safari3/18/2008 Edge7/29/20152689
api.MediaList 📋Safari6/23/2003 Edge7/29/20154419
api.MediaList.appendMedium 📋Safari6/23/2003 Edge7/29/20154419
api.MediaList.deleteMedium 📋Safari6/23/2003 Edge7/29/20154419
api.MediaList.item 📋Safari6/23/2003 Edge7/29/20154419
api.MediaList.length 📋Safari6/23/2003 Edge7/29/20154419
api.MediaList.mediaText 📋Safari6/23/2003 Edge7/29/20154419
api.MediaList.toString 📋Safari6/23/2003 Edge7/29/20154419
api.MediaQueryList 📋Safari7/20/2011 Edge7/29/20151470
api.MediaQueryList.addListener 📋Safari7/20/2011 Edge7/29/20151470
api.MediaQueryList.matches 📋Safari7/20/2011 Edge7/29/20151470
api.MediaQueryList.media 📋Safari7/20/2011 Edge7/29/20151470
api.MediaQueryList.removeListener 📋Safari7/20/2011 Edge7/29/20151470
api.MessageEvent 📋Firefox6/17/2008 Edge7/29/20152598
api.MessageEvent.data 📋Firefox6/17/2008 Edge7/29/20152598
api.MessageEvent.initMessageEvent 📋Firefox6/17/2008 Edge7/29/20152598
api.MessageEvent.origin 📋Firefox6/17/2008 Edge7/29/20152598
api.MessageEvent.ports 📋Firefox6/17/2008 Edge7/29/20152598
api.MessageEvent.source 📋Firefox6/17/2008 Edge7/29/20152598
api.MimeType 📋Safari6/23/2003 Edge7/29/20154419
api.MimeType.description 📋Safari6/23/2003 Edge7/29/20154419
api.MimeType.enabledPlugin 📋Safari6/23/2003 Edge7/29/20154419
api.MimeType.suffixes 📋Safari6/23/2003 Edge7/29/20154419
api.MimeType.type 📋Safari6/23/2003 Edge7/29/20154419
api.MimeTypeArray 📋Safari6/23/2003 Edge7/29/20154419
api.MimeTypeArray.item 📋Firefox11/9/2004 Edge7/29/20153914
Chrome: Before version 59, method parameters were optionalChrome Android: Before version 59, method parameters were optionalQuest Browser: Before version 5.0, method parameters were optionalSamsung Internet: Before Samsung Internet 7.0, method parameters were optionalWebView Android: Before version 59, method parameters were optional
api.MimeTypeArray.length 📋Safari6/23/2003 Edge7/29/20154419
api.MimeTypeArray.namedItem 📋Firefox11/9/2004 Edge7/29/20153914
Chrome: Before version 59, method parameters were optionalChrome Android: Before version 59, method parameters were optionalQuest Browser: Before version 5.0, method parameters were optionalSamsung Internet: Before Samsung Internet 7.0, method parameters were optionalWebView Android: Before version 59, method parameters were optional
api.MouseEvent 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.MouseEvent 📋Firefox3/13/2012 Edge7/29/20151233
api.MouseEvent.altKey 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.button 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.clientX 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.clientY 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.ctrlKey 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.initMouseEvent 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.layerX Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.layerY Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.metaKey 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.offsetX 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.offsetY 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.pageX 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.pageY 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.relatedTarget 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.screenX 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.screenY 📋Safari6/23/2003 Edge7/29/20154419
api.MouseEvent.shiftKey 📋Safari6/23/2003 Edge7/29/20154419
api.MutationObserver 📋Firefox7/17/2012 Edge7/29/20151107
api.MutationObserver.MutationObserver 📋Firefox7/17/2012 Edge7/29/20151107
api.MutationObserver.disconnect 📋Firefox7/17/2012 Edge7/29/20151107
api.MutationObserver.observe 📋Firefox7/17/2012 Edge7/29/20151107
Chrome: Before Chrome 33, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Chrome throws a syntax error.Chrome Android: Before Chrome Android 33, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Chrome Android throws a syntax error.Edge: Before Edge 79, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Edge throws a syntax error.Firefox: Before Firefox 36, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Firefox throws a syntax error.Firefox for Android: Before Firefox for Android 36, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Firefox for Android throws a syntax error.Internet Explorer: Internet Explorer requires attributes: true when using attributeFilter or attributeOldValue. If attributes: true is not present, then Internet Explorer throws a syntax error.Quest Browser: Before Quest Browser 5.0, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Quest Browser throws a syntax error.Opera: Before Opera 20, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Opera throws a syntax error.Opera Android: Before Opera Android 20, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Opera Android throws a syntax error.Safari: Before Safari 10.1, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Safari throws a syntax error.Safari on iOS: Before Safari iOS 10.3, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Safari throws a syntax error.Samsung Internet: Before Samsung Internet 2.0, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Samsung Internet throws a syntax error.WebView Android: Before WebView 4.4.3, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then WebView throws a syntax error.WebView on iOS: Before Safari iOS 10.3, attributes: true is required when using attributeFilter or attributeOldValue. If attributes: true is not present, then Safari throws a syntax error.
api.MutationObserver.takeRecords 📋Firefox7/17/2012 Edge7/29/20151107
api.MutationRecord 📋Firefox7/17/2012 Edge7/29/20151107
api.MutationRecord.addedNodes 📋Firefox7/17/2012 Edge7/29/20151107
api.MutationRecord.attributeName 📋Firefox7/17/2012 Edge7/29/20151107
api.MutationRecord.attributeNamespace 📋Firefox7/17/2012 Edge7/29/20151107
api.MutationRecord.nextSibling 📋Firefox7/17/2012 Edge7/29/20151107
api.MutationRecord.oldValue 📋Firefox7/17/2012 Edge7/29/20151107
api.MutationRecord.previousSibling 📋Firefox7/17/2012 Edge7/29/20151107
api.MutationRecord.removedNodes 📋Firefox7/17/2012 Edge7/29/20151107
api.MutationRecord.target 📋Firefox7/17/2012 Edge7/29/20151107
api.MutationRecord.type 📋Firefox7/17/2012 Edge7/29/20151107
api.NamedNodeMap 📋Safari6/23/2003 Edge7/29/20154419
api.NamedNodeMap.getNamedItem 📋Safari6/23/2003 Edge7/29/20154419
api.NamedNodeMap.getNamedItemNS 📋Safari6/23/2003 Edge7/29/20154419
api.NamedNodeMap.item 📋Safari6/23/2003 Edge7/29/20154419
api.NamedNodeMap.length 📋Safari6/23/2003 Edge7/29/20154419
api.NamedNodeMap.removeNamedItem 📋Safari6/23/2003 Edge7/29/20154419
api.NamedNodeMap.removeNamedItemNS 📋Safari6/23/2003 Edge7/29/20154419
api.NamedNodeMap.setNamedItem 📋Safari6/23/2003 Edge7/29/20154419
api.NamedNodeMap.setNamedItemNS 📋Safari6/23/2003 Edge7/29/20154419
api.Navigator 📋Safari6/23/2003 Edge7/29/20154419
api.Navigator.appCodeName 📋Safari6/23/2003 Edge7/29/20154419
api.Navigator.appName 📋Safari6/23/2003 Edge7/29/20154419
api.Navigator.appVersion 📋Safari6/23/2003 Edge7/29/20154419
api.Navigator.geolocation 📋Firefox6/30/2009 Edge7/29/20152220
api.Navigator.javaEnabled 📋Safari6/23/2003 Edge7/29/20154419
api.Navigator.language 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 4, this property's value was also part of the user agent string, as reported by navigator.userAgent. Starting in Firefox 5, this property's value is based on the value of the Accept-Language HTTP header.Internet Explorer: Closest available (non-standard) properties are userLanguage and browserLanguage.
api.Navigator.mimeTypes 📋Safari6/23/2003 Edge7/29/20154419
api.Navigator.onLine 📋Firefox11/29/2005 Edge7/29/20153529
Chrome: Earlier versions of Chrome incorrectly return true when a tab is first opened, but it starts reporting the correct connectivity status after the first network event. Windows: 11, macOS: 14, ChromeOS: 13, Linux: Always returns true. For history, see bug 40530968.Firefox: Since Firefox 4 the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity. Since Firefox 41, on OS X and Windows, the returned values follow the actual network connectivity, unless 'Work offline' mode is selected (where it will always return false).Internet Explorer: in Internet Explorer 8 'online' and 'offline' events are raised on the document.body; under IE 9 they are raised on both document.body and window.Opera: From Opera 11.1 until Opera 12.1, the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity.Opera Android: From Opera 11.1 until Opera 12.1, the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity.WebView Android: Can incorrectly return true, see bug 41369933.
api.Navigator.platform 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 69, platform would report running on a 32-bit CPU if running the 32-bit version of Firefox on a 64-bit system.Firefox: You can override the value returned by platform by setting the preference general.platform.override to the string you wish to be returned instead.
api.Navigator.plugins 📋Safari6/23/2003 Edge7/29/20154419
api.Navigator.product 📋Safari6/23/2003 Edge7/29/20154419
api.Navigator.productSub 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Always returns 20030107.Chrome Android: Always returns 20030107.Edge: Always returns 20030107.Quest Browser: Always returns 20030107.Opera: Always returns 20030107.Opera Android: Always returns 20030107.Safari: Always returns 20030107.Safari on iOS: Always returns 20030107.Samsung Internet: Always returns 20030107.WebView Android: Always returns 20030107.WebView on iOS: Always returns 20030107.
api.Navigator.userAgent 📋Safari6/23/2003 Edge7/29/20154419
api.Navigator.vendor 📋Safari6/23/2003 Edge7/29/20154419
api.Navigator.vendorSub 📋Firefox11/9/2004 Edge7/29/20153914
api.Node 📋Safari6/23/2003 Edge7/29/20154419
Chrome: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Chrome Android: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Quest Browser: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Opera: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Opera Android: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Safari: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Safari on iOS: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.Samsung Internet: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.WebView Android: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.WebView on iOS: WebKit and old versions of Blink incorrectly do not make Node inherit from EventTarget.
api.Node.appendChild 📋Safari10/24/2003 Edge7/29/20154296
api.Node.baseURI 📋Firefox11/9/2004 Edge7/29/20153914
api.Node.childNodes 📋Safari2/2/2004 Edge7/29/20154195
api.Node.cloneNode 📋Safari10/24/2003 Edge7/29/20154296
api.Node.compareDocumentPosition 📋Firefox11/9/2004 Edge7/29/20153914
Internet Explorer: Only supports contains for elements
api.Node.contains 📋Safari10/24/2003 Edge7/29/20154296
Internet Explorer: Only supported for HTMLElement, not all Node objects.
api.Node.firstChild 📋Safari6/23/2003 Edge7/29/20154419
api.Node.hasChildNodes 📋Safari6/23/2003 Edge7/29/20154419
api.Node.insertBefore 📋Safari10/24/2003 Edge7/29/20154296
api.Node.isDefaultNamespace 📋Firefox11/9/2004 Edge7/29/20153914
api.Node.isEqualNode 📋Firefox11/9/2004 Edge7/29/20153914
api.Node.lastChild 📋Safari6/23/2003 Edge7/29/20154419
api.Node.lookupNamespaceURI 📋Firefox11/9/2004 Edge7/29/20153914
api.Node.lookupPrefix 📋Firefox11/9/2004 Edge7/29/20153914
api.Node.nextSibling 📋Safari10/24/2003 Edge7/29/20154296
api.Node.nodeName 📋Safari6/23/2003 Edge7/29/20154419
api.Node.nodeType 📋Safari10/24/2003 Edge7/29/20154296
api.Node.nodeValue 📋Safari6/23/2003 Edge7/29/20154419
api.Node.normalize 📋Safari6/23/2003 Edge7/29/20154419
api.Node.ownerDocument 📋Safari6/23/2003 Edge7/29/20154419
Firefox: The ownerDocument of doctype nodes (that is, nodes for which Node.nodeType is Node.DOCUMENT_TYPE_NODE or 10) is null.Firefox for Android: The ownerDocument of doctype nodes (that is, nodes for which Node.nodeType is Node.DOCUMENT_TYPE_NODE or 10) is null.
api.Node.parentElement 📋Safari10/24/2003 Edge7/29/20154296
Internet Explorer: Only supported on Element.Opera: Before Opera 15, this feature was only supported on Element.Opera Android: Before Opera Android 14, this feature was only supported on Element.
api.Node.parentNode 📋Safari10/24/2003 Edge7/29/20154296
api.Node.previousSibling 📋Safari6/23/2003 Edge7/29/20154419
api.Node.removeChild 📋Safari10/24/2003 Edge7/29/20154296
api.Node.replaceChild 📋Safari10/24/2003 Edge7/29/20154296
api.Node.textContent 📋Firefox11/9/2004 Edge7/29/20153914
api.NodeIterator 📋Safari10/26/2007 Edge7/29/20152833
api.NodeIterator.detach 📋Safari10/26/2007 Edge7/29/20152833
Chrome: Since Chrome 45, this method does nothing, as specified. See bug 40362826.Chrome Android: Since Chrome Android 45, this method does nothing, as specified. See bug 40362826.Firefox: Since Firefox 22, this method does nothing, as specified. See bug 823549.Firefox for Android: Since Firefox for Android 22, this method does nothing, as specified. See bug 823549.Quest Browser: Since Quest Browser 5.0, this method does nothing, as specified. See bug 40362826.Opera: Since Opera 32, this method does nothing, as specified. See bug 40362826.Opera Android: Since Opera Android 32, this method does nothing, as specified. See bug 40362826.Safari: Since Safari 10, this method does nothing, as specified. See bug 148454.Safari on iOS: Since Safari on iOS 10, this method does nothing, as specified. See bug 148454.Samsung Internet: Since Samsung Internet 5.0, this method does nothing, as specified. See bug 40362826.WebView Android: Since WebView Android 45, this method does nothing, as specified. See bug 40362826.WebView on iOS: Since WebView on iOS 10, this method does nothing, as specified. See bug 148454.
api.NodeIterator.filter 📋Safari10/26/2007 Edge7/29/20152833
api.NodeIterator.nextNode 📋Safari10/26/2007 Edge7/29/20152833
api.NodeIterator.previousNode 📋Safari10/26/2007 Edge7/29/20152833
api.NodeIterator.root 📋Safari10/26/2007 Edge7/29/20152833
api.NodeIterator.whatToShow 📋Safari10/26/2007 Edge7/29/20152833
api.NodeList 📋Safari6/23/2003 Edge7/29/20154419
api.NodeList.item 📋Safari6/23/2003 Edge7/29/20154419
api.NodeList.length 📋Safari6/23/2003 Edge7/29/20154419
api.OES_element_index_uint 📋Firefox9/17/2013 Edge7/29/2015680
api.OES_standard_derivatives 📋Firefox1/31/2012 Edge7/29/20151275
api.OES_texture_float 📋Firefox8/16/2011 Edge7/29/20151443
api.OES_texture_float_linear 📋Firefox9/17/2013 Edge7/29/2015680
Safari on iOS: Only supported on iPadOS.WebView on iOS: Only supported on iPadOS.
api.OfflineAudioCompletionEvent 📋Safari7/25/2012 Edge7/29/20151099
api.OfflineAudioCompletionEvent.renderedBuffer 📋Safari7/25/2012 Edge7/29/20151099
api.OfflineAudioContext.complete_event 📋Safari10/22/2013 Edge7/29/2015645
api.OfflineAudioContext.startRendering 📋Safari10/22/2013 Edge7/29/2015645
api.OscillatorNode 📋Safari7/25/2012 Edge7/29/20151099
api.OscillatorNode.detune 📋Safari7/25/2012 Edge7/29/20151099
api.OscillatorNode.frequency 📋Safari7/25/2012 Edge7/29/20151099
api.OscillatorNode.setPeriodicWave 📋Firefox10/29/2013 Edge7/29/2015638
api.OscillatorNode.type 📋Safari7/25/2012 Edge7/29/20151099
api.PageTransitionEvent 📋Firefox11/29/2005 Edge7/29/20153529
api.PageTransitionEvent.persisted 📋Safari6/7/2010 Edge7/29/20151878
Internet Explorer: The persisted property is known to be buggy in Internet Explorer. It is advised to check if window.performance.navigation.type == 2 as well.
api.PannerNode 📋Safari7/25/2012 Edge7/29/20151099
api.PannerNode.coneInnerAngle 📋Safari7/25/2012 Edge7/29/20151099
api.PannerNode.coneOuterAngle 📋Safari7/25/2012 Edge7/29/20151099
api.PannerNode.coneOuterGain 📋Safari7/25/2012 Edge7/29/20151099
api.PannerNode.distanceModel 📋Safari7/25/2012 Edge7/29/20151099
api.PannerNode.maxDistance 📋Safari7/25/2012 Edge7/29/20151099
api.PannerNode.panningModel 📋Safari7/25/2012 Edge7/29/20151099
api.PannerNode.refDistance 📋Safari7/25/2012 Edge7/29/20151099
api.PannerNode.rolloffFactor 📋Safari7/25/2012 Edge7/29/20151099
api.PannerNode.setOrientation 📋Safari7/25/2012 Edge7/29/20151099
api.PannerNode.setPosition 📋Safari7/25/2012 Edge7/29/20151099
api.Performance 📋Firefox9/27/2011 Edge7/29/20151401
Node.js: Only available as an internal instance.
api.Performance.navigation 📋Firefox9/27/2011 Edge7/29/20151401
api.Performance.now 📋Firefox8/28/2012 Edge7/29/20151065
Firefox: In Firefox 57.0.4 the accuracy was reduced to 20 microseconds.Firefox: In Firefox 59 the accuracy was reduced to 2 milliseconds.Firefox: In Firefox 60 the accuracy was increased to 1 millisecond.Firefox for Android: In Firefox for Android 57.0.4 the accuracy was reduced to 20 microseconds.Firefox for Android: In Firefox for Android 59 the accuracy was reduced to 2 milliseconds.Firefox for Android: In Firefox for Android 60 the accuracy was increased to 1 millisecond.
api.Performance.timing 📋Firefox9/27/2011 Edge7/29/20151401
Node.js: Returns node specific timing object
api.PerformanceNavigation 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceNavigation.redirectCount 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceNavigation.type 📋Firefox9/27/2011 Edge7/29/20151401
Firefox: Before Firefox 70, this property could return incorrect values. See bug 1459711.Firefox for Android: Before Firefox for Android 79, this property could return incorrect values. See bug 1459711.
api.PerformanceTiming 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.connectEnd 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.connectStart 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.domComplete 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.domContentLoadedEventEnd 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.domContentLoadedEventStart 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.domInteractive 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.domLoading 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.domainLookupEnd 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.domainLookupStart 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.fetchStart 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.loadEventEnd 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.loadEventStart 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.navigationStart 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.redirectEnd 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.redirectStart 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.requestStart 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.responseEnd 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.responseStart 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.unloadEventEnd 📋Firefox9/27/2011 Edge7/29/20151401
api.PerformanceTiming.unloadEventStart 📋Firefox9/27/2011 Edge7/29/20151401
api.PeriodicWave 📋Firefox10/29/2013 Edge7/29/2015638
api.Plugin 📋Safari6/23/2003 Edge7/29/20154419
api.Plugin.description 📋Safari6/23/2003 Edge7/29/20154419
api.Plugin.filename 📋Safari6/23/2003 Edge7/29/20154419
api.Plugin.item 📋Firefox11/9/2004 Edge7/29/20153914
Chrome: Starting with version 59, method parameters are required instead of optional.Chrome Android: Starting with version 59, method parameters are required instead of optional.Quest Browser: Starting with version 5.0, method parameters are required instead of optional.Samsung Internet: Starting with Samsung Internet 7.0, method parameters are required instead of optional.WebView Android: Starting with version 59, method parameters are required instead of optional.
api.Plugin.length 📋Safari6/23/2003 Edge7/29/20154419
api.Plugin.name 📋Safari6/23/2003 Edge7/29/20154419
api.Plugin.namedItem 📋Firefox11/9/2004 Edge7/29/20153914
Chrome: Starting with version 59, method parameters are required instead of optional.Chrome Android: Starting with version 59, method parameters are required instead of optional.Quest Browser: Starting with version 5.0, method parameters are required instead of optional.Samsung Internet: Starting with Samsung Internet 7.0, method parameters are required instead of optional.WebView Android: Starting with version 59, method parameters are required instead of optional.
api.PluginArray 📋Safari6/23/2003 Edge7/29/20154419
api.PluginArray.item 📋Firefox11/9/2004 Edge7/29/20153914
Chrome: Since Chrome 59, method parameters are required instead of optional.Chrome Android: Since Chrome Android 59, method parameters are required instead of optional.Edge: Since Edge 79, method parameters are required instead of optional.Quest Browser: Since Quest Browser 5.0, method parameters are required instead of optional.Opera: Since Opera 46, method parameters are required instead of optional.Opera Android: Since Opera Android 43, method parameters are required instead of optional.Samsung Internet: Since Samsung Internet 7.0, method parameters are required instead of optional.WebView Android: Since WebView Android 59, method parameters are required instead of optional.
api.PluginArray.length 📋Safari6/23/2003 Edge7/29/20154419
api.PluginArray.namedItem 📋Firefox11/9/2004 Edge7/29/20153914
Chrome: Since Chrome 59, method parameters are required instead of optional.Chrome Android: Since Chrome Android 59, method parameters are required instead of optional.Edge: Since Edge 79, method parameters are required instead of optional.Quest Browser: Since Quest Browser 5.0, method parameters are required instead of optional.Opera: Since Opera 46, method parameters are required instead of optional.Opera Android: Since Opera Android 43, method parameters are required instead of optional.Samsung Internet: Since Samsung Internet 7.0, method parameters are required instead of optional.WebView Android: Since WebView Android 59, method parameters are required instead of optional.
api.PluginArray.refresh 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Since Chrome 59, method parameters are required instead of optional.Chrome Android: Since Chrome Android 59, method parameters are required instead of optional.Edge: Since Edge 79, method parameters are required instead of optional.Quest Browser: Since Quest Browser 5.0, method parameters are required instead of optional.Opera: Since Opera 46, method parameters are required instead of optional.Opera Android: Since Opera Android 43, method parameters are required instead of optional.Samsung Internet: Since Samsung Internet 7.0, method parameters are required instead of optional.WebView Android: Since WebView Android 59, method parameters are required instead of optional.
api.PopStateEvent 📋Firefox3/22/2011 Edge7/29/20151590
api.PopStateEvent.state 📋Firefox3/22/2011 Edge7/29/20151590
api.ProcessingInstruction 📋Safari6/23/2003 Edge7/29/20154419
api.ProcessingInstruction.target 📋Safari6/23/2003 Edge7/29/20154419
api.ProgressEvent 📋Safari3/18/2008 Edge7/29/20152689
api.ProgressEvent.lengthComputable 📋Safari3/18/2008 Edge7/29/20152689
api.ProgressEvent.loaded 📋Safari3/18/2008 Edge7/29/20152689
api.ProgressEvent.total 📋Safari3/18/2008 Edge7/29/20152689
api.RadioNodeList 📋Safari10/22/2013 Edge7/29/2015645
api.RadioNodeList.value 📋Safari10/22/2013 Edge7/29/2015645
api.Range 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Starting with Firefox 13, the Range object throws a DOMException as defined in DOM 4, instead of a RangeException defined in prior specifications.Firefox for Android: Starting with Firefox for Android 14, the Range object throws a DOMException as defined in DOM 4, instead of a RangeException defined in prior specifications.
api.Range.cloneContents 📋Safari6/23/2003 Edge7/29/20154419
api.Range.cloneRange 📋Safari6/23/2003 Edge7/29/20154419
api.Range.collapse 📋Safari6/23/2003 Edge7/29/20154419
api.Range.collapsed 📋Safari6/23/2003 Edge7/29/20154419
api.Range.commonAncestorContainer 📋Safari6/23/2003 Edge7/29/20154419
api.Range.compareBoundaryPoints 📋Safari6/23/2003 Edge7/29/20154419
api.Range.createContextualFragment 📋Safari6/23/2003 Edge7/29/20154419
api.Range.deleteContents 📋Safari6/23/2003 Edge7/29/20154419
api.Range.detach 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Since Chrome 37, this method does nothing, as specified. See bug 40362748.Chrome Android: Since Chrome Android 37, this method does nothing, as specified. See bug 40362748.Firefox: Since Firefox 15, this method does nothing, as specified. See bug 702948.Firefox for Android: Since Firefox for Android 15, this method does nothing, as specified. See bug 702948.Quest Browser: Since Quest Browser 5.0, this method does nothing, as specified. See bug 40362748.Opera: Since Opera 24, this method does nothing, as specified. See bug 40362748.Opera Android: Since Opera 24, this method does nothing, as specified. See bug 40362748.Safari: Since Safari 10, this method does nothing, see bug 148454.Safari on iOS: Since Safari on iOS 10, this method does nothing, see bug 148454.Samsung Internet: Since Samsung Internet 3.0, this method does nothing, as specified. See bug 40362748.WebView Android: Since WebView Android 37, this method does nothing, as specified. See bug 40362748.WebView on iOS: Since WebView on iOS 10, this method does nothing, see bug 148454.
api.Range.endContainer 📋Safari6/23/2003 Edge7/29/20154419
api.Range.endOffset 📋Safari6/23/2003 Edge7/29/20154419
api.Range.extractContents 📋Safari6/23/2003 Edge7/29/20154419
api.Range.getBoundingClientRect 📋Safari6/7/2010 Edge7/29/20151878
api.Range.getClientRects 📋Safari6/7/2010 Edge7/29/20151878
api.Range.insertNode 📋Safari6/23/2003 Edge7/29/20154419
api.Range.selectNode 📋Safari6/23/2003 Edge7/29/20154419
api.Range.selectNodeContents 📋Safari6/23/2003 Edge7/29/20154419
api.Range.setEnd 📋Safari6/23/2003 Edge7/29/20154419
api.Range.setEndAfter 📋Safari6/23/2003 Edge7/29/20154419
api.Range.setEndBefore 📋Safari6/23/2003 Edge7/29/20154419
api.Range.setStart 📋Safari6/23/2003 Edge7/29/20154419
api.Range.setStartAfter 📋Safari6/23/2003 Edge7/29/20154419
api.Range.setStartBefore 📋Safari6/23/2003 Edge7/29/20154419
api.Range.startContainer 📋Safari6/23/2003 Edge7/29/20154419
api.Range.startOffset 📋Safari6/23/2003 Edge7/29/20154419
api.Range.surroundContents 📋Safari6/23/2003 Edge7/29/20154419
api.Range.toString 📋Safari6/23/2003 Edge7/29/20154419
api.SVGAElement 📋Safari10/26/2007 Edge7/29/20152833
api.SVGAElement.href 📋Safari10/26/2007 Edge7/29/20152833
api.SVGAElement.target 📋Safari10/26/2007 Edge7/29/20152833
api.SVGAngle 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAngle.convertToSpecifiedUnits 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAngle.newValueSpecifiedUnits 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAngle.unitType 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAngle.value 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAngle.valueAsString 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAngle.valueInSpecifiedUnits 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedAngle 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedAngle.animVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedAngle.baseVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedBoolean 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGAnimatedBoolean.animVal 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGAnimatedBoolean.baseVal 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGAnimatedEnumeration 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedEnumeration.animVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedEnumeration.baseVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedInteger 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGAnimatedInteger.animVal 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGAnimatedInteger.baseVal 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGAnimatedLength 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedLength.animVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedLength.baseVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedLengthList 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedLengthList.animVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedLengthList.baseVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedNumber 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedNumber.animVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedNumber.baseVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedNumberList 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedNumberList.animVal 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGAnimatedNumberList.baseVal 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGAnimatedPreserveAspectRatio 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedPreserveAspectRatio.animVal 📋Safari7/25/2012 Edge7/29/20151099
api.SVGAnimatedPreserveAspectRatio.baseVal 📋Safari7/25/2012 Edge7/29/20151099
api.SVGAnimatedRect 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedRect.animVal 📋Safari10/26/2007 Edge7/29/20152833
api.SVGAnimatedRect.baseVal 📋Safari10/26/2007 Edge7/29/20152833
api.SVGAnimatedString 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedString.animVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedString.baseVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedTransformList 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedTransformList.animVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGAnimatedTransformList.baseVal 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGCircleElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGCircleElement.cx 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGCircleElement.cy 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGCircleElement.r 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGClipPathElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGClipPathElement.clipPathUnits 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGClipPathElement.transform 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGComponentTransferFunctionElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGComponentTransferFunctionElement.amplitude 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGComponentTransferFunctionElement.exponent 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGComponentTransferFunctionElement.intercept 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGComponentTransferFunctionElement.offset 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGComponentTransferFunctionElement.slope 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGComponentTransferFunctionElement.tableValues 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGComponentTransferFunctionElement.type 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGDefsElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGDescElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGElement.className 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGElement.error_event 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGElement.load_event 📋Safari10/26/2007 Edge7/29/20152833
Firefox: See bug 620002 for implementation status of the standard load event.Firefox for Android: See bug 620002 for implementation status of the standard load event.
api.SVGElement.ownerSVGElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGElement.style 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGElement.viewportElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGEllipseElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGEllipseElement.cx 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGEllipseElement.cy 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGEllipseElement.rx 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGEllipseElement.ry 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGFEBlendElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEBlendElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEBlendElement.in1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEBlendElement.in2 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEBlendElement.mode 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEBlendElement.result 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEBlendElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEBlendElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEBlendElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEColorMatrixElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEColorMatrixElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEColorMatrixElement.in1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEColorMatrixElement.result 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEColorMatrixElement.type 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEColorMatrixElement.values 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEColorMatrixElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEColorMatrixElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEColorMatrixElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEComponentTransferElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEComponentTransferElement.height 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEComponentTransferElement.in1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEComponentTransferElement.result 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEComponentTransferElement.width 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEComponentTransferElement.x 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEComponentTransferElement.y 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFECompositeElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFECompositeElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFECompositeElement.in1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFECompositeElement.in2 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFECompositeElement.k1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFECompositeElement.k2 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFECompositeElement.k3 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFECompositeElement.k4 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFECompositeElement.operator 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFECompositeElement.result 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFECompositeElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFECompositeElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFECompositeElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.bias 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.divisor 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.edgeMode 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.in1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.kernelMatrix 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.kernelUnitLengthX 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.kernelUnitLengthY 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.orderX 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.orderY 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.preserveAlpha 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.result 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.targetX 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.targetY 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEConvolveMatrixElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDiffuseLightingElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDiffuseLightingElement.diffuseConstant 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDiffuseLightingElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDiffuseLightingElement.in1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDiffuseLightingElement.kernelUnitLengthX 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDiffuseLightingElement.kernelUnitLengthY 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDiffuseLightingElement.result 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDiffuseLightingElement.surfaceScale 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDiffuseLightingElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDiffuseLightingElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDiffuseLightingElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDisplacementMapElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDisplacementMapElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDisplacementMapElement.in1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDisplacementMapElement.in2 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDisplacementMapElement.result 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDisplacementMapElement.scale 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDisplacementMapElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDisplacementMapElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDisplacementMapElement.xChannelSelector 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDisplacementMapElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDisplacementMapElement.yChannelSelector 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDistantLightElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDistantLightElement.azimuth 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEDistantLightElement.elevation 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEFloodElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEFloodElement.height 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEFloodElement.result 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEFloodElement.width 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEFloodElement.x 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEFloodElement.y 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEFuncAElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEFuncBElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEFuncGElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEFuncRElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEGaussianBlurElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEGaussianBlurElement.height 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEGaussianBlurElement.in1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEGaussianBlurElement.result 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEGaussianBlurElement.setStdDeviation 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEGaussianBlurElement.stdDeviationX 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEGaussianBlurElement.stdDeviationY 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEGaussianBlurElement.width 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEGaussianBlurElement.x 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEGaussianBlurElement.y 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEImageElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEImageElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEImageElement.href 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEImageElement.preserveAspectRatio 📋Safari7/25/2012 Edge7/29/20151099
api.SVGFEImageElement.result 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEImageElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEImageElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEImageElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMergeElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMergeElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMergeElement.result 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMergeElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMergeElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMergeElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMergeNodeElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMergeNodeElement.in1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMorphologyElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMorphologyElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMorphologyElement.in1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMorphologyElement.operator 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMorphologyElement.radiusX 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMorphologyElement.radiusY 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMorphologyElement.result 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMorphologyElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMorphologyElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEMorphologyElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEOffsetElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEOffsetElement.dx 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEOffsetElement.dy 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEOffsetElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEOffsetElement.in1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEOffsetElement.result 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEOffsetElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEOffsetElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEOffsetElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEPointLightElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEPointLightElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEPointLightElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFEPointLightElement.z 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpecularLightingElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpecularLightingElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpecularLightingElement.in1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpecularLightingElement.result 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpecularLightingElement.specularConstant 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpecularLightingElement.specularExponent 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpecularLightingElement.surfaceScale 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpecularLightingElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpecularLightingElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpecularLightingElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpotLightElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpotLightElement.limitingConeAngle 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpotLightElement.pointsAtX 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpotLightElement.pointsAtY 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpotLightElement.pointsAtZ 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpotLightElement.specularExponent 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpotLightElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpotLightElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFESpotLightElement.z 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETileElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETileElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETileElement.in1 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETileElement.result 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETileElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETileElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETileElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETurbulenceElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETurbulenceElement.baseFrequencyX 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETurbulenceElement.baseFrequencyY 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETurbulenceElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETurbulenceElement.numOctaves 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETurbulenceElement.result 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETurbulenceElement.seed 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETurbulenceElement.stitchTiles 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETurbulenceElement.type 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETurbulenceElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETurbulenceElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFETurbulenceElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFilterElement 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFilterElement.filterUnits 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFilterElement.height 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFilterElement.href 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFilterElement.primitiveUnits 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFilterElement.width 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFilterElement.x 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGFilterElement.y 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGForeignObjectElement 📋Safari10/26/2007 Edge7/29/20152833
api.SVGForeignObjectElement.height 📋Safari3/18/2008 Edge7/29/20152689
api.SVGForeignObjectElement.width 📋Safari3/18/2008 Edge7/29/20152689
api.SVGForeignObjectElement.x 📋Safari3/18/2008 Edge7/29/20152689
api.SVGForeignObjectElement.y 📋Safari3/18/2008 Edge7/29/20152689
api.SVGGElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGGradientElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGGradientElement.gradientTransform 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGGradientElement.gradientUnits 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGGradientElement.href 📋Firefox10/24/2006 Edge7/29/20153200
api.SVGGradientElement.spreadMethod 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGGraphicsElement 📋Firefox4/2/2013 Edge7/29/2015848
Chrome: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Chrome Android: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Firefox: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Firefox for Android: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Internet Explorer: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Opera: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Opera Android: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Safari: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Safari on iOS: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.Samsung Internet: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.WebView Android: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.WebView on iOS: The SVGGraphicsElement interface itself is not present, but some of its members are available on interfaces that inherit from SVGGraphicsElement.
api.SVGGraphicsElement.getBBox 📋Firefox11/29/2005 Edge7/29/20153529
Firefox: Before Firefox 128, the getBBox() method returned an empty DOMRect when there is no fill (bug 1019326).Firefox: Before Firefox 68, this method didn't work for <textPath> and <tspan> elements (bug 937268).Firefox for Android: Before Firefox for Android 128, the getBBox() method returned an empty DOMRect when there is no fill (bug 1019326).Firefox for Android: Before Firefox for Android 68, this method didn't work for <textPath> and <tspan> elements (bug 937268).
api.SVGGraphicsElement.getCTM 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGGraphicsElement.getScreenCTM 📋Firefox11/29/2005 Edge7/29/20153529
Safari: Transforms on the parent are not propagated down to its children; see bug 209220.Safari on iOS: Transforms on the parent are not propagated down to its children; see bug 209220.WebView on iOS: Transforms on the parent are not propagated down to its children; see bug 209220.
api.SVGGraphicsElement.requiredExtensions 📋Safari10/26/2007 Edge7/29/20152833
api.SVGGraphicsElement.systemLanguage 📋Safari10/26/2007 Edge7/29/20152833
api.SVGGraphicsElement.transform 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGImageElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGImageElement.height 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGImageElement.href 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGImageElement.preserveAspectRatio 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGImageElement.width 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGImageElement.x 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGImageElement.y 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLength 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLength.convertToSpecifiedUnits 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLength.newValueSpecifiedUnits 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLength.unitType 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLength.value 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLength.valueAsString 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLength.valueInSpecifiedUnits 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLengthList 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLengthList.appendItem 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLengthList.clear 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLengthList.getItem 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLengthList.initialize 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLengthList.insertItemBefore 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLengthList.numberOfItems 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLengthList.removeItem 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLengthList.replaceItem 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLineElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLineElement.x1 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLineElement.x2 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLineElement.y1 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLineElement.y2 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLinearGradientElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLinearGradientElement.x1 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLinearGradientElement.x2 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLinearGradientElement.y1 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGLinearGradientElement.y2 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGMarkerElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGMarkerElement.markerHeight 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGMarkerElement.markerUnits 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGMarkerElement.markerWidth 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGMarkerElement.orientAngle 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGMarkerElement.orientType 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGMarkerElement.preserveAspectRatio 📋Firefox10/24/2006 Edge7/29/20153200
api.SVGMarkerElement.refX 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGMarkerElement.refY 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGMarkerElement.setOrientToAngle 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGMarkerElement.setOrientToAuto 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGMarkerElement.viewBox 📋Firefox10/24/2006 Edge7/29/20153200
api.SVGMaskElement 📋Safari10/26/2007 Edge7/29/20152833
api.SVGMaskElement.height 📋Safari10/26/2007 Edge7/29/20152833
api.SVGMaskElement.maskContentUnits 📋Safari3/18/2008 Edge7/29/20152689
api.SVGMaskElement.maskUnits 📋Safari3/18/2008 Edge7/29/20152689
api.SVGMaskElement.width 📋Safari10/26/2007 Edge7/29/20152833
api.SVGMaskElement.x 📋Safari10/26/2007 Edge7/29/20152833
api.SVGMaskElement.y 📋Safari10/26/2007 Edge7/29/20152833
api.SVGMetadataElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGNumber 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGNumber.value 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGNumberList 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGNumberList.appendItem 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGNumberList.clear 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGNumberList.getItem 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGNumberList.initialize 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGNumberList.insertItemBefore 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGNumberList.numberOfItems 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGNumberList.removeItem 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGNumberList.replaceItem 📋Firefox6/17/2008 Edge7/29/20152598
api.SVGPathElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPatternElement 📋Safari10/26/2007 Edge7/29/20152833
api.SVGPatternElement.height 📋Safari10/26/2007 Edge7/29/20152833
api.SVGPatternElement.href 📋Safari10/26/2007 Edge7/29/20152833
api.SVGPatternElement.patternContentUnits 📋Safari10/26/2007 Edge7/29/20152833
api.SVGPatternElement.patternTransform 📋Safari10/26/2007 Edge7/29/20152833
api.SVGPatternElement.patternUnits 📋Safari10/26/2007 Edge7/29/20152833
api.SVGPatternElement.preserveAspectRatio 📋Safari10/26/2007 Edge7/29/20152833
api.SVGPatternElement.viewBox 📋Safari10/26/2007 Edge7/29/20152833
api.SVGPatternElement.width 📋Safari10/26/2007 Edge7/29/20152833
api.SVGPatternElement.x 📋Safari10/26/2007 Edge7/29/20152833
api.SVGPatternElement.y 📋Safari10/26/2007 Edge7/29/20152833
api.SVGPoint 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPoint.matrixTransform 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPoint.x 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPoint.y 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPointList 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPointList.appendItem 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPointList.clear 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPointList.getItem 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPointList.initialize 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPointList.insertItemBefore 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPointList.numberOfItems 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPointList.removeItem 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPointList.replaceItem 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPolygonElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPolygonElement.animatedPoints 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPolygonElement.points 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPolylineElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPolylineElement.animatedPoints 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPolylineElement.points 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPreserveAspectRatio 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPreserveAspectRatio.align 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGPreserveAspectRatio.meetOrSlice 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRadialGradientElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRadialGradientElement.cx 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRadialGradientElement.cy 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRadialGradientElement.fx 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRadialGradientElement.fy 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRadialGradientElement.r 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRect 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRect.height Firefox11/29/2005 Edge7/29/20153529
api.SVGRect.width Firefox11/29/2005 Edge7/29/20153529
api.SVGRect.x Firefox11/29/2005 Edge7/29/20153529
api.SVGRect.y Firefox11/29/2005 Edge7/29/20153529
api.SVGRectElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRectElement.height 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRectElement.rx 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRectElement.ry 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRectElement.width 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRectElement.x 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGRectElement.y 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.createSVGAngle 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.createSVGLength 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.createSVGMatrix 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.createSVGNumber 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.createSVGPoint 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.createSVGRect 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.createSVGTransform 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.createSVGTransformFromMatrix 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.currentScale 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.currentTranslate 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.deselectAll 📋Safari10/26/2007 Edge7/29/20152833
api.SVGSVGElement.forceRedraw 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.getCurrentTime 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.getElementById 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.height 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.pauseAnimations 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.preserveAspectRatio 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.setCurrentTime 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.suspendRedraw 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.unpauseAnimations 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.unsuspendRedraw 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.unsuspendRedrawAll 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.viewBox 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.width 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.x 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSVGElement.y 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGScriptElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGScriptElement.href 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGScriptElement.type 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGStopElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGStopElement.offset 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGStringList 📋Safari10/26/2007 Edge7/29/20152833
Firefox: Since version 13, SVGStringList is indexable like Array which is a non-standard behavior.Firefox for Android: SVGStringList is indexable like Array which is a non-standard behavior.
api.SVGStringList.appendItem 📋Safari10/26/2007 Edge7/29/20152833
api.SVGStringList.clear 📋Safari10/26/2007 Edge7/29/20152833
api.SVGStringList.getItem 📋Safari10/26/2007 Edge7/29/20152833
api.SVGStringList.initialize 📋Safari10/26/2007 Edge7/29/20152833
api.SVGStringList.insertItemBefore 📋Safari10/26/2007 Edge7/29/20152833
api.SVGStringList.numberOfItems 📋Safari10/26/2007 Edge7/29/20152833
api.SVGStringList.removeItem 📋Safari10/26/2007 Edge7/29/20152833
api.SVGStringList.replaceItem 📋Safari10/26/2007 Edge7/29/20152833
api.SVGStyleElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGStyleElement.media 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGStyleElement.title 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGStyleElement.type 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSwitchElement 📋Safari10/26/2007 Edge7/29/20152833
api.SVGSymbolElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSymbolElement.preserveAspectRatio 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGSymbolElement.viewBox 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTSpanElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextContentElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextContentElement.getCharNumAtPosition 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextContentElement.getComputedTextLength 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextContentElement.getEndPositionOfChar 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextContentElement.getExtentOfChar 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextContentElement.getNumberOfChars 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextContentElement.getRotationOfChar 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextContentElement.getStartPositionOfChar 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextContentElement.getSubStringLength 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextContentElement.lengthAdjust 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextContentElement.selectSubString 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextContentElement.textLength 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextPathElement 📋Firefox10/24/2006 Edge7/29/20153200
api.SVGTextPathElement.href 📋Firefox10/24/2006 Edge7/29/20153200
api.SVGTextPathElement.method 📋Safari3/18/2008 Edge7/29/20152689
api.SVGTextPathElement.spacing 📋Safari3/18/2008 Edge7/29/20152689
api.SVGTextPathElement.startOffset 📋Safari3/18/2008 Edge7/29/20152689
api.SVGTextPositioningElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextPositioningElement.dx 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextPositioningElement.dy 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextPositioningElement.rotate 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextPositioningElement.x 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTextPositioningElement.y 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTitleElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransform 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransform.angle 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransform.matrix 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransform.setMatrix 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransform.setRotate 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransform.setScale 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransform.setSkewX 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransform.setSkewY 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransform.setTranslate 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransform.type 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransformList 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransformList.appendItem 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransformList.clear 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransformList.consolidate 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransformList.createSVGTransformFromMatrix 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransformList.getItem 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransformList.initialize 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransformList.insertItemBefore 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransformList.numberOfItems 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransformList.removeItem 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGTransformList.replaceItem 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGUnitTypes 📋Safari3/18/2008 Edge7/29/20152689
api.SVGUseElement 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGUseElement.height 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGUseElement.href 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGUseElement.width 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGUseElement.x 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGUseElement.y 📋Firefox11/29/2005 Edge7/29/20153529
api.SVGViewElement 📋Safari10/26/2007 Edge7/29/20152833
api.SVGViewElement.preserveAspectRatio 📋Safari10/26/2007 Edge7/29/20152833
api.SVGViewElement.viewBox 📋Safari10/26/2007 Edge7/29/20152833
api.Screen 📋Safari6/23/2003 Edge7/29/20154419
api.Screen.availHeight 📋Safari6/23/2003 Edge7/29/20154419
Edge: Always reflects the main screen.
api.Screen.availWidth 📋Safari6/23/2003 Edge7/29/20154419
Edge: Always reflects the main screen.
api.Screen.colorDepth 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Starting with version 59 this property is no longer required to always return 24.Chrome Android: Starting with version 59 this property is no longer required to always return 24.Quest Browser: Starting with version 5.0 this property is no longer required to always return 24.Samsung Internet: Starting with Samsung Internet 7.0 this property is no longer required to always return 24.WebView Android: Starting with version 59 this property is no longer required to always return 24.
api.Screen.height 📋Safari6/23/2003 Edge7/29/20154419
api.Screen.pixelDepth 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Starting with version 59 this property is no longer required to always return 24.Chrome Android: Starting with version 59 this property is no longer required to always return 24.Quest Browser: Starting with version 5.0 this property is no longer required to always return 24.Samsung Internet: Starting with Samsung Internet 7.0 this property is no longer required to always return 24.WebView Android: Starting with version 59 this property is no longer required to always return 24.
api.Screen.width 📋Safari6/23/2003 Edge7/29/20154419
api.ScriptProcessorNode Safari10/22/2013 Edge7/29/2015645
api.ScriptProcessorNode.audioprocess_event Safari10/22/2013 Edge7/29/2015645
api.ScriptProcessorNode.bufferSize 📋Safari10/22/2013 Edge7/29/2015645
api.Selection 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.addRange 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.anchorNode 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.anchorOffset 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.collapse 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.collapseToEnd 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.collapseToStart 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.containsNode 📋Firefox11/9/2004 Edge7/29/20153914
Firefox: Before Firefox 35, the method didn't throw if node was null.Firefox for Android: Before Firefox for Android 35, the method didn't throw if node was null.
api.Selection.deleteFromDocument 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.extend 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.focusNode 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.focusOffset 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.getRangeAt 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.isCollapsed 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.rangeCount 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.removeAllRanges 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.selectAllChildren 📋Firefox11/9/2004 Edge7/29/20153914
api.Selection.toString 📋Firefox11/9/2004 Edge7/29/20153914
Firefox: Before Firefox 139, toString() returns an empty string for selected texts in form elements. See bug 85686.Firefox for Android: Before Firefox for Android 139, toString() returns an empty string for selected texts in form elements. See bug 85686.
api.Storage 📋Safari6/8/2009 Edge7/29/20152242
api.Storage.clear 📋Safari6/8/2009 Edge7/29/20152242
api.Storage.getItem 📋Safari6/8/2009 Edge7/29/20152242
api.Storage.key 📋Safari6/8/2009 Edge7/29/20152242
api.Storage.length 📋Safari6/8/2009 Edge7/29/20152242
api.Storage.removeItem 📋Safari6/8/2009 Edge7/29/20152242
api.Storage.setItem 📋Safari6/8/2009 Edge7/29/20152242
api.StorageEvent 📋Safari6/8/2009 Edge7/29/20152242
api.StorageEvent.initStorageEvent 📋Safari6/8/2009 Edge7/29/20152242
api.StorageEvent.key 📋Safari6/8/2009 Edge7/29/20152242
api.StorageEvent.newValue 📋Safari6/8/2009 Edge7/29/20152242
api.StorageEvent.oldValue 📋Safari6/8/2009 Edge7/29/20152242
api.StorageEvent.storageArea 📋Safari6/8/2009 Edge7/29/20152242
api.StorageEvent.url 📋Safari6/7/2010 Edge7/29/20151878
api.StyleSheet 📋Safari6/23/2003 Edge7/29/20154419
api.StyleSheet.disabled 📋Safari6/23/2003 Edge7/29/20154419
api.StyleSheet.href 📋Safari6/23/2003 Edge7/29/20154419
api.StyleSheet.media 📋Safari6/23/2003 Edge7/29/20154419
api.StyleSheet.ownerNode 📋Safari6/23/2003 Edge7/29/20154419
api.StyleSheet.parentStyleSheet 📋Safari6/23/2003 Edge7/29/20154419
api.StyleSheet.title 📋Safari6/23/2003 Edge7/29/20154419
api.StyleSheet.type 📋Safari6/23/2003 Edge7/29/20154419
api.StyleSheetList 📋Safari6/23/2003 Edge7/29/20154419
api.StyleSheetList.item 📋Safari6/23/2003 Edge7/29/20154419
api.StyleSheetList.length 📋Safari6/23/2003 Edge7/29/20154419
api.Text 📋Safari6/23/2003 Edge7/29/20154419
api.Text.splitText 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Before Chrome 30, the offset parameter was optional.Chrome Android: Before Chrome Android 30, the offset parameter was optional.Quest Browser: Before Quest Browser 5.0, the offset parameter was optional.Opera: Before Opera 17, the offset parameter was optional.Opera Android: Before Opera 17, the offset parameter was optional.Safari: The offset parameter is optional.Safari on iOS: The offset parameter is optional.Samsung Internet: Before Samsung Internet 2.0, the offset parameter was optional.WebView Android: Before version 4.4, the offset parameter was optional.WebView on iOS: The offset parameter is optional.
api.Text.wholeText 📋Safari6/8/2009 Edge7/29/20152242
api.TextMetrics 📋Firefox11/29/2005 Edge7/29/20153529
api.TextMetrics.width 📋Firefox11/29/2005 Edge7/29/20153529
api.TextTrack 📋Safari7/25/2012 Edge7/29/20151099
Firefox: Firefox versions before Firefox 50 didn't display captions when playing media without one or more video tracks being played.
api.TextTrack.activeCues 📋Safari7/25/2012 Edge7/29/20151099
Firefox: Starting in Firefox 69, cues are no longer incorrectly loaded when the TextTrack's mode is disabled; if that's the case, the returned list is empty.
api.TextTrack.addCue 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrack.cuechange_event 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrack.cues 📋Safari7/25/2012 Edge7/29/20151099
Firefox: Starting in Firefox 69, cues are no longer incorrectly loaded when the TextTrack's mode is disabled; if that's the case, the returned list is empty.
api.TextTrack.kind 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrack.label 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrack.language 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrack.mode 📋Safari7/25/2012 Edge7/29/20151099
Firefox: Before Firefox 52, using JavaScript to change the mode of a text track that's part of a media element would send one change event to the element's textTracks TextTrackList for each change, even if multiple changes are made in a single pass through the Firefox event loop. Starting in Firefox 52, these changes are reflected by a single event.
api.TextTrack.removeCue 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackCue 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackCue.endTime 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackCue.enter_event 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackCue.exit_event 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackCue.id 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackCue.pauseOnExit 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackCue.startTime 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackCue.track 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackCueList 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackCueList.getCueById 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackCueList.length 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackList 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackList.addtrack_event 📋Safari7/25/2012 Edge7/29/20151099
api.TextTrackList.length 📋Safari7/25/2012 Edge7/29/20151099
api.TimeRanges 📋Safari3/18/2008 Edge7/29/20152689
api.TimeRanges.end 📋Safari3/18/2008 Edge7/29/20152689
api.TimeRanges.length 📋Safari3/18/2008 Edge7/29/20152689
api.TimeRanges.start 📋Safari3/18/2008 Edge7/29/20152689
api.TrackEvent 📋Safari7/25/2012 Edge7/29/20151099
api.TrackEvent.track 📋Safari7/25/2012 Edge7/29/20151099
api.TransitionEvent 📋Firefox3/22/2011 Edge7/29/20151590
api.TransitionEvent.elapsedTime 📋Firefox3/22/2011 Edge7/29/20151590
api.TransitionEvent.propertyName 📋Firefox3/22/2011 Edge7/29/20151590
api.TreeWalker 📋Safari10/26/2007 Edge7/29/20152833
api.TreeWalker.currentNode 📋Safari10/26/2007 Edge7/29/20152833
api.TreeWalker.filter 📋Safari10/26/2007 Edge7/29/20152833
api.TreeWalker.firstChild 📋Safari10/26/2007 Edge7/29/20152833
api.TreeWalker.lastChild 📋Safari10/26/2007 Edge7/29/20152833
api.TreeWalker.nextNode 📋Safari10/26/2007 Edge7/29/20152833
api.TreeWalker.nextSibling 📋Safari10/26/2007 Edge7/29/20152833
api.TreeWalker.parentNode 📋Safari10/26/2007 Edge7/29/20152833
api.TreeWalker.previousNode 📋Safari10/26/2007 Edge7/29/20152833
api.TreeWalker.previousSibling 📋Safari10/26/2007 Edge7/29/20152833
api.TreeWalker.root 📋Safari10/26/2007 Edge7/29/20152833
api.TreeWalker.whatToShow 📋Safari10/26/2007 Edge7/29/20152833
api.UIEvent 📋Safari6/23/2003 Edge7/29/20154419
api.UIEvent.UIEvent 📋Firefox3/13/2012 Edge7/29/20151233
api.UIEvent.detail 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: Always 0 on click and dblclick events. On mousedown and mouseup events, the count is not unique to the element, but is rather the global click count for the current document -- even across refreshes.
api.UIEvent.initUIEvent 📋Safari6/23/2003 Edge7/29/20154419
api.UIEvent.view 📋Safari6/23/2003 Edge7/29/20154419
api.URL 📋Firefox2/19/2013 Edge7/29/2015890
Firefox: Before version 57, Firefox had a bug whereby single quotes contained in URLs are escaped when accessed via URL APIs (see bug 1386683).Firefox for Android: Before version 57, Firefox for Android had a bug whereby single quotes contained in URLs are escaped when accessed via URL APIs (see bug 1386683).Node.js: Available as a part of the url module.
api.URL.createObjectURL_static 📋Safari7/25/2012 Edge7/29/20151099
Firefox: createObjectURL() is no longer available within the context of a ServiceWorker.Firefox for Android: createObjectURL() is no longer available within the context of a ServiceWorker.Internet Explorer: If the underlying object does not have a content type set, using this URL as the src of an img tag fails intermittently with error DOM7009.
api.URL.revokeObjectURL_static 📋Safari7/25/2012 Edge7/29/20151099
Firefox: revokeObjectURL() is no longer available within the context of a ServiceWorker.Firefox for Android: revokeObjectURL() is no longer available within the context of a ServiceWorker.
api.VTTCue 📋Safari7/25/2012 Edge7/29/20151099
api.VTTCue.getCueAsHTML 📋Safari7/25/2012 Edge7/29/20151099
api.VTTCue.text 📋Safari7/25/2012 Edge7/29/20151099
api.ValidityState 📋Safari6/7/2010 Edge7/29/20151878
api.ValidityState.badInput 📋Safari10/22/2013 Edge7/29/2015645
api.ValidityState.customError 📋Safari6/7/2010 Edge7/29/20151878
api.ValidityState.patternMismatch 📋Safari6/7/2010 Edge7/29/20151878
api.ValidityState.rangeOverflow 📋Safari6/7/2010 Edge7/29/20151878
api.ValidityState.rangeUnderflow 📋Safari6/7/2010 Edge7/29/20151878
api.ValidityState.stepMismatch 📋Safari6/7/2010 Edge7/29/20151878
api.ValidityState.tooLong 📋Safari6/7/2010 Edge7/29/20151878
Edge: Not supported in the unlikely case of the value being initially set too long, and then changed by the user to a still incorrect state. Per caniuse.com.Firefox: Not supported in the unlikely case of the value being initially set too long, and then changed by the user to a still incorrect state. Per caniuse.com.
api.ValidityState.typeMismatch 📋Safari6/7/2010 Edge7/29/20151878
api.ValidityState.valid 📋Safari6/7/2010 Edge7/29/20151878
api.ValidityState.valueMissing 📋Safari6/7/2010 Edge7/29/20151878
api.WEBGL_compressed_texture_s3tc 📋Firefox6/25/2013 Edge7/29/2015764
api.WEBGL_depth_texture 📋Firefox6/25/2013 Edge7/29/2015764
api.WaveShaperNode 📋Safari7/25/2012 Edge7/29/20151099
api.WaveShaperNode.curve 📋Safari7/25/2012 Edge7/29/20151099
api.WaveShaperNode.oversample 📋Safari7/25/2012 Edge7/29/20151099
api.WebGLActiveInfo 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLActiveInfo.name 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLActiveInfo.size 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLActiveInfo.type 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLBuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLFramebuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLProgram 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderbuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext 📋Firefox3/22/2011 Edge7/29/20151590
Edge: To access the WebGL context, use experimental-webgl rather than the standard webgl identifier.Internet Explorer: To access the WebGL context, use experimental-webgl rather than the standard webgl identifier.
api.WebGLRenderingContext.activeTexture 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.attachShader 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.bindAttribLocation 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.bindBuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.bindFramebuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.bindRenderbuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.bindTexture 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.blendColor 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.blendEquation 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.blendEquationSeparate 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.blendFunc 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.blendFuncSeparate 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.bufferData 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.bufferSubData 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.canvas 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.checkFramebufferStatus 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.clear 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.clearColor 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.clearDepth 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.clearStencil 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.colorMask 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.compileShader 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.compressedTexImage2D 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.compressedTexSubImage2D 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.copyTexImage2D 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.copyTexSubImage2D 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.createBuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.createFramebuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.createProgram 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.createRenderbuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.createShader 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.createTexture 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.cullFace 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.deleteBuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.deleteFramebuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.deleteProgram 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.deleteRenderbuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.deleteShader 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.deleteTexture 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.depthFunc 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.depthMask 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.depthRange 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.detachShader 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.disable 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.disableVertexAttribArray 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.drawArrays 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.drawElements 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.drawingBufferHeight 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.drawingBufferWidth 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.enable 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.enableVertexAttribArray 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.finish 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.flush 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.framebufferRenderbuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.framebufferTexture2D 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.frontFace 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.generateMipmap 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getActiveAttrib 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getActiveUniform 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getAttachedShaders 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getAttribLocation 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getBufferParameter 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getContextAttributes 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getError 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getExtension 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getFramebufferAttachmentParameter 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getParameter 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getProgramInfoLog 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getProgramParameter 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getRenderbufferParameter 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getShaderInfoLog 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getShaderParameter 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getShaderPrecisionFormat 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getShaderSource 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getSupportedExtensions 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getTexParameter 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getUniform 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getUniformLocation 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getVertexAttrib 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.getVertexAttribOffset 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.hint 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.isBuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.isContextLost 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.isEnabled 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.isFramebuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.isProgram 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.isRenderbuffer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.isShader 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.isTexture 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.lineWidth 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.linkProgram 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.pixelStorei 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.polygonOffset 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.readPixels 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.renderbufferStorage 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.sampleCoverage 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.scissor 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.shaderSource 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.stencilFunc 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.stencilFuncSeparate 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.stencilMask 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.stencilMaskSeparate 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.stencilOp 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.stencilOpSeparate 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.texImage2D 📋Firefox3/22/2011 Edge7/29/20151590
Firefox for Android: Textures from video elements are not supported. See bug 1884282.
api.WebGLRenderingContext.texParameterf 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.texParameteri 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.texSubImage2D 📋Firefox3/22/2011 Edge7/29/20151590
Firefox for Android: Textures from video elements are not supported. See bug 1884282.
api.WebGLRenderingContext.uniform1f 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform1fv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform1i 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform1iv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform2f 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform2fv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform2i 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform2iv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform3f 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform3fv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform3i 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform3iv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform4f 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform4fv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform4i 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniform4iv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniformMatrix2fv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniformMatrix3fv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.uniformMatrix4fv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.useProgram 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.validateProgram 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.vertexAttrib1f 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.vertexAttrib1fv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.vertexAttrib2f 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.vertexAttrib2fv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.vertexAttrib3f 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.vertexAttrib3fv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.vertexAttrib4f 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.vertexAttrib4fv 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.vertexAttribPointer 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLRenderingContext.viewport 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLShader 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLShaderPrecisionFormat 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLShaderPrecisionFormat.precision 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLShaderPrecisionFormat.rangeMax 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLShaderPrecisionFormat.rangeMin 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLTexture 📋Firefox3/22/2011 Edge7/29/20151590
api.WebGLUniformLocation 📋Firefox3/22/2011 Edge7/29/20151590
api.WebSocket 📋Safari6/7/2010 Edge7/29/20151878
Firefox: Message size limited to 16 MB (see bug 711205).Firefox for Android: Message size limited to 16 MB (see bug 711205).
api.WebSocket.WebSocket 📋Safari6/7/2010 Edge7/29/20151878
api.WebSocket.binaryType 📋Firefox3/13/2012 Edge7/29/20151233
api.WebSocket.bufferedAmount 📋Safari6/7/2010 Edge7/29/20151878
api.WebSocket.close 📋Safari6/7/2010 Edge7/29/20151878
api.WebSocket.close_event 📋Safari6/7/2010 Edge7/29/20151878
api.WebSocket.error_event 📋Safari6/7/2010 Edge7/29/20151878
api.WebSocket.extensions 📋Firefox11/8/2011 Edge7/29/20151359
api.WebSocket.message_event 📋Safari6/7/2010 Edge7/29/20151878
api.WebSocket.open_event 📋Safari6/7/2010 Edge7/29/20151878
api.WebSocket.protocol 📋Firefox9/27/2011 Edge7/29/20151401
api.WebSocket.protocol_rfc_6455 Firefox3/13/2012 Edge7/29/20151233
api.WebSocket.readyState 📋Safari6/7/2010 Edge7/29/20151878
api.WebSocket.send 📋Safari6/7/2010 Edge7/29/20151878
Firefox: Only parameter of type ArrayBuffer and String supported.Firefox: Only parameter of type String supported.Firefox: Only parameter of type String supported. Returns boolean.Firefox for Android: Only parameter of type ArrayBuffer and String supported.Firefox for Android: Only parameter of type String supported.Firefox for Android: Only parameter of type String supported. Returns boolean.
api.WebSocket.url 📋Firefox9/27/2011 Edge7/29/20151401
api.WebSocket.worker_support Safari6/7/2010 Edge7/29/20151878
api.WheelEvent 📋Safari10/26/2007 Edge7/29/20152833
api.WheelEvent.WheelEvent 📋Firefox11/20/2012 Edge7/29/2015981
api.WheelEvent.deltaMode 📋Firefox11/20/2012 Edge7/29/2015981
api.WheelEvent.deltaX 📋Firefox11/20/2012 Edge7/29/2015981
Internet Explorer: IE9 supports an old draft of the spec where this value was a long instead of a double.
api.WheelEvent.deltaY 📋Firefox11/20/2012 Edge7/29/2015981
Internet Explorer: IE9 supports an old draft of the spec where this value was a long instead of a double.
api.WheelEvent.deltaZ 📋Firefox11/20/2012 Edge7/29/2015981
Internet Explorer: IE9 supports an old draft of the spec where this value was a long instead of a double.
api.Window 📋Safari6/23/2003 Edge7/29/20154419
Node.js: The Window interface is not implemented, but some methods, and properties are available in the global scope.
api.Window.DOMContentLoaded_event 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.alert 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Starting with Chrome 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Chrome Android: Starting with Chrome Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Quest Browser: Starting with Quest Browser 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera Android: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Samsung Internet: Starting with Samsung Internet 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.WebView Android: Starting with WebView Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.
api.Window.beforeunload_event 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.beforeunload_event.return_string_activation Firefox11/9/2004 Edge7/29/20153914
api.Window.blur 📋Safari6/23/2003 Edge7/29/20154419
api.Window.blur_event 📋Safari7/20/2011 Edge7/29/20151470
Firefox: Apart from firing the event on window as other browsers do, Firefox also fires the event on the document object. See bug 1228802.Firefox: Before Firefox 24, the interface for this event is a plain Event, not FocusEvent.Firefox for Android: Apart from firing the event on window as other browsers do, Firefox for Android also fires the event on the document object. See bug 1228802.Firefox for Android: Before Firefox for Android 24, the interface for this event is a plain Event, not FocusEvent.
api.Window.cancelAnimationFrame 📋Firefox8/6/2013 Edge7/29/2015722
api.Window.captureEvents 📋Safari6/23/2003 Edge7/29/20154419
api.Window.close 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Before Chrome 95, script-closeability depended on having an opener, not on being created by web content.Chrome Android: Before Chrome Android 95, script-closeability depended on having an opener, not on being created by web content.Deno: Exits the current Deno process.Firefox: Before Firefox 128, script-closeability depended on having an opener, not on being created by web content.Firefox for Android: Before Firefox for Android 128, script-closeability depended on having an opener, not on being created by web content.Quest Browser: Before Quest Browser 18.0, script-closeability depended on having an opener, not on being created by web content.Samsung Internet: Before Samsung Internet 17.0, script-closeability depended on having an opener, not on being created by web content.WebView Android: Before WebView Android 95, script-closeability depended on having an opener, not on being created by web content.
api.Window.closed 📋Safari6/23/2003 Edge7/29/20154419
api.Window.confirm 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Starting with Chrome 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Chrome Android: Starting with Chrome Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Quest Browser: Starting with Quest Browser 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera Android: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Samsung Internet: Starting with Samsung Internet 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.WebView Android: Starting with Chrome 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.
api.Window.devicePixelRatio 📋Safari10/26/2007 Edge7/29/20152833
Safari: In Safari, the devicePixelRatio does not change when the page is zoomed. See bug 124862.Safari on iOS: In Safari on iOS, the devicePixelRatio does not change when the page is zoomed. See bug 124862.WebView on iOS: In WebView on iOS, the devicePixelRatio does not change when the page is zoomed. See bug 124862.
api.Window.document 📋Safari6/23/2003 Edge7/29/20154419
api.Window.error_event 📋Safari7/20/2011 Edge7/29/20151470
api.Window.focus 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Starting in Chrome 66, opening a popup in fullscreen mode and calling this function will end fullscreen mode.
api.Window.focus_event 📋Safari7/20/2011 Edge7/29/20151470
Firefox: Apart from firing the event on window as other browsers do, Firefox also fires the event on the document object. See bug 1228802.Firefox: Before Firefox 24, the interface for this event is a plain Event, not FocusEvent.Firefox for Android: Apart from firing the event on window as other browsers do, Firefox for Android also fires the event on the document object. See bug 1228802.Firefox for Android: Before Firefox for Android 24, the interface for this event is a plain Event, not FocusEvent.
api.Window.frameElement 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.frames 📋Safari6/23/2003 Edge7/29/20154419
api.Window.getComputedStyle 📋Firefox11/9/2004 Edge7/29/20153914
Firefox: Before version 62 this function returned null when called on a Window with no presentation (e.g. an iframe with display: none; set). Since 62 it returns a CSSStyleDeclaration object with length 0, containing empty strings (bug 1467722; also see bug 1471231 for further work).Firefox for Android: Before version 62 this function returned null when called on a Window with no presentation (e.g. an iframe with display: none; set). Since 62 it returns a CSSStyleDeclaration object with length 0, containing empty strings (bug 1467722; also see bug 1471231 for further work).
api.Window.getComputedStyle.pseudo_element_support Firefox6/30/2009 Edge7/29/20152220
api.Window.getSelection 📋Safari6/23/2003 Edge7/29/20154419
api.Window.hashchange_event 📋Firefox1/21/2010 Edge7/29/20152015
Chrome: A regular Event object is fired, rather than a HashChangeEvent object.
api.Window.history 📋Safari6/23/2003 Edge7/29/20154419
api.Window.innerHeight 📋Firefox11/9/2004 Edge7/29/20153914
Firefox: From version 4 to 24, this property could give a wrong value before page load in certain circumstances (see bug 641188).Firefox for Android: Before version 24, this property could give a wrong value before page load in certain circumstances (see bug 641188).Safari on iOS: This property returns the height of the visual viewport instead of the layout viewport. See bug 174362 for details.WebView on iOS: This property returns the height of the visual viewport instead of the layout viewport. See bug 174362 for details.
api.Window.innerWidth 📋Firefox11/9/2004 Edge7/29/20153914
Firefox: From version 4 to 24, this property could give a wrong value before page load in certain circumstances (see bug 641188).Firefox for Android: Before version 24, this property could give a wrong value before page load in certain circumstances (see bug 641188).Safari on iOS: This property returns the width of the visual viewport instead of the layout viewport. See bug 174362 for details.WebView on iOS: This property returns the width of the visual viewport instead of the layout viewport. See bug 174362 for details.
api.Window.length 📋Safari6/23/2003 Edge7/29/20154419
api.Window.load_event 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.localStorage 📋Safari6/8/2009 Edge7/29/20152242
Deno: The key used for the Web Storage bucket is based on various factors. See the Deno manual.
api.Window.location 📋Safari6/23/2003 Edge7/29/20154419
Deno: Reflects the value passed via the --location runtime flag.Firefox: Before Firefox 57, single quotes contained in URLs were escaped when accessed via URL APIs. See bug 1386683.Firefox for Android: Before Firefox for Android 57, single quotes contained in URLs were escaped when accessed via URL APIs. See bug 1386683.
api.Window.locationbar 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.matchMedia 📋Safari7/20/2011 Edge7/29/20151470
api.Window.menubar 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.message_event 📋Safari6/8/2009 Edge7/29/20152242
api.Window.moveBy 📋Safari6/23/2003 Edge7/29/20154419
api.Window.moveTo 📋Safari6/23/2003 Edge7/29/20154419
api.Window.name 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 86, if a new page from another domain is loaded into a tab, then window.name is not set to an empty string, which can allow some cross-site attacks. See bug 1685089 and bug 444222.Firefox for Android: Before Firefox for Android 86, if a new page from another domain is loaded into a tab, then window.name is not set to an empty string, which can allow some cross-site attacks. See bug 1685089 and bug 444222.
api.Window.navigator 📋Safari6/23/2003 Edge7/29/20154419
api.Window.offline_event 📋Safari6/8/2009 Edge7/29/20152242
api.Window.online_event 📋Safari6/8/2009 Edge7/29/20152242
api.Window.open 📋Safari6/23/2003 Edge7/29/20154419
Safari on iOS: This method will not function if the target parameter is unspecified or set to _blank.WebView on iOS: This method will not function if the target parameter is unspecified or set to _blank.
api.Window.opener 📋Safari6/23/2003 Edge7/29/20154419
api.Window.outerHeight 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.outerWidth 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.pagehide_event 📋Safari6/7/2010 Edge7/29/20151878
api.Window.pageshow_event 📋Safari6/7/2010 Edge7/29/20151878
api.Window.parent 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.personalbar 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.popstate_event 📋Safari6/7/2010 Edge7/29/20151878
Chrome: Before version 34, Chrome would fire a popstate event on page load.Chrome Android: Before version 34, Chrome Android would fire a popstate event on page load.Quest Browser: Before version 5.0, Quest Browser would fire a popstate event on page load.Safari: Before version 10, Safari would fire a popstate event on page load.Safari on iOS: Before version 10, Safari on iOS would fire a popstate event on page load.Samsung Internet: Before version 2.0, Samsung Internet would fire a popstate event on page load.WebView Android: Before version 37, WebView Android would fire a popstate event on page load.WebView on iOS: Before version 10, WebView on iOS would fire a popstate event on page load.
api.Window.postMessage 📋Firefox6/17/2008 Edge7/29/20152598
Firefox: Firefox 8 and up supports sending File and FileList objects between windows. This is only allowed if the recipient's principal is contained within the sender's principal for security reasons.Firefox: Before Firefox 6, the message parameter must be a string. Since Firefox 6, the message parameter is serialized using the structured clone algorithm. This means you can pass a broad variety of data objects safely to the destination window without having to serialize them yourself.Firefox for Android: Firefox for Android 8 and up supports sending File and FileList objects between windows. This is only allowed if the recipient's principal is contained within the sender's principal for security reasons.Firefox for Android: Before Firefox for Android 6, the message parameter must be a string. Since Firefox for Android 6, the message parameter is serialized using the structured clone algorithm. This means you can pass a broad variety of data objects safely to the destination window without having to serialize them yourself.Internet Explorer: IE10 had an important limitation: see this article for details.Internet Explorer: Support only for <frame> and <iframe>.
api.Window.postMessage.transfer_parameter Safari6/7/2010 Edge7/29/20151878
api.Window.print 📋Safari10/24/2003 Edge7/29/20154296
Chrome: Starting with Chrome 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Chrome Android: Starting with Chrome Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Quest Browser: Starting with Quest Browser 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera Android: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Samsung Internet: Starting with Samsung Internet 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.WebView Android: Starting with WebView Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.
api.Window.prompt 📋Safari6/23/2003 Edge7/29/20154419
Chrome: Starting with Chrome 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Chrome Android: Starting with Chrome Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Firefox: Firefox strips newline characters from the prompt response; see bug 1716229.Firefox for Android: Firefox for Android strips newline characters from the prompt response; see bug 1716229.Internet Explorer: This function has no effect in the Modern UI/Metro version of Internet Explorer for Windows 8. It does not display a prompt to the user, and always returns undefined. It is not clear whether this is a bug or intended behavior. Desktop versions of IE do implement this function.Quest Browser: Starting with Quest Browser 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Opera Android: Starting with Opera 33, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.Samsung Internet: Starting with Samsung Internet 5.0, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.WebView Android: Starting with WebView Android 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.
api.Window.releaseEvents 📋Safari6/23/2003 Edge7/29/20154419
api.Window.requestAnimationFrame 📋Firefox8/6/2013 Edge7/29/2015722
Edge: Before version 17, Edge does not reliably fire requestAnimationFrame before the paint cycle.Firefox: Callback parameter is a DOMHighResTimestamp. This means ten microsecond precision and zero time as performance.now().Firefox: Callback parameter is a DOMTimestamp. This means millisecond precision and zero time as Date.now().Firefox: Could be called with no input parameters.Internet Explorer: Internet Explorer does not reliably fire requestAnimationFrame before the paint cycle.
api.Window.resizeBy 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Since Firefox 7, it's no longer possible for a web site to change the default size of a window in a browser if the window wasn't created by window.open or contains more than one tab. See here for more details.
api.Window.resizeTo 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Since Firefox 7, it's no longer possible for a web site to change the default size of a window in a browser if the window wasn't created by window.open or contains more than one tab. See here for more details.
api.Window.resize_event 📋Safari10/24/2003 Edge7/29/20154296
Chrome: Chrome does not fire a resize event on page load.Chrome Android: Chrome Android does not fire a resize event on page load.Edge: Before Edge 79, Edge fired a resize event on page load. This is no longer the case.Firefox: Before Firefox 68, Firefox fired a resize event on page load. This is no longer the case.Firefox for Android: Before Firefox for Android 68, Firefox for Android fired a resize event on page load. This is no longer the case.Quest Browser: Quest Browser does not fire a resize event on page load.Opera: Opera does not fire a resize event on page load.Opera Android: Opera does not fire a resize event on page load.Samsung Internet: Samsung Internet does not fire a resize event on page load.WebView Android: WebView does not fire a resize event on page load.
api.Window.screen 📋Safari6/23/2003 Edge7/29/20154419
api.Window.screenX 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 28, Gecko was using device pixels instead of CSS pixels; in other words, it was assuming a value of screenPixelsPerCSSPixel of 1 for any device.Firefox for Android: Before Firefox for Android 28, Gecko was using device pixels instead of CSS pixels; in other words, it was assuming a value of screenPixelsPerCSSPixel of 1 for any device.
api.Window.screenY 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Before Firefox 28, Gecko was using device pixels instead of CSS pixels; in other words, it was assuming a value of screenPixelsPerCSSPixel of 1 for any device.Firefox for Android: Before Firefox for Android 28, Gecko was using device pixels instead of CSS pixels; in other words, it was assuming a value of screenPixelsPerCSSPixel of 1 for any device.
api.Window.scroll 📋Safari6/23/2003 Edge7/29/20154419
api.Window.scrollBy 📋Safari6/23/2003 Edge7/29/20154419
api.Window.scrollTo 📋Safari6/23/2003 Edge7/29/20154419
api.Window.scrollX 📋Safari6/23/2003 Edge7/29/20154419
api.Window.scrollY 📋Safari6/23/2003 Edge7/29/20154419
api.Window.scrollbars 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.self 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.sessionStorage 📋Firefox10/24/2006 Edge7/29/20153200
api.Window.status 📋Safari6/23/2003 Edge7/29/20154419
api.Window.statusbar 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.toolbar 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.top 📋Firefox11/9/2004 Edge7/29/20153914
Firefox: Starting in Firefox 6, this property is read only, as defined by the standard.
api.Window.unload_event 📋Firefox11/9/2004 Edge7/29/20153914
api.Window.window 📋Firefox11/9/2004 Edge7/29/20153914
api.Worker 📋Safari6/8/2009 Edge7/29/20152242
Node.js: Inherits from a Node EventEmitter instead of DOM EventTarget.Node.js: Also supports CommonJS modules, enabled for files ending with .cjs and for files ending with .js when the nearest parent package.json file contains a top-level field "type" with a value not of "commonjs".Node.js: Available as a part of the worker_threads module.
api.Worker.Worker 📋Safari6/8/2009 Edge7/29/20152242
Node.js: Takes entirely different options parameters.
api.Worker.error_event 📋Safari6/8/2009 Edge7/29/20152242
Node.js: Supports the event, but only via Node EventEmitter.
api.Worker.message_event 📋Safari6/8/2009 Edge7/29/20152242
Node.js: Supports the event, but only via Node EventEmitter.
api.Worker.postMessage 📋Safari6/8/2009 Edge7/29/20152242
Deno: The message parameter does not support cloning Blob values.Deno: The message parameter does not support cloning Blob values.Deno: The transfer parameter does not accept ArrayBuffer items. Passing an ArrayBuffer results in an error being thrown.Deno: The message parameter does not support SharedArrayBuffer.Deno: The transfer parameter is not supported, and results in an error being thrown.Deno: Data passed in the message parameter is serialized with JSON, not the structured clone algorithm.Deno: The transfer parameter is not supported, and results in an error being thrown.Internet Explorer: Internet Explorer does not support Transferable objects.Node.js: Only accepts an array of transfer objects as the second parameter, not an options object with a transfer property.Node.js: Only supports transferring ArrayBuffer and MessagePort objects.
api.Worker.terminate 📋Safari6/8/2009 Edge7/29/20152242
Node.js: Returns a Promise.Node.js: Takes an optional callback parameter to be executed when the worker has terminated.
api.WorkerGlobalScope 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerGlobalScope.error_event 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerGlobalScope.importScripts 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerGlobalScope.location 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerGlobalScope.self 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerLocation 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerLocation.hash 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerLocation.host 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerLocation.hostname 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerLocation.href 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerLocation.pathname 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerLocation.port 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerLocation.protocol 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerLocation.search 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerLocation.toString 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerNavigator 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerNavigator.appName 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerNavigator.appVersion 📋Safari6/8/2009 Edge7/29/20152242
api.WorkerNavigator.onLine 📋Safari6/8/2009 Edge7/29/20152242
Firefox: Since Firefox 4 the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity. Since Firefox 41, on OS X and Windows, the returned values follow the actual network connectivity, unless 'Work offline' mode is selected (where it will always return false).Opera: From Opera 11.1 until Opera 12.1, the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity.Opera Android: From Opera 11.1 until Opera 12.1, the browser returns true when 'Work Offline' mode is disabled and false when it is enabled, regardless of actual connectivity.WebView Android: Can incorrectly return true, see bug 41369933.
api.WorkerNavigator.platform 📋Safari6/8/2009 Edge7/29/20152242
Firefox: Before Firefox 69, platform would report running on a 32-bit CPU if running the 32-bit version of Firefox on a 64-bit system.Firefox: You can override the value returned by platform by setting the preference general.platform.override to the string you wish to be returned instead.
api.WorkerNavigator.userAgent 📋Safari6/8/2009 Edge7/29/20152242
api.XMLHttpRequest 📋Safari2/2/2004 Edge7/29/20154195
Internet Explorer: Implemented via ActiveXObject('Microsoft.XMLHTTP')
api.XMLHttpRequest.XMLHttpRequest 📋Firefox11/9/2004 Edge7/29/20153914
api.XMLHttpRequest.abort 📋Safari2/2/2004 Edge7/29/20154195
api.XMLHttpRequest.abort_event 📋Safari4/15/2005 Edge7/29/20153757
api.XMLHttpRequest.error_event 📋Firefox11/9/2004 Edge7/29/20153914
api.XMLHttpRequest.getAllResponseHeaders 📋Safari2/2/2004 Edge7/29/20154195
Firefox: Starting from Firefox 49, empty headers are returned as empty strings in case the preference network.http.keep_empty_response_headers_as_empty_string is set to true, defaulting to false. Before Firefox 49 empty headers had been ignored. Since Firefox 50 the preference defaults to true.Firefox for Android: Starting from Firefox for Android 49, empty headers are returned as empty strings in case the preference network.http.keep_empty_response_headers_as_empty_string is set to true, defaulting to false. Before Firefox for Android 49 empty headers had been ignored. Since Firefox for Android 50 the preference defaults to true.
api.XMLHttpRequest.getResponseHeader 📋Safari2/2/2004 Edge7/29/20154195
Firefox: Starting from Firefox 49, empty headers are returned as empty strings in case the preference network.http.keep_empty_response_headers_as_empty_string is set to true, defaulting to false. Before Firefox 49 empty headers had been ignored. Since Firefox 50 the preference defaults to true.Firefox for Android: Starting from Firefox for Android 49, empty headers are returned as empty strings in case the preference network.http.keep_empty_response_headers_as_empty_string is set to true, defaulting to false. Before Firefox for Android 49 empty headers had been ignored. Since Firefox for Android 50 the preference defaults to true.
api.XMLHttpRequest.load_event 📋Firefox11/9/2004 Edge7/29/20153914
api.XMLHttpRequest.loadend_event 📋Safari6/8/2009 Edge7/29/20152242
api.XMLHttpRequest.loadstart_event 📋Safari4/15/2005 Edge7/29/20153757
api.XMLHttpRequest.open 📋Safari2/2/2004 Edge7/29/20154195
Firefox: Starting in Firefox 30, synchronous requests on the main thread have been deprecated due to their negative impact on performance and the user experience. Therefore, the async parameter may not be false except in a Worker.Firefox for Android: Starting in Firefox for Android 30, synchronous requests on the main thread have been deprecated due to their negative impact on performance and the user experience. Therefore, the async parameter may not be false except in a Worker.
api.XMLHttpRequest.overrideMimeType 📋Safari2/2/2004 Edge7/29/20154195
Internet Explorer: Implemented via ActiveXObject
api.XMLHttpRequest.progress_event 📋Firefox11/9/2004 Edge7/29/20153914
api.XMLHttpRequest.readyState 📋Safari2/2/2004 Edge7/29/20154195
api.XMLHttpRequest.readystatechange_event 📋Safari2/2/2004 Edge7/29/20154195
api.XMLHttpRequest.response 📋Safari7/20/2011 Edge7/29/20151470
api.XMLHttpRequest.responseText 📋Safari2/2/2004 Edge7/29/20154195
Internet Explorer: Before Internet Explorer 10, the value of XMLHttpRequest.responseText could be read only once the request was complete.
api.XMLHttpRequest.responseType 📋Safari7/20/2011 Edge7/29/20151470
api.XMLHttpRequest.responseType.arraybuffer_value Safari7/20/2011 Edge7/29/20151470
api.XMLHttpRequest.responseType.blob_value Safari7/20/2011 Edge7/29/20151470
api.XMLHttpRequest.responseType.document_value Firefox3/13/2012 Edge7/29/20151233
api.XMLHttpRequest.responseXML 📋Firefox11/9/2004 Edge7/29/20153914
Firefox: Before Firefox 51, an error parsing the received data added a <parsererror> node to the top of the Document and then returned the Document in whatever state it happens to be in. This was inconsistent with the specification. Starting with Firefox 51, this scenario now correctly returns null as per the spec.Firefox for Android: Before Firefox for Android 51, an error parsing the received data added a <parsererror> node to the top of the Document and then returned the Document in whatever state it happens to be in. This was inconsistent with the specification. Starting with Firefox for Android 51, this scenario now correctly returns null as per the spec.
api.XMLHttpRequest.send 📋Safari2/2/2004 Edge7/29/20154195
api.XMLHttpRequest.send.body_ArrayBufferView_type Firefox4/2/2013 Edge7/29/2015848
api.XMLHttpRequest.send.body_ArrayBuffer_type Firefox12/20/2011 Edge7/29/20151317
api.XMLHttpRequest.send.body_Blob_type Firefox10/24/2006 Edge7/29/20153200
api.XMLHttpRequest.send.body_FormData_type Firefox10/24/2006 Edge7/29/20153200
api.XMLHttpRequest.setRequestHeader 📋Safari2/2/2004 Edge7/29/20154195
api.XMLHttpRequest.status 📋Safari2/2/2004 Edge7/29/20154195
Internet Explorer: Internet Explorer version 5 and 6 supported ajax calls using ActiveXObject()
api.XMLHttpRequest.statusText 📋Safari2/2/2004 Edge7/29/20154195
Internet Explorer: Internet Explorer version 5 and 6 supported ajax calls using ActiveXObject()
api.XMLHttpRequest.timeout 📋Firefox4/24/2012 Edge7/29/20151191
api.XMLHttpRequest.timeout_event 📋Firefox4/24/2012 Edge7/29/20151191
api.XMLHttpRequest.upload 📋Safari6/8/2009 Edge7/29/20152242
api.XMLHttpRequest.withCredentials 📋Safari6/8/2009 Edge7/29/20152242
Firefox: Starting with Firefox 11, it's no longer supported to use the withCredentials attribute when performing synchronous requests. Attempting to do so throws an NS_ERROR_DOM_INVALID_ACCESS_ERR exception.Firefox for Android: Starting with Firefox for Android 14, it's no longer supported to use the withCredentials attribute when performing synchronous requests. Attempting to do so throws an NS_ERROR_DOM_INVALID_ACCESS_ERR exception.Internet Explorer: Internet Explorer versions 8 and 9 supported cross-domain requests (CORS) using XDomainRequest.
api.XMLHttpRequest.worker_support Safari6/8/2009 Edge7/29/20152242
api.XMLHttpRequestEventTarget 📋Safari6/23/2003 Edge7/29/20154419
api.XMLHttpRequestUpload 📋Safari6/8/2009 Edge7/29/20152242
api.XMLHttpRequestUpload.abort_event 📋Safari6/8/2009 Edge7/29/20152242
api.XMLHttpRequestUpload.error_event 📋Safari6/8/2009 Edge7/29/20152242
api.XMLHttpRequestUpload.load_event 📋Safari6/8/2009 Edge7/29/20152242
api.XMLHttpRequestUpload.loadend_event 📋Safari6/8/2009 Edge7/29/20152242
api.XMLHttpRequestUpload.loadstart_event 📋Safari6/8/2009 Edge7/29/20152242
api.XMLHttpRequestUpload.progress_event 📋Safari6/8/2009 Edge7/29/20152242
api.XMLHttpRequestUpload.timeout_event 📋Firefox4/24/2012 Edge7/29/20151191
api.XMLSerializer 📋Firefox11/9/2004 Edge7/29/20153914
api.XMLSerializer.XMLSerializer 📋Firefox11/9/2004 Edge7/29/20153914
api.XMLSerializer.serializeToString 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathEvaluator 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathEvaluator.XPathEvaluator 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathEvaluator.createExpression 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathEvaluator.createNSResolver 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathEvaluator.evaluate 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathExpression 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathExpression.evaluate 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathResult 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathResult.booleanValue 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathResult.invalidIteratorState 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathResult.iterateNext 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathResult.numberValue 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathResult.resultType 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathResult.singleNodeValue 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathResult.snapshotItem 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathResult.snapshotLength 📋Firefox11/9/2004 Edge7/29/20153914
api.XPathResult.stringValue 📋Firefox11/9/2004 Edge7/29/20153914
api.XSLTProcessor 📋Firefox11/9/2004 Edge7/29/20153914
api.XSLTProcessor.XSLTProcessor 📋Firefox11/9/2004 Edge7/29/20153914
api.XSLTProcessor.clearParameters 📋Firefox11/9/2004 Edge7/29/20153914
api.XSLTProcessor.getParameter 📋Firefox11/9/2004 Edge7/29/20153914
Chrome: Chrome only supports string values.Chrome Android: Chrome Android only supports string values.Edge: Edge only supports string values.Quest Browser: Quest Browser only supports string values.Opera: Opera only supports string values.Opera Android: Opera only supports string values.Safari: Safari only supports string values.Safari on iOS: Safari on iOS only supports string values.Samsung Internet: Samsung Internet only supports string values.WebView Android: WebView only supports string values.WebView on iOS: WebView on iOS only supports string values.
api.XSLTProcessor.importStylesheet 📋Firefox11/9/2004 Edge7/29/20153914
api.XSLTProcessor.removeParameter 📋Firefox11/9/2004 Edge7/29/20153914
api.XSLTProcessor.reset 📋Firefox11/9/2004 Edge7/29/20153914
api.XSLTProcessor.setParameter 📋Firefox11/9/2004 Edge7/29/20153914
Chrome: Chrome only supports string values.Chrome Android: Chrome Android only supports string values.Edge: Edge only supports string values.Quest Browser: Quest Browser only supports string values.Opera: Opera only supports string values.Opera Android: Opera only supports string values.Safari: Safari only supports string values.Safari on iOS: Safari on iOS only supports string values.Samsung Internet: Samsung Internet only supports string values.WebView Android: WebView only supports string values.WebView on iOS: WebView on iOS only supports string values.
api.XSLTProcessor.transformToDocument 📋Firefox11/9/2004 Edge7/29/20153914
Chrome: Chrome returns null if an error occurs.Chrome Android: Chrome Android returns null if an error occurs.Edge: Edge returns null if an error occurs.Firefox: Firefox throws an exception if an error occurs.Firefox for Android: Firefox for Android throws an exception if an error occurs.Quest Browser: Quest Browser returns null if an error occurs.Opera: Opera 12.1 and earlier throws an exception if an error occurs.Opera: Opera 15 and later returns null if an error occurs.Opera Android: Opera Android 12.1 and earlier throws an exception if an error occurs.Opera Android: Opera Android 14 and later returns null if an error occurs.Safari: Safari returns null if an error occurs.Safari on iOS: Safari on iOS returns null if an error occurs.Samsung Internet: Samsung Internet returns null if an error occurs.WebView Android: WebView returns null if an error occurs.WebView on iOS: WebView on iOS returns null if an error occurs.
api.XSLTProcessor.transformToFragment 📋Firefox11/9/2004 Edge7/29/20153914
Chrome: Chrome returns null if an error occurs.Chrome Android: Chrome Android returns null if an error occurs.Edge: Edge returns null if an error occurs.Firefox: Firefox throws an exception if an error occurs.Firefox for Android: Firefox for Android throws an exception if an error occurs.Quest Browser: Quest Browser returns null if an error occurs.Opera: Opera 12.1 and earlier throws an exception if an error occurs.Opera: Opera 15 and later returns null if an error occurs.Opera Android: Opera Android 12.1 and earlier throws an exception if an error occurs.Opera Android: Opera Android 14 and later returns null if an error occurs.Safari: Safari returns null if an error occurs.Safari on iOS: Safari on iOS returns null if an error occurs.Samsung Internet: Samsung Internet returns null if an error occurs.WebView Android: WebView returns null if an error occurs.WebView on iOS: WebView on iOS returns null if an error occurs.
api.atob 📋Firefox11/9/2004 Edge7/29/20153914
api.btoa 📋Firefox11/9/2004 Edge7/29/20153914
api.clearInterval 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: From Internet Explorer 4 through 8, clearInterval is an Object rather than a Function. This behavior was fixed in Internet Explorer 9.Node.js: Takes a Timeout object instead of the intervalID.
api.clearInterval.worker_support Safari6/8/2009 Edge7/29/20152242
api.clearTimeout 📋Firefox11/9/2004 Edge7/29/20153914
Internet Explorer: From Internet Explorer 4 through 8, clearTimeout is an Object rather than a Function. This behavior was fixed in Internet Explorer 9.Node.js: Takes a Timeout object instead of the timeoutID.
api.clearTimeout.worker_support Safari6/8/2009 Edge7/29/20152242
api.console 📋Safari10/26/2007 Edge7/29/20152833
Internet Explorer: In Internet Explorer 8 and 9, the console object is undefined when the developer tools are not open. This behavior was fixed in Internet Explorer 10.
api.console.assert_static 📋Safari6/8/2009 Edge7/29/20152242
Node.js: Throws error when assertion fails.
api.console.clear_static 📋Safari10/22/2013 Edge7/29/2015645
api.console.count_static 📋Safari6/8/2009 Edge7/29/20152242
api.console.debug_static 📋Safari6/8/2009 Edge7/29/20152242
Node.js: Since Node.js 8.10.0, this method is an alias for console.log.
api.console.dir_static 📋Safari6/8/2009 Edge7/29/20152242
api.console.dirxml_static 📋Safari6/8/2009 Edge7/29/20152242
Node.js: Does not use Logger to log data.
api.console.error_static 📋Safari10/26/2007 Edge7/29/20152833
api.console.groupCollapsed_static 📋Safari7/20/2011 Edge7/29/20151470
Node.js: Alias for console.group
api.console.groupEnd_static 📋Safari6/8/2009 Edge7/29/20152242
api.console.group_static 📋Safari6/8/2009 Edge7/29/20152242
api.console.info_static 📋Safari10/26/2007 Edge7/29/20152833
Node.js: Alias for console.log
api.console.log_static 📋Safari10/26/2007 Edge7/29/20152833
api.console.substitution_strings Safari10/26/2007 Edge7/29/20152833
Chrome: In version 28, if a negative value is passed to %d, it will be rounded down to the closest negative integer, so -0.1 becomes -1.Chrome Android: In version 28, if a negative value is passed to %d, it will be rounded down to the closest negative integer, so -0.1 becomes -1.Deno: Before Deno 1.4, %c is not supported.Deno: %c only supports CSS properties color, background-color, font-weight, font-style, text-decoration-color, and text-decoration-line.Edge: Before Edge 79, %c is not supported.Edge: Before Edge 79, %d outputs a 0 if the specified value isn't a number.Internet Explorer: %c is not supported.Internet Explorer: %d outputs a 0 if the specified value isn't a number.Quest Browser: In version 5.0, if a negative value is passed to %d, it will be rounded down to the closest negative integer, so -0.1 becomes -1.Samsung Internet: In Samsung Internet 1.5, if a negative value is passed to %d, it will be rounded down to the closest negative integer, so -0.1 becomes -1.WebView Android: In version 4.4, if a negative value is passed to %d, it will be rounded down to the closest negative integer, so -0.1 becomes -1.
api.console.timeEnd_static 📋Safari6/8/2009 Edge7/29/20152242
api.console.time_static 📋Safari6/8/2009 Edge7/29/20152242
api.console.trace_static 📋Safari6/8/2009 Edge7/29/20152242
api.console.warn_static 📋Safari10/26/2007 Edge7/29/20152833
Node.js: Alias for console.error
api.console.worker_support Safari10/22/2013 Edge7/29/2015645
api.crypto 📋Firefox11/9/2004 Edge7/29/20153914
Node.js: Available as a part of the crypto module.
api.indexedDB 📋Firefox10/9/2012 Edge7/29/20151023
api.performance 📋Firefox9/27/2011 Edge7/29/20151401
Node.js: Available as a part of the perf_hooks module.
api.setInterval 📋Safari6/23/2003 Edge7/29/20154419
Node.js: Returns a Timeout object instead of the intervalID.Node.js: Does not support passing a code string and throws when the first parameter is not a function.
api.setInterval.supports_parameters_for_callback Safari2/2/2004 Edge7/29/20154195
api.setInterval.worker_support Safari6/8/2009 Edge7/29/20152242
api.setTimeout 📋Safari6/23/2003 Edge7/29/20154419
Node.js: Returns a Timeout object instead of the timeoutID.Node.js: Does not support passing a code string and throws when the first parameter is not a function.
api.setTimeout.supports_parameters_for_callback Safari2/2/2004 Edge7/29/20154195
api.setTimeout.worker_support Safari6/8/2009 Edge7/29/20152242
javascript.builtins.Array 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Array.Array 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Array.concat 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Array.entries 📋Firefox3/18/2014 Edge7/29/2015498
javascript.builtins.Array.every 📋Firefox11/29/2005 Edge7/29/20153529
javascript.builtins.Array.fill 📋Firefox7/22/2014 Edge7/29/2015372
javascript.builtins.Array.filter 📋Firefox11/29/2005 Edge7/29/20153529
javascript.builtins.Array.find 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Array.findIndex 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Array.forEach 📋Firefox11/29/2005 Edge7/29/20153529
javascript.builtins.Array.indexOf 📋Firefox11/29/2005 Edge7/29/20153529
javascript.builtins.Array.isArray 📋Safari6/7/2010 Edge7/29/20151878
javascript.builtins.Array.join 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Array.keys 📋Firefox3/18/2014 Edge7/29/2015498
javascript.builtins.Array.lastIndexOf 📋Firefox11/29/2005 Edge7/29/20153529
javascript.builtins.Array.length 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Array.map 📋Firefox11/29/2005 Edge7/29/20153529
javascript.builtins.Array.pop 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Array.push 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Array.reduce 📋Firefox6/17/2008 Edge7/29/20152598
javascript.builtins.Array.reduceRight 📋Firefox6/17/2008 Edge7/29/20152598
javascript.builtins.Array.reverse 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Array.shift 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Array.slice 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Array.some 📋Firefox11/29/2005 Edge7/29/20153529
javascript.builtins.Array.sort 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Array.splice 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: From Internet Explorer 5.5 through 8, all elements of the array will not be deleted if deleteCount is omitted. This behavior was fixed in Internet Explorer 9.
javascript.builtins.Array.toLocaleString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Array.toString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Array.unshift 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.ArrayBuffer 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.ArrayBuffer.ArrayBuffer 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.ArrayBuffer.byteLength 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.ArrayBuffer.isView 📋Safari10/22/2013 Edge7/29/2015645
javascript.builtins.ArrayBuffer.slice 📋Safari7/20/2011 Edge7/29/20151470
Firefox: The non-standard ArrayBuffer.slice() method has been removed in Firefox 53 (but the standardized version ArrayBuffer.prototype.slice() is kept.Firefox for Android: The non-standard ArrayBuffer.slice() method has been removed in Firefox for Android 53 (but the standardized version ArrayBuffer.prototype.slice() is kept.
javascript.builtins.Boolean 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Boolean.Boolean 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Boolean.toString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Boolean.valueOf 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.DataView 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.DataView 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.buffer 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.byteLength 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.byteOffset 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.getFloat32 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.getFloat64 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.getInt16 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.getInt32 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.getInt8 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.getUint16 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.getUint32 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.getUint8 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.setFloat32 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.setFloat64 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.setInt16 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.setInt32 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.setInt8 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.setUint16 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.setUint32 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.DataView.setUint8 📋Safari7/20/2011 Edge7/29/20151470
javascript.builtins.Date 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: The ISO8601 Date Format is not supported in Internet Explorer 8 or earlier.
javascript.builtins.Date.Date 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.UTC 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getDate 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getDay 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getFullYear 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getHours 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getMilliseconds 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getMinutes 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getMonth 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getSeconds 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getTime 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getTimezoneOffset 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getUTCDate 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getUTCDay 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getUTCFullYear 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getUTCHours 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getUTCMilliseconds 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getUTCMinutes 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getUTCMonth 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getUTCSeconds 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.getYear 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.now 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Date.parse 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.parse.iso_8601 Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Date.setDate 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setFullYear 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setHours 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setMilliseconds 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setMinutes 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setMonth 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setSeconds 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setTime 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setUTCDate 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setUTCFullYear 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setUTCHours 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setUTCMilliseconds 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setUTCMinutes 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setUTCMonth 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setUTCSeconds 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.setYear 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.toDateString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.toGMTString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.toISOString 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Date.toJSON 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Date.toLocaleDateString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.toLocaleString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.toLocaleTimeString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.toString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.toTimeString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.toUTCString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Date.valueOf 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Error 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Error.Error 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Error.message 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Error.name 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Error.stack Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Error.toString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.EvalError 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.EvalError.EvalError 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Float32Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Float32Array.Float32Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Float64Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Float64Array.Float64Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Function 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Function.Function 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Function.apply 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Function.apply.generic_arrays_as_arguments Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Function.arguments Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Function.bind 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Function.call 📋Safari6/23/2003 Edge7/29/20154419
Node.js: When calling this method, thisArg does not default to the global object.
javascript.builtins.Function.caller Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Function.length 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Function.toString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Infinity 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Int16Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Int16Array.Int16Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Int32Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Int32Array.Int32Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Int8Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Int8Array.Int8Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.JSON 📋Safari6/8/2009 Edge7/29/20152242
javascript.builtins.JSON.parse 📋Safari6/8/2009 Edge7/29/20152242
javascript.builtins.JSON.stringify 📋Safari6/8/2009 Edge7/29/20152242
javascript.builtins.Map 📋Firefox6/5/2012 Edge7/29/20151149
javascript.builtins.Map.Map 📋Firefox6/5/2012 Edge7/29/20151149
javascript.builtins.Map.clear 📋Firefox2/19/2013 Edge7/29/2015890
javascript.builtins.Map.delete 📋Firefox6/5/2012 Edge7/29/20151149
javascript.builtins.Map.entries 📋Firefox4/2/2013 Edge7/29/2015848
javascript.builtins.Map.forEach 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Map.get 📋Firefox6/5/2012 Edge7/29/20151149
javascript.builtins.Map.has 📋Firefox6/5/2012 Edge7/29/20151149
javascript.builtins.Map.keys 📋Firefox4/2/2013 Edge7/29/2015848
javascript.builtins.Map.set 📋Firefox6/5/2012 Edge7/29/20151149
Internet Explorer: Returns 'undefined' instead of the 'Map' object.
javascript.builtins.Map.size 📋Firefox2/19/2013 Edge7/29/2015890
Firefox: From Firefox 13 to Firefox 18, the size property was implemented as a Map.prototype.size() method, this has been changed to a property in later versions conform to the ECMAScript 2015 specification.Firefox for Android: From Firefox for Android 14 to Firefox for Android 18, the size property was implemented as a Map.prototype.size() method, this has been changed to a property in later versions conform to the ECMAScript 2015 specification.
javascript.builtins.Map.values 📋Firefox4/2/2013 Edge7/29/2015848
javascript.builtins.Math 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.E 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.LN10 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.LN2 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.LOG10E 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.LOG2E 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.PI 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.SQRT1_2 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.SQRT2 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.abs 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.acos 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.acosh 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Math.asin 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.asinh 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Math.atan 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.atan2 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.atanh 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Math.cbrt 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Math.ceil 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.clz32 📋Safari10/22/2013 Edge7/29/2015645
javascript.builtins.Math.cos 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.cosh 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Math.exp 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.expm1 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Math.floor 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.fround 📋Firefox12/10/2013 Edge7/29/2015596
javascript.builtins.Math.hypot 📋Firefox2/4/2014 Edge7/29/2015540
javascript.builtins.Math.imul 📋Firefox4/2/2013 Edge7/29/2015848
javascript.builtins.Math.log 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.log10 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Math.log1p 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Math.log2 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Math.max 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.min 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.pow 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.random 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.round 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.sin 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.sinh 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Math.sqrt 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.tan 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Math.tanh 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Math.trunc 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.NaN 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Number 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Number.MAX_VALUE 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Number.MIN_VALUE 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Number.NEGATIVE_INFINITY 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Number.NaN 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Number.Number 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Number.POSITIVE_INFINITY 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Number.toExponential 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Number.toFixed 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Number.toLocaleString 📋Safari6/23/2003 Edge7/29/20154419
Edge: Before Edge 18, numbers are rounded to 15 decimal digits. For example, (1000000000000005).toLocaleString('en-US') returns "1,000,000,000,000,010".Internet Explorer: In Internet Explorer 11, numbers are rounded to 15 decimal digits. For example, (1000000000000005).toLocaleString('en-US') returns "1,000,000,000,000,010".
javascript.builtins.Number.toPrecision 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Number.toString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Number.valueOf 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Object 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Object.Object 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Object.constructor 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Object.create 📋Safari6/7/2010 Edge7/29/20151878
javascript.builtins.Object.defineGetter 📋Firefox11/9/2004 Edge7/29/20153914
Firefox: Starting with Firefox 48, this method can no longer be called at the global scope without any object. A TypeError will be thrown otherwise. Previously, the global object was used in these cases automatically, but this is no longer the case.
javascript.builtins.Object.defineProperties 📋Safari6/7/2010 Edge7/29/20151878
javascript.builtins.Object.defineProperty 📋Firefox3/22/2011 Edge7/29/20151590
Internet Explorer: In Internet Explorer 8, this was only supported on DOM objects and with some non-standard behaviors. This was later fixed in Internet Explorer 9.Safari: Also supported in Safari 5, but not on DOM objects.Safari on iOS: Also supported in Safari for iOS 4.2, but not on DOM objects.WebView on iOS: Also supported in Safari for iOS 4.2, but not on DOM objects.
javascript.builtins.Object.defineSetter 📋Firefox11/9/2004 Edge7/29/20153914
Firefox: Starting with Firefox 48, this method can no longer be called at the global scope without any object. A TypeError will be thrown otherwise. Previously, the global object was used in these cases automatically, but this is no longer the case.
javascript.builtins.Object.freeze 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Object.getOwnPropertyDescriptor 📋Safari6/7/2010 Edge7/29/20151878
Internet Explorer: In Internet Explorer 8, this was only supported on DOM objects and with some non-standard behaviors. This was later fixed in Internet Explorer 9.
javascript.builtins.Object.getOwnPropertyNames 📋Safari6/7/2010 Edge7/29/20151878
javascript.builtins.Object.getPrototypeOf 📋Firefox6/30/2009 Edge7/29/20152220
javascript.builtins.Object.hasOwnProperty 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Object.isExtensible 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Object.isFrozen 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Object.isPrototypeOf 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Object.isSealed 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Object.keys 📋Safari6/7/2010 Edge7/29/20151878
javascript.builtins.Object.lookupGetter 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Object.lookupSetter 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Object.preventExtensions 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Object.propertyIsEnumerable 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Object.proto 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.Object.seal 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Object.toLocaleString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Object.toString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Object.valueOf 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Promise 📋Firefox4/29/2014 Edge7/29/2015456
javascript.builtins.Promise.Promise 📋Firefox4/29/2014 Edge7/29/2015456
Firefox: Constructor requires a new operator since version 37.Firefox for Android: Constructor requires a new operator since version 37.Node.js: Constructor requires a new operator since version 4.Safari: Constructor requires a new operator since version 10.Safari on iOS: Constructor requires a new operator since version 10.WebView on iOS: Constructor requires a new operator since version 10.
javascript.builtins.Promise.all 📋Firefox4/29/2014 Edge7/29/2015456
javascript.builtins.Promise.catch 📋Firefox4/29/2014 Edge7/29/2015456
javascript.builtins.Promise.race 📋Firefox4/29/2014 Edge7/29/2015456
javascript.builtins.Promise.reject 📋Firefox4/29/2014 Edge7/29/2015456
javascript.builtins.Promise.resolve 📋Firefox4/29/2014 Edge7/29/2015456
javascript.builtins.Promise.then 📋Firefox4/29/2014 Edge7/29/2015456
javascript.builtins.RangeError 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.RangeError.RangeError 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.ReferenceError 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.ReferenceError.ReferenceError 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.RegExp 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.RegExp.RegExp 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.RegExp.compile 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.RegExp.exec 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.RegExp.global 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.RegExp.global.prototype_accessor Safari4/15/2005 Edge7/29/20153757
javascript.builtins.RegExp.ignoreCase 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.RegExp.ignoreCase.prototype_accessor Safari4/15/2005 Edge7/29/20153757
javascript.builtins.RegExp.input 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.RegExp.lastIndex 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.RegExp.lastMatch 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.RegExp.lastParen 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.RegExp.leftContext 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.RegExp.multiline 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.RegExp.multiline.prototype_accessor Safari4/15/2005 Edge7/29/20153757
javascript.builtins.RegExp.n 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.RegExp.rightContext 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.RegExp.source 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.RegExp.source.empty_regex_string Safari6/7/2010 Edge7/29/20151878
javascript.builtins.RegExp.source.escaping Safari7/25/2012 Edge7/29/20151099
javascript.builtins.RegExp.test 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.RegExp.toString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.RegExp.toString.escaping Safari7/25/2012 Edge7/29/20151099
javascript.builtins.Set 📋Firefox6/5/2012 Edge7/29/20151149
javascript.builtins.Set.Set 📋Firefox6/5/2012 Edge7/29/20151149
javascript.builtins.Set.add 📋Firefox6/5/2012 Edge7/29/20151149
Internet Explorer: Returns 'undefined' instead of the 'Set' object.
javascript.builtins.Set.clear 📋Firefox2/19/2013 Edge7/29/2015890
javascript.builtins.Set.delete 📋Firefox6/5/2012 Edge7/29/20151149
javascript.builtins.Set.entries 📋Firefox9/17/2013 Edge7/29/2015680
javascript.builtins.Set.forEach 📋Firefox10/29/2013 Edge7/29/2015638
javascript.builtins.Set.has 📋Firefox6/5/2012 Edge7/29/20151149
javascript.builtins.Set.keys 📋Firefox9/17/2013 Edge7/29/2015680
javascript.builtins.Set.size 📋Firefox2/19/2013 Edge7/29/2015890
Firefox: From Firefox 13 to Firefox 18, the size property was implemented as a Set.prototype.size() method, this has been changed to a property in later versions conform to the ECMAScript 2015 specification.Firefox for Android: From Firefox for Android 14 to Firefox for Android 18, the size property was implemented as a Set.prototype.size() method, this has been changed to a property in later versions conform to the ECMAScript 2015 specification.
javascript.builtins.Set.values 📋Firefox9/17/2013 Edge7/29/2015680
javascript.builtins.String 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.String 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.anchor 📋Safari6/23/2003 Edge7/29/20154419
Firefox: Starting with version 17, the quotation mark (") is replaced by its HTML reference character (") in strings supplied for the name parameter.
javascript.builtins.String.big 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.blink 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.bold 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.charAt 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.charCodeAt 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.concat 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.fixed 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.fontcolor 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.fontsize 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.fromCharCode 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.indexOf 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.italics 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.lastIndexOf 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.length 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.link 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.localeCompare 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.String.match 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.replace 📋Safari6/23/2003 Edge7/29/20154419
Internet Explorer: A replacement function as second argument is not supported.
javascript.builtins.String.search 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.slice 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.small 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.split 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.strike 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.sub 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.substr 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.substring 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.sup 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.toLocaleLowerCase 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.String.toLocaleUpperCase 📋Firefox11/9/2004 Edge7/29/20153914
javascript.builtins.String.toLowerCase 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.toString 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.toUpperCase 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.String.trim 📋Firefox6/30/2009 Edge7/29/20152220
javascript.builtins.String.valueOf 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.SyntaxError 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.SyntaxError.SyntaxError 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.TypeError 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.TypeError.TypeError 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.TypedArray 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.TypedArray.BYTES_PER_ELEMENT 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.TypedArray.buffer 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.TypedArray.byteLength 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.TypedArray.byteOffset 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.TypedArray.index_properties_not_consulting_prototype Safari7/20/2011 Edge7/29/20151470
Bun: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Chrome: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Chrome Android: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Deno: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Edge: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Internet Explorer: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Node.js: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Quest Browser: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Opera: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Opera Android: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Safari: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Safari on iOS: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.Samsung Internet: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.WebView Android: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.WebView on iOS: Negative integers are not considered as indexed properties and therefore return the value of the prototype property.
javascript.builtins.TypedArray.length 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.TypedArray.name 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.TypedArray.named_properties Safari7/20/2011 Edge7/29/20151470
javascript.builtins.TypedArray.set 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.TypedArray.subarray 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.URIError 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.URIError.URIError 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.Uint16Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Uint16Array.Uint16Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Uint32Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Uint32Array.Uint32Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Uint8Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Uint8Array.Uint8Array 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Uint8ClampedArray 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.Uint8ClampedArray.Uint8ClampedArray 📋Firefox3/22/2011 Edge7/29/20151590
javascript.builtins.WeakMap 📋Firefox8/16/2011 Edge7/29/20151443
javascript.builtins.WeakMap.WeakMap 📋Firefox8/16/2011 Edge7/29/20151443
javascript.builtins.WeakMap.WeakMap.null_allowed Safari10/16/2014 Edge7/29/2015286
javascript.builtins.WeakMap.delete 📋Firefox8/16/2011 Edge7/29/20151443
Firefox: Before Firefox 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard.Firefox for Android: Before Firefox for Android 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard.
javascript.builtins.WeakMap.get 📋Firefox8/16/2011 Edge7/29/20151443
Firefox: Before Firefox 38, this method threw a TypeError when the key parameter was not an object. However, the ES2015 specification specifies to return undefined instead. Furthermore, WeakMap.prototype.get accepted an optional second argument as a fallback value, which is not part of the standard. Both non-standard behaviors are removed in version 38 and higher.Firefox for Android: Before Firefox for Android 38, this method threw a TypeError when the key parameter was not an object. However, the ES2015 specification specifies to return undefined instead. Furthermore, WeakMap.prototype.get accepted an optional second argument as a fallback value, which is not part of the standard. Both non-standard behaviors are removed in version 38 and higher.
javascript.builtins.WeakMap.has 📋Firefox8/16/2011 Edge7/29/20151443
Firefox: Before Firefox 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard.Firefox for Android: Before Firefox for Android 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard.
javascript.builtins.WeakMap.set 📋Firefox8/16/2011 Edge7/29/20151443
Firefox: Before Firefox 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard.Firefox for Android: Before Firefox for Android 38, this method threw a TypeError when the key parameter was not an object. This has been fixed in version 38 and later to return false as per the ES2015 standard.Internet Explorer: Returns 'undefined' instead of the 'Map' object.
javascript.builtins.decodeURI 📋Safari10/24/2003 Edge7/29/20154296
javascript.builtins.decodeURIComponent 📋Safari10/24/2003 Edge7/29/20154296
javascript.builtins.encodeURI 📋Safari10/24/2003 Edge7/29/20154296
javascript.builtins.encodeURIComponent 📋Safari10/24/2003 Edge7/29/20154296
javascript.builtins.escape 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.eval 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.isFinite 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.isNaN 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.parseFloat 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.parseInt 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.parseInt.leading_zero_strings_as_decimal Safari7/25/2012 Edge7/29/20151099
javascript.builtins.undefined 📋Safari6/23/2003 Edge7/29/20154419
javascript.builtins.unescape 📋Safari6/23/2003 Edge7/29/20154419
javascript.functions 📋Safari6/23/2003 Edge7/29/20154419
javascript.functions.arguments 📋Safari6/23/2003 Edge7/29/20154419
javascript.functions.arguments.callee 📋Safari6/23/2003 Edge7/29/20154419
javascript.functions.arguments.length 📋Safari6/23/2003 Edge7/29/20154419
javascript.functions.get 📋Firefox11/29/2005 Edge7/29/20153529
javascript.functions.set 📋Firefox11/29/2005 Edge7/29/20153529
javascript.grammar.array_literals 📋Safari6/23/2003 Edge7/29/20154419
javascript.grammar.boolean_literals 📋Safari6/23/2003 Edge7/29/20154419
javascript.grammar.decimal_numeric_literals 📋Safari6/23/2003 Edge7/29/20154419
javascript.grammar.hexadecimal_escape_sequences 📋Safari6/23/2003 Edge7/29/20154419
javascript.grammar.hexadecimal_numeric_literals 📋Safari6/23/2003 Edge7/29/20154419
javascript.grammar.null_literal 📋Safari6/23/2003 Edge7/29/20154419
javascript.grammar.regular_expression_literals 📋Safari6/23/2003 Edge7/29/20154419
javascript.grammar.string_literals 📋Safari6/23/2003 Edge7/29/20154419
javascript.grammar.trailing_commas 📋Safari6/23/2003 Edge7/29/20154419
javascript.grammar.trailing_commas.trailing_commas_in_object_literals Firefox11/9/2004 Edge7/29/20153914
javascript.grammar.unicode_escape_sequences 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.addition 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.addition_assignment 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.assignment 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.bitwise_and 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.bitwise_and_assignment 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.bitwise_not 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.bitwise_or 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.bitwise_or_assignment 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.bitwise_xor 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.bitwise_xor_assignment 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.comma 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.conditional 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.decrement 📋Firefox11/9/2004 Edge7/29/20153914
javascript.operators.delete 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.division 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.division_assignment 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.equality 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.function 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.greater_than 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.greater_than_or_equal 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.grouping 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.in 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.increment 📋Firefox11/9/2004 Edge7/29/20153914
javascript.operators.inequality 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.instanceof 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.left_shift 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.left_shift_assignment 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.less_than 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.less_than_or_equal 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.logical_and 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.logical_not 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.logical_or 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.multiplication 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.multiplication_assignment 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.new 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.null 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.object_initializer 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.object_initializer.computed_property_names Safari10/16/2014 Edge7/29/2015286
javascript.operators.property_accessors 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.remainder 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.remainder_assignment 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.right_shift 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.right_shift_assignment 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.spread 📋Firefox10/9/2012 Edge7/29/20151023
javascript.operators.spread.spread_in_arrays 📋Firefox10/9/2012 Edge7/29/20151023
javascript.operators.spread.spread_in_function_calls 📋Firefox2/4/2014 Edge7/29/2015540
javascript.operators.strict_equality 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.strict_inequality 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.subtraction 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.subtraction_assignment 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.this 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.typeof 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.unary_negation 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.unary_plus 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.unsigned_right_shift 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.unsigned_right_shift_assignment 📋Safari6/23/2003 Edge7/29/20154419
javascript.operators.void 📋Firefox11/9/2004 Edge7/29/20153914
javascript.regular_expressions.backreference 📋Safari6/23/2003 Edge7/29/20154419
javascript.regular_expressions.capturing_group 📋Safari6/23/2003 Edge7/29/20154419
javascript.regular_expressions.character_class 📋Safari6/23/2003 Edge7/29/20154419
javascript.regular_expressions.character_class_escape 📋Safari6/23/2003 Edge7/29/20154419
javascript.regular_expressions.character_escape 📋Safari6/23/2003 Edge7/29/20154419
javascript.regular_expressions.disjunction 📋Safari6/23/2003 Edge7/29/20154419
javascript.regular_expressions.input_boundary_assertion 📋Safari6/23/2003 Edge7/29/20154419
javascript.regular_expressions.literal_character 📋Safari6/23/2003 Edge7/29/20154419
javascript.regular_expressions.lookahead_assertion 📋Safari6/23/2003 Edge7/29/20154419
javascript.regular_expressions.non_capturing_group 📋Safari6/23/2003 Edge7/29/20154419
javascript.regular_expressions.quantifier 📋Safari6/23/2003 Edge7/29/20154419
javascript.regular_expressions.wildcard 📋Safari6/23/2003 Edge7/29/20154419
javascript.regular_expressions.word_boundary_assertion 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.block 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.break 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.const 📋Safari7/20/2011 Edge7/29/20151470
Firefox: Before Firefox 13, const is implemented, but re-assignment is not failing.Firefox: Before Firefox 46, a TypeError was thrown on redeclaration instead of a SyntaxError.Firefox for Android: Before Firefox for Android 14, const is implemented, but re-assignment is not failing.Firefox for Android: Before Firefox for Android 46, a TypeError was thrown on redeclaration instead of a SyntaxError.
javascript.statements.continue 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.debugger 📋Firefox11/9/2004 Edge7/29/20153914
javascript.statements.do_while 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.empty 📋Firefox11/9/2004 Edge7/29/20153914
javascript.statements.for 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.for_in 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.for_of 📋Firefox6/5/2012 Edge7/29/20151149
Firefox: Before Firefox 51, using the for...of loop construct with the const keyword threw a SyntaxError ("missing = in const declaration").Firefox for Android: Before Firefox for Android 51, using the for...of loop construct with the const keyword threw a SyntaxError ("missing = in const declaration").
javascript.statements.function 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.if_else 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.label 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.return 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.switch 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.throw 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.try_catch 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.var 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.while 📋Safari6/23/2003 Edge7/29/20154419
javascript.statements.with 📋Safari6/23/2003 Edge7/29/20154419