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 and Safari, 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 Safari9/15/2025 Firefox3/24/2026190

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 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedHTML.toJSON 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedHTML.toString 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedScript 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedScript.toJSON 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedScript.toString 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedScriptURL 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedScriptURL.toJSON 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedScriptURL.toString 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicy 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicy.createHTML 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicy.createScript 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicy.createScriptURL 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicy.name 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicyFactory 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicyFactory.createPolicy 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicyFactory.defaultPolicy 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicyFactory.emptyHTML 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicyFactory.emptyScript 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicyFactory.getAttributeType 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicyFactory.getPropertyType 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicyFactory.isHTML 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicyFactory.isScript 📋Safari9/15/2025 Firefox2/24/2026162
api.TrustedTypePolicyFactory.isScriptURL 📋Safari9/15/2025 Firefox2/24/2026162
api.trustedTypes 📋Safari9/15/2025 Firefox2/24/2026162

2026/1

API First Browser Date Last Browser Date Days Notes
api.CSSPositionTryDescriptors 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.align-self 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.alignSelf 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.block-size 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.blockSize 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.bottom 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.height 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.inline-size 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.inlineSize 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.inset 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.inset-block 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.inset-block-end 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.inset-block-start 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.inset-inline 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.inset-inline-end 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.inset-inline-start 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.insetBlock 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.insetBlockEnd 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.insetBlockStart 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.insetInline 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.insetInlineEnd 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.insetInlineStart 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.justify-self 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.justifySelf 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.left 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.margin 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.margin-block 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.margin-block-end 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.margin-block-start 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.margin-bottom 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.margin-inline 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.margin-inline-end 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.margin-inline-start 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.margin-left 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.margin-right 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.margin-top 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.marginBlock 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.marginBlockEnd 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.marginBlockStart 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.marginBottom 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.marginInline 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.marginInlineEnd 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.marginInlineStart 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.marginLeft 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.marginRight 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.marginTop 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.max-block-size 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.max-height 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.max-inline-size 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.max-width 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.maxBlockSize 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.maxHeight 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.maxInlineSize 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.maxWidth 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.min-block-size 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.min-height 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.min-inline-size 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.min-width 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.minBlockSize 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.minHeight 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.minInlineSize 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.minWidth 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.place-self 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.placeSelf 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.position-anchor 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.position-area 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.positionAnchor 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.positionArea 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.right 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.top 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryDescriptors.width 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryRule 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryRule.name 📋Safari9/15/2025 Firefox1/13/2026120
api.CSSPositionTryRule.style 📋Safari9/15/2025 Firefox1/13/2026120
api.CompressionStream.CompressionStream.brotli Safari3/31/2025 Firefox1/13/2026288
api.DecompressionStream.DecompressionStream.brotli Safari3/31/2025 Firefox1/13/2026288
api.Document.activeViewTransition 📋Safari12/12/2025 Firefox1/13/202632
api.Document.startViewTransition.options_parameter 📋Safari12/11/2024 Firefox1/13/2026398
api.Document.startViewTransition.options_parameter.types_parameter 📋Safari12/11/2024 Firefox1/13/2026398
api.Document.startViewTransition.options_parameter.update_parameter 📋Safari12/11/2024 Firefox1/13/2026398
api.HTMLButtonElement.commandForElement.implicit_anchor_reference 📋Safari12/12/2025 Firefox1/13/202632
api.HTMLButtonElement.popoverTargetElement.implicit_anchor_reference 📋Safari9/15/2025 Firefox1/13/2026120
api.HTMLElement.showPopover.options_source_parameter.implicit_anchor_reference 📋Safari9/15/2025 Firefox1/13/2026120
api.HTMLElement.togglePopover.options_source_parameter.implicit_anchor_reference 📋Safari9/15/2025 Firefox1/13/2026120
api.HTMLInputElement.popoverTargetElement.implicit_anchor_reference 📋Safari9/15/2025 Firefox1/13/2026120
api.NavigateEvent 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.NavigateEvent 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.canIntercept 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.destination 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.downloadRequest 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.formData 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.hasUAVisualTransition 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.hashChange 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.info 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.intercept 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.navigationType 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.scroll 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.signal 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.sourceElement 📋Safari12/12/2025 Firefox1/13/202632
api.NavigateEvent.userInitiated 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.activation 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.back 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.canGoBack 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.canGoForward 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.currentEntry 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.currententrychange_event 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.entries 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.forward 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.navigate 📋Safari12/12/2025 Firefox1/13/202632
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 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.navigateerror_event 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.navigatesuccess_event 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.reload 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.transition 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.traverseTo 📋Safari12/12/2025 Firefox1/13/202632
api.Navigation.updateCurrentEntry 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationActivation 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationActivation.entry 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationActivation.from 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationActivation.navigationType 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationCurrentEntryChangeEvent 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationCurrentEntryChangeEvent.NavigationCurrentEntryChangeEvent 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationCurrentEntryChangeEvent.from 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationCurrentEntryChangeEvent.navigationType 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationDestination 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationDestination.getState 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationDestination.id 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationDestination.index 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationDestination.key 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationDestination.sameDocument 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationDestination.url 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationHistoryEntry 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationHistoryEntry.dispose_event 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationHistoryEntry.getState 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationHistoryEntry.id 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationHistoryEntry.index 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationHistoryEntry.key 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationHistoryEntry.sameDocument 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationHistoryEntry.url 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationTransition 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationTransition.finished 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationTransition.from 📋Safari12/12/2025 Firefox1/13/202632
api.NavigationTransition.navigationType 📋Safari12/12/2025 Firefox1/13/202632
api.ServiceWorker.ecmascript_modules Safari9/20/2021 Firefox1/13/20261576
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 📋Safari12/11/2024 Firefox1/13/2026398
api.ViewTransitionTypeSet 📋Safari12/11/2024 Firefox1/13/2026398
api.ViewTransitionTypeSet.@@iterator Safari12/11/2024 Firefox1/13/2026398
api.ViewTransitionTypeSet.add Safari12/11/2024 Firefox1/13/2026398
api.ViewTransitionTypeSet.clear Safari12/11/2024 Firefox1/13/2026398
api.ViewTransitionTypeSet.delete Safari12/11/2024 Firefox1/13/2026398
api.ViewTransitionTypeSet.entries Safari12/11/2024 Firefox1/13/2026398
api.ViewTransitionTypeSet.forEach Safari12/11/2024 Firefox1/13/2026398
api.ViewTransitionTypeSet.has Safari12/11/2024 Firefox1/13/2026398
api.ViewTransitionTypeSet.keys Safari12/11/2024 Firefox1/13/2026398
api.ViewTransitionTypeSet.size Safari12/11/2024 Firefox1/13/2026398
api.ViewTransitionTypeSet.values Safari12/11/2024 Firefox1/13/2026398
api.Window.navigation 📋Safari12/12/2025 Firefox1/13/202632

2025/12

API First Browser Date Last Browser Date Days Notes
api.Animation.overallProgress 📋Firefox8/19/2025 Safari12/12/2025115
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 📋Firefox10/14/2025 Safari12/12/202559
api.CommandEvent.CommandEvent Firefox10/14/2025 Safari12/12/202559
api.CommandEvent.command 📋Firefox10/14/2025 Safari12/12/202559
api.CommandEvent.source 📋Firefox10/14/2025 Safari12/12/202559
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 📋Firefox5/27/2025 Safari12/12/2025199
api.Element.scrollend_event 📋Firefox1/17/2023 Safari12/12/20251060
api.EventCounts 📋Firefox6/1/2021 Safari12/12/20251655
api.EventCounts.@@iterator Firefox6/1/2021 Safari12/12/20251655
api.EventCounts.entries Firefox6/1/2021 Safari12/12/20251655
api.EventCounts.forEach Firefox6/1/2021 Safari12/12/20251655
api.EventCounts.get Firefox6/1/2021 Safari12/12/20251655
api.EventCounts.has Firefox6/1/2021 Safari12/12/20251655
api.EventCounts.keys Firefox6/1/2021 Safari12/12/20251655
api.EventCounts.size Firefox6/1/2021 Safari12/12/20251655
api.EventCounts.values Firefox6/1/2021 Safari12/12/20251655
api.HTMLButtonElement.command 📋Firefox10/14/2025 Safari12/12/202559
api.HTMLButtonElement.command.request-close 📋Firefox10/14/2025 Safari12/12/202559
api.HTMLButtonElement.commandForElement 📋Firefox10/14/2025 Safari12/12/202559
api.HTMLElement.command_event 📋Firefox10/14/2025 Safari12/12/202559
api.LargestContentfulPaint 📋Firefox1/23/2024 Safari12/12/2025689
api.LargestContentfulPaint.element 📋Firefox1/23/2024 Safari12/12/2025689
api.LargestContentfulPaint.id 📋Firefox1/23/2024 Safari12/12/2025689
api.LargestContentfulPaint.loadTime 📋Firefox1/23/2024 Safari12/12/2025689
api.LargestContentfulPaint.paintTime 📋Firefox6/24/2025 Safari12/12/2025171
api.LargestContentfulPaint.presentationTime 📋Firefox6/24/2025 Safari12/12/2025171
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.
api.LargestContentfulPaint.renderTime 📋Firefox1/23/2024 Safari12/12/2025689
api.LargestContentfulPaint.renderTime.cross-origin Firefox7/22/2025 Safari12/12/2025143
api.LargestContentfulPaint.size 📋Firefox1/23/2024 Safari12/12/2025689
api.LargestContentfulPaint.toJSON 📋Firefox1/23/2024 Safari12/12/2025689
api.LargestContentfulPaint.url 📋Firefox1/23/2024 Safari12/12/2025689
api.Performance.eventCounts 📋Firefox6/1/2021 Safari12/12/20251655
api.Performance.interactionCount 📋Firefox10/14/2025 Safari12/12/202559
api.PerformanceEventTiming 📋Firefox6/1/2021 Safari12/12/20251655
api.PerformanceEventTiming.cancelable 📋Firefox6/1/2021 Safari12/12/20251655
api.PerformanceEventTiming.interactionId 📋Firefox10/14/2025 Safari12/12/202559
api.PerformanceEventTiming.processingEnd 📋Firefox6/1/2021 Safari12/12/20251655
api.PerformanceEventTiming.processingStart 📋Firefox6/1/2021 Safari12/12/20251655
api.PerformanceEventTiming.target 📋Firefox6/1/2021 Safari12/12/20251655
api.PerformanceEventTiming.toJSON 📋Firefox6/1/2021 Safari12/12/20251655
api.Permissions.permission_storage-access 📋Firefox8/29/2023 Safari12/12/2025836
api.PointerEvent.pointerType.fractional_coordinates Firefox2/4/2025 Safari12/12/2025311
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.SVGAElement.hreflang 📋Firefox6/26/2018 Safari12/12/20252726
api.SVGAElement.type 📋Firefox6/26/2018 Safari12/12/20252726
api.SVGAnimationElement.beginEvent_event 📋Firefox10/5/2021 Safari12/12/20251529
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 📋Firefox10/5/2021 Safari12/12/20251529
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 📋Safari3/5/2024 Firefox12/9/2025644
api.CSSScopeRule.end 📋Safari3/5/2024 Firefox12/9/2025644
api.CSSScopeRule.start 📋Safari3/5/2024 Firefox12/9/2025644

2025/11

API First Browser Date Last Browser Date Days Notes
api.CSSStyleRule.style.returns_CSSStyleProperties 📋Safari9/15/2025 Firefox11/11/202557
api.HTMLElement.style.returns_CSSStyleProperties 📋Safari9/15/2025 Firefox11/11/202557
api.MathMLElement.style.returns_CSSStyleProperties 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedAudioFrame.RTCEncodedAudioFrame 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedAudioFrame.RTCEncodedAudioFrame.options_metadata_contributingSources_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedAudioFrame.RTCEncodedAudioFrame.options_metadata_payloadType_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedAudioFrame.RTCEncodedAudioFrame.options_metadata_rtpTimestamp_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedAudioFrame.RTCEncodedAudioFrame.options_metadata_sequenceNumber_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedAudioFrame.RTCEncodedAudioFrame.options_metadata_synchronizationSource_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedAudioFrame.getMetadata.return_object_property_contributingSources 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedAudioFrame.getMetadata.return_object_property_payloadType 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedAudioFrame.getMetadata.return_object_property_rtpTimestamp 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedAudioFrame.getMetadata.return_object_property_sequenceNumber 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedAudioFrame.getMetadata.return_object_property_synchronizationSource 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_contributingSources_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_dependencies_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_frameId_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_height_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_payloadType_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_spatialIndex_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_synchronizationSource_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_temporalIndex_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.RTCEncodedVideoFrame.options_metadata_width_parameter 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.getMetadata.return_object_property_contributingSources 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.getMetadata.return_object_property_dependencies 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.getMetadata.return_object_property_frameId 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.getMetadata.return_object_property_height 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.getMetadata.return_object_property_payloadType 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.getMetadata.return_object_property_spatialIndex 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.getMetadata.return_object_property_synchronizationSource 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.getMetadata.return_object_property_temporalIndex 📋Safari9/15/2025 Firefox11/11/202557
api.RTCEncodedVideoFrame.getMetadata.return_object_property_width 📋Safari9/15/2025 Firefox11/11/202557
api.SVGElement.style.returns_CSSStyleProperties 📋Safari9/15/2025 Firefox11/11/202557
api.Window.getComputedStyle.returns_CSSStyleProperties 📋Safari9/15/2025 Firefox11/11/202557

2025/10

API First Browser Date Last Browser Date Days Notes
api.CSSStyleProperties 📋Safari9/15/2025 Firefox10/14/202529
api.CSSStyleProperties.cssFloat 📋Safari9/15/2025 Firefox10/14/202529
api.Document.startViewTransition 📋Safari9/16/2024 Firefox10/14/2025393
api.GPUDevice.importExternalTexture 📋Safari9/15/2025 Firefox10/14/202529
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 Safari9/15/2025 Firefox10/14/202529
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 📋Safari9/15/2025 Firefox10/14/202529
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 📋Safari9/15/2025 Firefox10/14/202529
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 📋Safari3/14/2022 Firefox10/14/20251310
api.RTCDataChannel.transferable 📋Safari9/20/2021 Firefox10/14/20251485
api.ViewTransition 📋Safari9/16/2024 Firefox10/14/2025393
api.ViewTransition.finished 📋Safari9/16/2024 Firefox10/14/2025393
api.ViewTransition.ready 📋Safari9/16/2024 Firefox10/14/2025393
api.ViewTransition.skipTransition 📋Safari9/16/2024 Firefox10/14/2025393
api.ViewTransition.updateCallbackDone 📋Safari9/16/2024 Firefox10/14/2025393

2025/9

API First Browser Date Last Browser Date Days Notes
api.SpeechRecognition.abort 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.audioend_event 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.audiostart_event 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.continuous 📋Safari4/26/2021 Firefox9/16/20251604
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 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.error_event 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.interimResults 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.lang 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.maxAlternatives 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.nomatch_event 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.result_event 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.soundend_event 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.soundstart_event 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.speechend_event 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.speechstart_event 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.start 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.start_event 📋Safari4/26/2021 Firefox9/16/20251604
api.SpeechRecognition.stop 📋Safari4/26/2021 Firefox9/16/20251604
api.AudioData 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioData.AudioData 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioData.allocationSize 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioData.clone 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioData.close 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioData.copyTo 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioData.duration 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioData.format 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioData.numberOfChannels 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioData.numberOfFrames 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioData.sampleRate 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioData.timestamp 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioDecoder 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioDecoder.AudioDecoder 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioDecoder.close 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioDecoder.configure 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioDecoder.decode 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioDecoder.decodeQueueSize 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioDecoder.dequeue_event 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioDecoder.flush 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioDecoder.isConfigSupported_static 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioDecoder.reset 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioDecoder.state 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioEncoder 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioEncoder.AudioEncoder 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioEncoder.close 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioEncoder.configure 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioEncoder.configure.bitrateMode 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioEncoder.configure.opus 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioEncoder.dequeue_event 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioEncoder.encode 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioEncoder.encodeQueueSize 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioEncoder.flush 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioEncoder.isConfigSupported_static 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioEncoder.reset 📋Firefox9/3/2024 Safari9/15/2025377
api.AudioEncoder.state 📋Firefox9/3/2024 Safari9/15/2025377
api.CSSPageDescriptors 📋Firefox8/6/2024 Safari9/15/2025405
api.CSSPageDescriptors.margin 📋Firefox8/6/2024 Safari9/15/2025405
api.CSSPageDescriptors.margin-bottom 📋Firefox8/6/2024 Safari9/15/2025405
api.CSSPageDescriptors.margin-left 📋Firefox8/6/2024 Safari9/15/2025405
api.CSSPageDescriptors.margin-right 📋Firefox8/6/2024 Safari9/15/2025405
api.CSSPageDescriptors.margin-top 📋Firefox8/6/2024 Safari9/15/2025405
api.CSSPageDescriptors.marginBottom 📋Firefox8/6/2024 Safari9/15/2025405
api.CSSPageDescriptors.marginLeft 📋Firefox8/6/2024 Safari9/15/2025405
api.CSSPageDescriptors.marginRight 📋Firefox8/6/2024 Safari9/15/2025405
api.CSSPageDescriptors.marginTop 📋Firefox8/6/2024 Safari9/15/2025405
api.CSSPageDescriptors.size 📋Firefox8/6/2024 Safari9/15/2025405
api.CSSPageRule.style.type_CSSPageDescriptors Firefox8/6/2024 Safari9/15/2025405
api.Document.parseHTMLUnsafe_static 📋Firefox7/9/2024 Safari9/15/2025433
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 📋Firefox9/3/2024 Safari9/15/2025377
api.EncodedAudioChunk.EncodedAudioChunk 📋Firefox9/3/2024 Safari9/15/2025377
api.EncodedAudioChunk.byteLength 📋Firefox9/3/2024 Safari9/15/2025377
api.EncodedAudioChunk.copyTo 📋Firefox9/3/2024 Safari9/15/2025377
api.EncodedAudioChunk.duration 📋Firefox9/3/2024 Safari9/15/2025377
api.EncodedAudioChunk.timestamp 📋Firefox9/3/2024 Safari9/15/2025377
api.EncodedAudioChunk.type 📋Firefox9/3/2024 Safari9/15/2025377
api.FileSystemFileHandle.createWritable 📋Firefox3/14/2023 Safari9/15/2025916
api.FileSystemWritableFileStream 📋Firefox3/14/2023 Safari9/15/2025916
api.FileSystemWritableFileStream.seek 📋Firefox3/14/2023 Safari9/15/2025916
api.FileSystemWritableFileStream.truncate 📋Firefox3/14/2023 Safari9/15/2025916
api.FileSystemWritableFileStream.write 📋Firefox3/14/2023 Safari9/15/2025916
api.GPU 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋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.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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋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: 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 📋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.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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋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: 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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 Firefox7/22/2025 Safari9/15/202555
api.Navigator.gpu 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox8/19/2025 Safari9/15/202527
api.URLPattern.URLPattern 📋Firefox8/19/2025 Safari9/15/202527
api.URLPattern.URLPattern.ignoreCase_option 📋Firefox8/19/2025 Safari9/15/202527
api.URLPattern.exec 📋Firefox8/19/2025 Safari9/15/202527
api.URLPattern.hasRegExpGroups 📋Firefox8/19/2025 Safari9/15/202527
api.URLPattern.hash 📋Firefox8/19/2025 Safari9/15/202527
api.URLPattern.hostname 📋Firefox8/19/2025 Safari9/15/202527
api.URLPattern.password 📋Firefox8/19/2025 Safari9/15/202527
api.URLPattern.pathname 📋Firefox8/19/2025 Safari9/15/202527
api.URLPattern.port 📋Firefox8/19/2025 Safari9/15/202527
api.URLPattern.protocol 📋Firefox8/19/2025 Safari9/15/202527
api.URLPattern.search 📋Firefox8/19/2025 Safari9/15/202527
api.URLPattern.test 📋Firefox8/19/2025 Safari9/15/202527
api.URLPattern.username 📋Firefox8/19/2025 Safari9/15/202527
api.WGSLLanguageFeatures 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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 📋Firefox7/22/2025 Safari9/15/202555
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.

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 📋Safari9/18/2023 Firefox7/22/2025673
api.HTMLElement.togglePopover.options_force_parameter 📋Safari3/31/2025 Firefox7/22/2025113

2025/6

API First Browser Date Last Browser Date Days Notes
api.CSS.highlights_static 📋Safari12/11/2023 Firefox6/24/2025561
api.CookieChangeEvent 📋Safari3/31/2025 Firefox6/24/202585
api.CookieChangeEvent.CookieChangeEvent 📋Safari3/31/2025 Firefox6/24/202585
api.CookieChangeEvent.changed 📋Safari3/31/2025 Firefox6/24/202585
api.CookieChangeEvent.deleted 📋Safari3/31/2025 Firefox6/24/202585
api.CookieStore 📋Safari3/31/2025 Firefox6/24/202585
api.CookieStore.change_event 📋Safari3/31/2025 Firefox6/24/202585
api.CookieStore.delete 📋Safari3/31/2025 Firefox6/24/202585
api.CookieStore.get 📋Safari3/31/2025 Firefox6/24/202585
api.CookieStore.get.name_return_property 📋Safari3/31/2025 Firefox6/24/202585
api.CookieStore.get.value_return_property 📋Safari3/31/2025 Firefox6/24/202585
api.CookieStore.getAll 📋Safari3/31/2025 Firefox6/24/202585
api.CookieStore.set 📋Safari3/31/2025 Firefox6/24/202585
api.ExtendableCookieChangeEvent 📋Safari3/31/2025 Firefox6/24/202585
api.ExtendableCookieChangeEvent.ExtendableCookieChangeEvent 📋Safari3/31/2025 Firefox6/24/202585
api.ExtendableCookieChangeEvent.changed 📋Safari3/31/2025 Firefox6/24/202585
api.ExtendableCookieChangeEvent.deleted 📋Safari3/31/2025 Firefox6/24/202585
api.Highlight 📋Safari12/11/2023 Firefox6/24/2025561
api.Highlight.@@iterator Safari12/11/2023 Firefox6/24/2025561
api.Highlight.Highlight 📋Safari12/11/2023 Firefox6/24/2025561
api.Highlight.add Safari12/11/2023 Firefox6/24/2025561
api.Highlight.clear Safari12/11/2023 Firefox6/24/2025561
api.Highlight.delete Safari12/11/2023 Firefox6/24/2025561
api.Highlight.entries Safari12/11/2023 Firefox6/24/2025561
api.Highlight.forEach Safari12/11/2023 Firefox6/24/2025561
api.Highlight.has Safari12/11/2023 Firefox6/24/2025561
api.Highlight.keys Safari12/11/2023 Firefox6/24/2025561
api.Highlight.priority 📋Safari12/11/2023 Firefox6/24/2025561
api.Highlight.size Safari12/11/2023 Firefox6/24/2025561
api.Highlight.type 📋Safari12/11/2023 Firefox6/24/2025561
api.Highlight.values Safari12/11/2023 Firefox6/24/2025561
api.HighlightRegistry 📋Safari12/11/2023 Firefox6/24/2025561
api.HighlightRegistry.@@iterator Safari12/11/2023 Firefox6/24/2025561
api.HighlightRegistry.clear Safari12/11/2023 Firefox6/24/2025561
api.HighlightRegistry.delete Safari12/11/2023 Firefox6/24/2025561
api.HighlightRegistry.entries Safari12/11/2023 Firefox6/24/2025561
api.HighlightRegistry.forEach Safari12/11/2023 Firefox6/24/2025561
api.HighlightRegistry.get Safari12/11/2023 Firefox6/24/2025561
api.HighlightRegistry.has Safari12/11/2023 Firefox6/24/2025561
api.HighlightRegistry.keys Safari12/11/2023 Firefox6/24/2025561
api.HighlightRegistry.set Safari12/11/2023 Firefox6/24/2025561
api.HighlightRegistry.size Safari12/11/2023 Firefox6/24/2025561
api.HighlightRegistry.values Safari12/11/2023 Firefox6/24/2025561
api.ServiceWorkerGlobalScope.cookieStore 📋Safari3/31/2025 Firefox6/24/202585
api.Window.cookieStore 📋Safari3/31/2025 Firefox6/24/202585

2025/5

API First Browser Date Last Browser Date Days Notes
api.CredentialsContainer.create.publicKey_option.extensions.largeBlob 📋Safari9/18/2023 Firefox5/27/2025617
api.CredentialsContainer.create.publicKey_option.extensions.prf 📋Safari9/16/2024 Firefox5/27/2025253
Firefox: Not supported on macOS.
api.HTMLDialogElement.requestClose 📋Safari3/31/2025 Firefox5/27/202557

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
api.PushSubscriptionChangeEvent 📋Safari9/12/2022 Firefox4/1/2025932
Firefox: Before Firefox 137, The pushsubscriptionchange event is fired, but does not have the oldSubscription and newSubscription properties. See bug 1635524.Firefox for Android: Before Firefox for Android 137, The pushsubscriptionchange event is fired, but does not have the oldSubscription and newSubscription properties. See bug 1635524.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.PushSubscriptionChangeEvent.PushSubscriptionChangeEvent 📋Safari10/24/2022 Firefox4/1/2025890
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.PushSubscriptionChangeEvent.newSubscription 📋Safari9/12/2022 Firefox4/1/2025932
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.PushSubscriptionChangeEvent.oldSubscription 📋Safari9/12/2022 Firefox4/1/2025932
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.

2025/3

API First Browser Date Last Browser Date Days Notes
api.AudioContext.outputLatency 📋Firefox10/22/2019 Safari3/31/20251987
api.CSPViolationReportBody 📋Firefox9/3/2024 Safari3/31/2025209
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 📋Firefox7/4/2023 Safari3/31/2025636
api.CanvasRenderingContext2D.wordSpacing 📋Firefox7/4/2023 Safari3/31/2025636
api.ClipboardItem.supports_static 📋Firefox6/11/2024 Safari3/31/2025293
api.Document.fragmentDirective 📋Firefox10/1/2024 Safari3/31/2025181
api.FragmentDirective 📋Firefox10/1/2024 Safari3/31/2025181
api.HTMLElement.focus.options_focusVisible_parameter Firefox8/23/2022 Safari3/31/2025951
api.HTMLMediaElement.setSinkId 📋Firefox8/1/2023 Safari3/31/2025608
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 📋Firefox8/1/2023 Safari3/31/2025608
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 📋Firefox9/20/2022 Safari3/31/2025923
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 📋Firefox7/4/2023 Safari3/31/2025636
api.OffscreenCanvasRenderingContext2D.wordSpacing 📋Firefox7/4/2023 Safari3/31/2025636
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
api.Element.ariaActiveDescendantElement 📋Safari3/27/2023 Firefox3/4/2025708
api.Element.ariaControlsElements 📋Safari3/27/2023 Firefox3/4/2025708
api.Element.ariaDescribedByElements 📋Safari3/27/2023 Firefox3/4/2025708
api.Element.ariaDetailsElements 📋Safari3/27/2023 Firefox3/4/2025708
api.Element.ariaErrorMessageElements 📋Safari3/27/2023 Firefox3/4/2025708
api.Element.ariaFlowToElements 📋Safari3/27/2023 Firefox3/4/2025708
api.Element.ariaLabelledByElements 📋Safari3/27/2023 Firefox3/4/2025708
api.Element.ariaOwnsElements 📋Safari3/27/2023 Firefox3/4/2025708
api.ElementInternals.ariaActiveDescendantElement 📋Safari3/27/2023 Firefox3/4/2025708
api.ElementInternals.ariaControlsElements 📋Safari3/27/2023 Firefox3/4/2025708
api.ElementInternals.ariaDescribedByElements 📋Safari3/27/2023 Firefox3/4/2025708
api.ElementInternals.ariaDetailsElements 📋Safari3/27/2023 Firefox3/4/2025708
api.ElementInternals.ariaErrorMessageElements 📋Safari3/27/2023 Firefox3/4/2025708
api.ElementInternals.ariaFlowToElements 📋Safari3/27/2023 Firefox3/4/2025708
api.ElementInternals.ariaLabelledByElements 📋Safari3/27/2023 Firefox3/4/2025708
api.ElementInternals.ariaOwnsElements 📋Safari3/27/2023 Firefox3/4/2025708
api.HTMLElement.autocorrect 📋Safari4/26/2021 Firefox3/4/20251408
api.HTMLElement.contentEditable.plaintext-only Safari7/20/2011 Firefox3/4/20254976

2025/2

API First Browser Date Last Browser Date Days Notes
api.PublicKeyCredential.getClientCapabilities_static 📋Safari3/5/2024 Firefox2/4/2025336
api.RTCStatsReport.type_inbound-rtp.mid 📋Safari9/18/2023 Firefox2/4/2025505

2025/1

API First Browser Date Last Browser Date Days Notes
api.PushManager.supportedContentEncodings_static 📋Safari9/12/2022 Firefox1/7/2025848
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.

2024/12

API First Browser Date Last Browser Date Days Notes
api.CSSNestedDeclarations 📋Firefox10/29/2024 Safari12/11/202443
api.CSSNestedDeclarations.style 📋Firefox10/29/2024 Safari12/11/202443
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 Firefox8/6/2024 Safari12/11/2024127
api.Element.click_event.type_pointerevent Firefox8/6/2024 Safari12/11/2024127
api.Element.contextmenu_event.type_pointerevent Firefox8/6/2024 Safari12/11/2024127
api.PointerEvent.PointerEvent.options_altitudeAngle_parameter Firefox10/1/2024 Safari12/11/202471
api.PointerEvent.PointerEvent.options_azimuthAngle_parameter Firefox10/1/2024 Safari12/11/202471
api.PointerEvent.altitudeAngle 📋Firefox10/1/2024 Safari12/11/202471
api.PointerEvent.azimuthAngle 📋Firefox10/1/2024 Safari12/11/202471
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 📋Firefox6/1/2021 Safari12/11/20241289

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 📋Safari9/19/2019 Firefox11/26/20241895
api.Request.keepalive 📋Safari9/19/2019 Firefox11/26/20241895
api.ServiceWorkerContainer.worker_support Safari4/12/2018 Firefox11/26/20242420
api.WorkerNavigator.permissions 📋Safari3/27/2023 Firefox11/26/2024610
api.WorkerNavigator.serviceWorker 📋Safari4/12/2018 Firefox11/26/20242420
api.fetch.init_keepalive_parameter Safari9/19/2019 Firefox11/26/20241895

2024/10

API First Browser Date Last Browser Date Days Notes
api.HTMLImageElement.fetchPriority 📋Safari12/11/2023 Firefox10/29/2024323
api.HTMLLinkElement.fetchPriority 📋Safari12/11/2023 Firefox10/29/2024323
api.HTMLScriptElement.fetchPriority 📋Safari12/11/2023 Firefox10/29/2024323
api.HTMLVideoElement.cancelVideoFrameCallback 📋Safari3/14/2022 Firefox10/29/2024960
api.HTMLVideoElement.requestVideoFrameCallback 📋Safari3/14/2022 Firefox10/29/2024960
api.MediaStreamTrack.getCapabilities 📋Safari9/19/2017 Firefox10/29/20242597
api.Notification.silent 📋Safari7/24/2023 Firefox10/29/2024463
api.Permissions.permission_camera Safari9/12/2022 Firefox10/29/2024778
api.Permissions.permission_microphone Safari9/12/2022 Firefox10/29/2024778
api.Request.Request.init_priority_parameter 📋Safari12/11/2023 Firefox10/29/2024323
api.WebGL2RenderingContext.drawingBufferColorSpace 📋Safari3/27/2023 Firefox10/29/2024582
Firefox: Accidental early exposure with no functionality.Firefox for Android: Accidental early exposure with no functionality.
api.WebGLRenderingContext.drawingBufferColorSpace 📋Safari3/27/2023 Firefox10/29/2024582
Firefox: Accidental early exposure with no functionality.Firefox for Android: Accidental early exposure with no functionality.
api.fetch.init_priority_parameter Safari12/11/2023 Firefox10/29/2024323

2024/9

API First Browser Date Last Browser Date Days Notes
api.Blob.bytes 📋Firefox7/9/2024 Safari9/16/202469
api.CanvasRenderingContext2D.filter 📋Firefox9/20/2016 Safari9/16/20242918
api.ContentVisibilityAutoStateChangeEvent 📋Firefox4/16/2024 Safari9/16/2024153
api.ContentVisibilityAutoStateChangeEvent.ContentVisibilityAutoStateChangeEvent 📋Firefox4/16/2024 Safari9/16/2024153
api.ContentVisibilityAutoStateChangeEvent.skipped 📋Firefox4/16/2024 Safari9/16/2024153
api.Element.ariaBrailleLabel 📋Firefox4/16/2024 Safari9/16/2024153
api.Element.ariaBrailleRoleDescription 📋Firefox4/16/2024 Safari9/16/2024153
api.Element.attachShadow.options_serializable_parameter 📋Firefox7/9/2024 Safari9/16/202469
api.Element.contentvisibilityautostatechange_event 📋Firefox9/3/2024 Safari9/16/202413
Firefox: The oncontentvisibilityautostatechange event handler property is not supported.Firefox for Android: The oncontentvisibilityautostatechange event handler property is not supported.
api.Element.getHTML 📋Firefox7/9/2024 Safari9/16/202469
api.ElementInternals.ariaBrailleLabel 📋Firefox4/16/2024 Safari9/16/2024153
api.ElementInternals.ariaBrailleRoleDescription 📋Firefox4/16/2024 Safari9/16/2024153
api.GeolocationCoordinates.toJSON 📋Firefox8/6/2024 Safari9/16/202441
api.GeolocationPosition.toJSON 📋Firefox8/6/2024 Safari9/16/202441
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 📋Firefox7/9/2024 Safari9/16/202469
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.PushMessageData.bytes 📋Firefox7/9/2024 Safari9/16/202469
api.Request.bytes 📋Firefox7/9/2024 Safari9/16/202469
api.Response.bytes 📋Firefox7/9/2024 Safari9/16/202469
api.ShadowRoot.getHTML 📋Firefox7/9/2024 Safari9/16/202469
api.ShadowRoot.serializable 📋Firefox7/9/2024 Safari9/16/202469
api.URL.parse_static 📋Firefox5/14/2024 Safari9/16/2024125
api.EncodedVideoChunk 📋Safari3/27/2023 Firefox9/3/2024526
api.EncodedVideoChunk.EncodedVideoChunk 📋Safari3/27/2023 Firefox9/3/2024526
api.EncodedVideoChunk.byteLength 📋Safari3/27/2023 Firefox9/3/2024526
api.EncodedVideoChunk.copyTo 📋Safari3/27/2023 Firefox9/3/2024526
api.EncodedVideoChunk.duration 📋Safari3/27/2023 Firefox9/3/2024526
api.EncodedVideoChunk.timestamp 📋Safari3/27/2023 Firefox9/3/2024526
api.EncodedVideoChunk.type 📋Safari3/27/2023 Firefox9/3/2024526
api.HTMLDetailsElement.name 📋Safari12/11/2023 Firefox9/3/2024267
api.SubtleCrypto.deriveBits.x25519 📋Safari9/18/2023 Firefox9/3/2024351
api.SubtleCrypto.deriveKey.x25519 📋Safari9/18/2023 Firefox9/3/2024351
api.SubtleCrypto.exportKey.x25519 📋Safari9/18/2023 Firefox9/3/2024351
api.SubtleCrypto.generateKey.x25519 📋Safari9/18/2023 Firefox9/3/2024351
api.SubtleCrypto.importKey.x25519 📋Safari9/18/2023 Firefox9/3/2024351
api.VideoColorSpace 📋Safari3/14/2022 Firefox9/3/2024904
api.VideoColorSpace.VideoColorSpace 📋Safari9/18/2023 Firefox9/3/2024351
api.VideoColorSpace.fullRange 📋Safari3/14/2022 Firefox9/3/2024904
api.VideoColorSpace.matrix 📋Safari3/14/2022 Firefox9/3/2024904
api.VideoColorSpace.primaries 📋Safari3/14/2022 Firefox9/3/2024904
api.VideoColorSpace.toJSON 📋Safari3/14/2022 Firefox9/3/2024904
api.VideoColorSpace.transfer 📋Safari3/14/2022 Firefox9/3/2024904
api.VideoDecoder 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoDecoder.VideoDecoder 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoDecoder.close 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoDecoder.configure 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoDecoder.decode 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoDecoder.decodeQueueSize 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoDecoder.dequeue_event 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoDecoder.flush 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoDecoder.isConfigSupported_static 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoDecoder.reset 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoDecoder.state 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoEncoder 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoEncoder.VideoEncoder 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoEncoder.close 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoEncoder.configure 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoEncoder.dequeue_event 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoEncoder.encode 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoEncoder.encodeQueueSize 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoEncoder.flush 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoEncoder.isConfigSupported_static 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoEncoder.reset 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoEncoder.state 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.VideoFrame 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.allocationSize 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.clone 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.close 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.codedHeight 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.codedRect 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.codedWidth 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.colorSpace 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.copyTo 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.displayHeight 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.displayWidth 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.duration 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.format 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.timestamp 📋Safari3/27/2023 Firefox9/3/2024526
api.VideoFrame.visibleRect 📋Safari3/27/2023 Firefox9/3/2024526

2024/8

API First Browser Date Last Browser Date Days Notes
api.CSSStartingStyleRule 📋Safari5/13/2024 Firefox8/6/202485
api.RTCDTMFSender.canInsertDTMF 📋Safari3/24/2020 Firefox8/6/20241596
api.SubtleCrypto.exportKey.ed25519 📋Safari9/18/2023 Firefox8/6/2024323
api.SubtleCrypto.generateKey.ed25519 📋Safari9/18/2023 Firefox8/6/2024323
api.SubtleCrypto.importKey.ed25519 📋Safari9/18/2023 Firefox8/6/2024323
api.SubtleCrypto.sign.ed25519 📋Safari9/18/2023 Firefox8/6/2024323
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 Firefox8/6/2024323
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

2024/7

API First Browser Date Last Browser Date Days Notes
api.CSS.registerProperty_static 📋Safari3/27/2023 Firefox7/9/2024470
api.CSSPropertyRule 📋Safari3/27/2023 Firefox7/9/2024470
api.CSSPropertyRule.inherits 📋Safari3/27/2023 Firefox7/9/2024470
api.CSSPropertyRule.initialValue 📋Safari3/27/2023 Firefox7/9/2024470
api.CSSPropertyRule.name 📋Safari3/27/2023 Firefox7/9/2024470
api.CSSPropertyRule.syntax 📋Safari3/27/2023 Firefox7/9/2024470
api.HTMLBaseElement.href.forbid_special_characters Safari9/12/2022 Firefox7/9/2024666
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 📋Safari3/24/2020 Firefox7/9/20241568

2024/6

API First Browser Date Last Browser Date Days Notes
api.Clipboard.read 📋Safari3/24/2020 Firefox6/11/20241540
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 Safari3/24/2020 Firefox6/11/20241540
api.Clipboard.type_text-html Safari3/24/2020 Firefox6/11/20241540
api.Clipboard.type_text-plain Safari3/24/2020 Firefox6/11/20241540
api.Clipboard.write 📋Safari3/24/2020 Firefox6/11/20241540
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 📋Safari3/24/2020 Firefox6/11/20241540
api.ClipboardItem.ClipboardItem 📋Safari3/24/2020 Firefox6/11/20241540
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.ClipboardItem.getType 📋Safari3/24/2020 Firefox6/11/20241540
api.ClipboardItem.presentationStyle 📋Safari3/24/2020 Firefox6/11/20241540
api.ClipboardItem.types 📋Safari3/24/2020 Firefox6/11/20241540
api.HTMLBaseElement.href.forbid_data_javascript_urls Safari12/11/2023 Firefox6/11/2024183
api.VTTCue.text.all_html_character_references Safari5/13/2024 Firefox6/11/202429

2024/5

API First Browser Date Last Browser Date Days Notes
api.CustomStateSet 📋Safari3/5/2024 Firefox5/14/202470
api.CustomStateSet.@@iterator 📋Safari3/5/2024 Firefox5/14/202470
api.CustomStateSet.add 📋Safari3/5/2024 Firefox5/14/202470
api.CustomStateSet.clear 📋Safari3/5/2024 Firefox5/14/202470
api.CustomStateSet.delete 📋Safari3/5/2024 Firefox5/14/202470
api.CustomStateSet.entries 📋Safari3/5/2024 Firefox5/14/202470
api.CustomStateSet.forEach 📋Safari3/5/2024 Firefox5/14/202470
api.CustomStateSet.has 📋Safari3/5/2024 Firefox5/14/202470
api.CustomStateSet.keys 📋Safari3/5/2024 Firefox5/14/202470
api.CustomStateSet.size 📋Safari3/5/2024 Firefox5/14/202470
api.CustomStateSet.values 📋Safari3/5/2024 Firefox5/14/202470
api.ElementInternals.states 📋Safari3/5/2024 Firefox5/14/202470
api.IDBFactory.databases 📋Safari9/16/2020 Firefox5/14/20241336
api.IDBTransaction.durability 📋Safari9/20/2021 Firefox5/14/2024967
api.Navigator.wakeLock 📋Safari3/27/2023 Firefox5/14/2024414
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 📋Safari3/27/2023 Firefox5/14/2024414
Firefox: The value is recognized, but has no effect.Firefox for Android: The value is recognized, but has no effect.
api.RTCIceCandidate.address 📋Safari4/26/2021 Firefox5/14/20241114
api.RTCIceCandidate.component 📋Safari4/26/2021 Firefox5/14/20241114
api.RTCIceCandidate.foundation 📋Safari4/26/2021 Firefox5/14/20241114
api.RTCIceCandidate.port 📋Safari4/26/2021 Firefox5/14/20241114
api.RTCIceCandidate.priority 📋Safari4/26/2021 Firefox5/14/20241114
api.RTCIceCandidate.protocol 📋Safari4/26/2021 Firefox5/14/20241114
api.RTCIceCandidate.relatedAddress 📋Safari4/26/2021 Firefox5/14/20241114
api.RTCIceCandidate.relatedPort 📋Safari4/26/2021 Firefox5/14/20241114
api.RTCIceCandidate.tcpType 📋Safari4/26/2021 Firefox5/14/20241114
api.RTCIceCandidate.type 📋Safari4/26/2021 Firefox5/14/20241114
api.Selection.direction 📋Safari9/18/2023 Firefox5/14/2024239
api.WakeLock 📋Safari3/27/2023 Firefox5/14/2024414
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 📋Safari3/27/2023 Firefox5/14/2024414
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 📋Safari3/27/2023 Firefox5/14/2024414
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 📋Safari3/27/2023 Firefox5/14/2024414
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 📋Safari3/27/2023 Firefox5/14/2024414
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 📋Safari3/27/2023 Firefox5/14/2024414
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 📋Safari3/27/2023 Firefox5/14/2024414
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.Clipboard.readText 📋Safari3/24/2020 Firefox4/16/20241484
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 📋Safari9/18/2023 Firefox4/16/2024211
api.HTMLButtonElement.popoverTargetElement 📋Safari9/18/2023 Firefox4/16/2024211
api.HTMLElement.beforetoggle_event 📋Safari9/18/2023 Firefox4/16/2024211
api.HTMLElement.beforetoggle_event.popover_elements 📋Safari9/18/2023 Firefox4/16/2024211
api.HTMLElement.hidePopover 📋Safari9/18/2023 Firefox4/16/2024211
api.HTMLElement.popover 📋Safari9/18/2023 Firefox4/16/2024211
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 📋Safari9/18/2023 Firefox4/16/2024211
api.HTMLElement.togglePopover 📋Safari9/18/2023 Firefox4/16/2024211
api.HTMLElement.togglePopover.returns_boolean Safari9/18/2023 Firefox4/16/2024211
api.HTMLElement.toggle_event.popover_elements 📋Safari9/18/2023 Firefox4/16/2024211
api.HTMLInputElement.popoverTargetAction 📋Safari9/18/2023 Firefox4/16/2024211
api.HTMLInputElement.popoverTargetElement 📋Safari9/18/2023 Firefox4/16/2024211
api.RTCDtlsTransport.iceTransport 📋Safari3/14/2022 Firefox4/16/2024764
api.RTCIceTransport 📋Safari9/19/2017 Firefox4/16/20242401
api.RTCIceTransport.gatheringState 📋Safari9/19/2017 Firefox4/16/20242401
api.RTCIceTransport.gatheringstatechange_event 📋Safari3/14/2022 Firefox4/16/2024764
api.RTCIceTransport.state 📋Safari9/19/2017 Firefox4/16/20242401
api.RTCIceTransport.statechange_event 📋Safari3/14/2022 Firefox4/16/2024764

2024/3

API First Browser Date Last Browser Date Days Notes
api.AbortSignal.any_static 📋Safari3/5/2024 Firefox3/19/202414
api.WebSocket.WebSocket.url_parameter_http_https_relative Safari1/22/2024 Firefox3/19/202457
api.DOMMatrixReadOnly.scaleNonUniform 📋Firefox10/14/2014 Safari3/5/20243430
api.Element.ariaDescription 📋Firefox10/24/2023 Safari3/5/2024133
api.Element.attachShadow.options_clonable_parameter 📋Firefox2/20/2024 Safari3/5/202414
api.Element.checkVisibility 📋Firefox10/18/2022 Safari3/5/2024504
api.Element.checkVisibility.options_checkOpacity_parameter 📋Firefox10/18/2022 Safari3/5/2024504
api.Element.checkVisibility.options_checkVisibilityCSS_parameter 📋Firefox10/18/2022 Safari3/5/2024504
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 Firefox5/31/2022 Safari3/5/2024644
api.HTMLInputElement.showPicker.datetime_local_input Firefox5/31/2022 Safari3/5/2024644
api.SVGFESpecularLightingElement.kernelUnitLengthX 📋Firefox6/17/2008 Safari3/5/20245740
api.SVGFESpecularLightingElement.kernelUnitLengthY 📋Firefox6/17/2008 Safari3/5/20245740
api.ShadowRoot.clonable 📋Firefox2/20/2024 Safari3/5/202414

2024/2

API First Browser Date Last Browser Date Days Notes
api.HTMLTemplateElement.shadowRootMode 📋Safari3/27/2023 Firefox2/20/2024330

2024/1

API First Browser Date Last Browser Date Days Notes
api.HTMLVideoElement.disablePictureInPicture 📋Safari3/24/2020 Firefox1/23/20241400
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 📋Safari3/27/2023 Firefox12/19/2023267
api.CanvasRenderingContext2D.reset 📋Firefox5/9/2023 Safari12/11/2023216
api.HTMLLinkElement.imageSizes 📋Firefox6/30/2020 Safari12/11/20231259
api.HTMLLinkElement.imageSrcset 📋Firefox6/30/2020 Safari12/11/20231259
api.HTMLMediaElement.preservesPitch 📋Firefox5/31/2022 Safari12/11/2023559
api.OffscreenCanvasRenderingContext2D.reset 📋Firefox5/9/2023 Safari12/11/2023216
api.SVGImageElement.crossOrigin 📋Firefox6/6/2023 Safari12/11/2023188
api.createImageBitmap.svgimageelement_as_source_image Firefox1/29/2019 Safari12/11/20231777

2023/11

API First Browser Date Last Browser Date Days Notes
api.Navigator.userActivation 📋Safari3/27/2023 Firefox11/21/2023239
api.PublicKeyCredential.authenticatorAttachment 📋Safari5/16/2022 Firefox11/21/2023554
api.ToggleEvent 📋Safari9/18/2023 Firefox11/21/202364
api.ToggleEvent.ToggleEvent 📋Safari9/18/2023 Firefox11/21/202364
api.ToggleEvent.newState 📋Safari9/18/2023 Firefox11/21/202364
api.ToggleEvent.oldState 📋Safari9/18/2023 Firefox11/21/202364
api.UserActivation 📋Safari3/27/2023 Firefox11/21/2023239
api.UserActivation.hasBeenActive 📋Safari3/27/2023 Firefox11/21/2023239
api.UserActivation.isActive 📋Safari3/27/2023 Firefox11/21/2023239

2023/10

API First Browser Date Last Browser Date Days Notes
api.AuthenticatorAttestationResponse.getAuthenticatorData 📋Safari9/12/2022 Firefox10/24/2023407
api.AuthenticatorAttestationResponse.getPublicKey 📋Safari9/12/2022 Firefox10/24/2023407
api.AuthenticatorAttestationResponse.getPublicKeyAlgorithm 📋Safari9/12/2022 Firefox10/24/2023407
api.AuthenticatorAttestationResponse.getTransports 📋Safari9/12/2022 Firefox10/24/2023407
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 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaAutoComplete 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaBusy 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaChecked 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaColCount 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaColIndex 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaColSpan 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaCurrent 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaDisabled 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaExpanded 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaHasPopup 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaHidden 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaInvalid 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaKeyShortcuts 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaLabel 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaLevel 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaLive 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaModal 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaMultiLine 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaMultiSelectable 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaOrientation 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaPlaceholder 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaPosInSet 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaPressed 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaReadOnly 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaRelevant Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaRequired 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaRoleDescription 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaRowCount 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaRowIndex 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaRowSpan 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaSelected 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaSetSize 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaSort 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaValueMax 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaValueMin 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaValueNow 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.ariaValueText 📋Safari3/27/2023 Firefox10/24/2023211
api.ElementInternals.role 📋Safari3/27/2023 Firefox10/24/2023211
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

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.CSSKeyframesRule.length 📋Firefox1/17/2023 Safari9/18/2023244
api.CanvasRenderingContext2D.drawImage.SVGImageElement_source_image Firefox9/28/2017 Safari9/18/20232181
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 Firefox9/20/2022 Safari9/18/2023363
api.OffscreenCanvas.getContext.webgl_context Firefox9/20/2022 Safari9/18/2023363
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 📋Firefox7/4/2023 Safari9/18/202376
api.Selection.removeRange 📋Firefox11/9/2004 Safari9/18/20236887
api.StorageManager.estimate 📋Firefox11/14/2017 Safari9/18/20232134
api.URL.canParse_static 📋Firefox7/4/2023 Safari9/18/202376
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 Firefox10/5/2021 Safari9/18/2023713
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.

2023/8

API First Browser Date Last Browser Date Days Notes
api.CSSStyleRule.cssRules 📋Safari5/18/2023 Firefox8/29/2023103
api.CSSStyleRule.deleteRule 📋Safari5/18/2023 Firefox8/29/2023103
api.CSSStyleRule.insertRule 📋Safari5/18/2023 Firefox8/29/2023103
api.CanvasRenderingContext2D.getContextAttributes 📋Safari9/20/2021 Firefox8/29/2023708
api.DedicatedWorkerGlobalScope.rtctransform_event 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCEncodedAudioFrame 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCEncodedAudioFrame.data 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCEncodedAudioFrame.getMetadata 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCEncodedAudioFrame.timestamp Safari3/14/2022 Firefox8/29/2023533
api.RTCEncodedVideoFrame 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCEncodedVideoFrame.data 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCEncodedVideoFrame.getMetadata 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCEncodedVideoFrame.timestamp Safari3/14/2022 Firefox8/29/2023533
api.RTCEncodedVideoFrame.type 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCRtpReceiver.transform 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCRtpScriptTransform 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCRtpScriptTransform.RTCRtpScriptTransform 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCRtpScriptTransformer 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCRtpScriptTransformer.generateKeyFrame 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCRtpScriptTransformer.options 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCRtpScriptTransformer.readable 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCRtpScriptTransformer.sendKeyFrameRequest 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCRtpScriptTransformer.writable 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCRtpSender.transform 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCTransformEvent 📋Safari3/14/2022 Firefox8/29/2023533
api.RTCTransformEvent.transformer 📋Safari3/14/2022 Firefox8/29/2023533
api.HTMLInputElement.dirName 📋Safari7/25/2012 Firefox8/1/20234024
api.HTMLTextAreaElement.dirName 📋Safari7/25/2012 Firefox8/1/20234024
api.MediaDevices.enumerateDevices 📋Safari9/19/2017 Firefox8/1/20232142
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.alphabeticBaseline 📋Safari4/12/2018 Firefox8/1/20231937
api.TextMetrics.fontBoundingBoxAscent 📋Safari4/12/2018 Firefox8/1/20231937
api.TextMetrics.fontBoundingBoxDescent 📋Safari4/12/2018 Firefox8/1/20231937
api.TextMetrics.hangingBaseline 📋Safari4/12/2018 Firefox8/1/20231937
api.TextMetrics.ideographicBaseline 📋Safari4/12/2018 Firefox8/1/20231937

2023/6

API First Browser Date Last Browser Date Days Notes
api.SharedWorker.SharedWorker.ecmascript_modules Safari9/20/2021 Firefox6/6/2023624
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 Safari9/20/2021 Firefox6/6/2023624
api.Worker.Worker.ecmascript_modules Safari9/20/2021 Firefox6/6/2023624
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 Safari9/20/2021 Firefox6/6/2023624
Deno: Only supports module
api.Worklet.ecmascript_modules Safari9/20/2021 Firefox6/6/2023624
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.

2023/5

API First Browser Date Last Browser Date Days Notes
api.CompressionStream 📋Safari3/27/2023 Firefox5/9/202343
Node.js: Available as a part of the stream/web module.
api.CompressionStream.CompressionStream 📋Safari3/27/2023 Firefox5/9/202343
api.CompressionStream.CompressionStream.deflate 📋Safari3/27/2023 Firefox5/9/202343
api.CompressionStream.CompressionStream.deflate-raw 📋Safari3/27/2023 Firefox5/9/202343
api.CompressionStream.CompressionStream.gzip 📋Safari3/27/2023 Firefox5/9/202343
api.CompressionStream.readable 📋Safari3/27/2023 Firefox5/9/202343
api.CompressionStream.writable 📋Safari3/27/2023 Firefox5/9/202343
api.DecompressionStream 📋Safari3/27/2023 Firefox5/9/202343
Node.js: Available as a part of the stream/web module.
api.DecompressionStream.DecompressionStream 📋Safari3/27/2023 Firefox5/9/202343
api.DecompressionStream.DecompressionStream.deflate 📋Safari3/27/2023 Firefox5/9/202343
api.DecompressionStream.DecompressionStream.deflate-raw 📋Safari3/27/2023 Firefox5/9/202343
api.DecompressionStream.DecompressionStream.gzip 📋Safari3/27/2023 Firefox5/9/202343
api.DecompressionStream.readable 📋Safari3/27/2023 Firefox5/9/202343
api.DecompressionStream.writable 📋Safari3/27/2023 Firefox5/9/202343
api.RTCPeerConnection.connectionState 📋Safari9/19/2017 Firefox5/9/20232058
api.RTCPeerConnection.connectionstatechange_event 📋Safari9/19/2017 Firefox5/9/20232058
api.RTCPeerConnection.sctp 📋Safari3/14/2022 Firefox5/9/2023421
api.RTCRtpReceiver.getCapabilities_static 📋Safari3/25/2019 Firefox5/9/20231506
api.RTCRtpSender.getCapabilities_static 📋Safari3/25/2019 Firefox5/9/20231506
api.RTCRtpSender.setStreams 📋Safari4/26/2021 Firefox5/9/2023743
api.RTCSctpTransport 📋Safari3/14/2022 Firefox5/9/2023421
api.RTCSctpTransport.maxChannels 📋Safari3/14/2022 Firefox5/9/2023421
api.RTCSctpTransport.maxMessageSize 📋Safari3/14/2022 Firefox5/9/2023421
api.RTCSctpTransport.state 📋Safari3/14/2022 Firefox5/9/2023421
api.RTCSctpTransport.statechange_event Safari3/14/2022 Firefox5/9/2023421
api.RTCSctpTransport.transport 📋Safari3/14/2022 Firefox5/9/2023421
api.RTCStatsReport.type_media-source 📋Safari4/26/2021 Firefox5/9/2023743
api.RTCStatsReport.type_media-source.id 📋Safari4/26/2021 Firefox5/9/2023743
api.RTCStatsReport.type_media-source.kind 📋Safari4/26/2021 Firefox5/9/2023743
api.RTCStatsReport.type_media-source.timestamp 📋Safari4/26/2021 Firefox5/9/2023743
api.RTCStatsReport.type_media-source.trackIdentifier 📋Safari4/26/2021 Firefox5/9/2023743
api.RTCStatsReport.type_media-source.type 📋Safari4/26/2021 Firefox5/9/2023743
api.RTCStatsReport.type_peer-connection 📋Safari3/24/2020 Firefox5/9/20231141
api.RTCStatsReport.type_peer-connection.dataChannelsClosed 📋Safari3/24/2020 Firefox5/9/20231141
api.RTCStatsReport.type_peer-connection.dataChannelsOpened 📋Safari3/24/2020 Firefox5/9/20231141
api.RTCStatsReport.type_peer-connection.id 📋Safari3/24/2020 Firefox5/9/20231141
api.RTCStatsReport.type_peer-connection.timestamp 📋Safari3/24/2020 Firefox5/9/20231141
api.RTCStatsReport.type_peer-connection.type 📋Safari3/24/2020 Firefox5/9/20231141

2023/4

API First Browser Date Last Browser Date Days Notes
api.CanvasRenderingContext2D.createConicGradient 📋Safari10/24/2022 Firefox4/11/2023169
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 📋Safari9/12/2022 Firefox4/11/2023211
api.HTMLElement.inert 📋Safari5/16/2022 Firefox4/11/2023330
api.OffscreenCanvasRenderingContext2D.roundRect 📋Safari3/27/2023 Firefox4/11/202315
api.Path2D.roundRect 📋Safari9/12/2022 Firefox4/11/2023211

2023/3

API First Browser Date Last Browser Date Days Notes
api.CSSStyleSheet.CSSStyleSheet 📋Firefox5/31/2022 Safari3/27/2023300
api.CSSStyleSheet.CSSStyleSheet.options_baseURL_parameter 📋Firefox5/31/2022 Safari3/27/2023300
api.CSSStyleSheet.replace 📋Firefox5/31/2022 Safari3/27/2023300
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 📋Firefox5/31/2022 Safari3/27/2023300
api.DedicatedWorkerGlobalScope.cancelAnimationFrame 📋Firefox4/5/2022 Safari3/27/2023356
api.DedicatedWorkerGlobalScope.messageerror_event 📋Firefox11/14/2017 Safari3/27/20231959
api.DedicatedWorkerGlobalScope.requestAnimationFrame 📋Firefox4/5/2022 Safari3/27/2023356
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 📋Firefox5/31/2022 Safari3/27/2023300
api.Document.adoptedStyleSheets.mutable 📋Firefox5/31/2022 Safari3/27/2023300
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 📋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.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 📋Firefox10/5/2021 Safari3/27/2023538
api.ElementInternals.checkValidity 📋Firefox3/8/2022 Safari3/27/2023384
api.ElementInternals.form 📋Firefox3/8/2022 Safari3/27/2023384
api.ElementInternals.labels 📋Firefox3/8/2022 Safari3/27/2023384
api.ElementInternals.reportValidity 📋Firefox3/8/2022 Safari3/27/2023384
api.ElementInternals.setFormValue 📋Firefox3/8/2022 Safari3/27/2023384
api.ElementInternals.setValidity 📋Firefox3/8/2022 Safari3/27/2023384
api.ElementInternals.shadowRoot 📋Firefox10/5/2021 Safari3/27/2023538
api.ElementInternals.validationMessage 📋Firefox3/8/2022 Safari3/27/2023384
api.ElementInternals.validity 📋Firefox3/8/2022 Safari3/27/2023384
api.ElementInternals.willValidate 📋Firefox3/8/2022 Safari3/27/2023384
api.FileSystemDirectoryHandle.@@asyncIterator 📋Firefox3/14/2023 Safari3/27/202313
api.FileSystemSyncAccessHandle.close.sync_version Firefox3/14/2023 Safari3/27/202313
api.FileSystemSyncAccessHandle.flush.sync_version Firefox3/14/2023 Safari3/27/202313
api.FileSystemSyncAccessHandle.getSize.sync_version Firefox3/14/2023 Safari3/27/202313
api.FileSystemSyncAccessHandle.truncate.sync_version Firefox3/14/2023 Safari3/27/202313
api.FormData.FormData.submitter Firefox3/14/2023 Safari3/27/202313
api.GamepadHapticActuator 📋Firefox8/8/2017 Safari3/27/20232057
api.GamepadHapticActuator.type Firefox8/8/2017 Safari3/27/20232057
api.HTMLCanvasElement.transferControlToOffscreen 📋Firefox9/20/2022 Safari3/27/2023188
api.HTMLElement.attachInternals 📋Firefox10/5/2021 Safari3/27/2023538
api.HTMLInputElement.cancel_event 📋Firefox8/10/2021 Safari3/27/2023594
api.HTMLSlotElement.assign 📋Firefox9/7/2021 Safari3/27/2023566
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.KeyframeEffect.iterationComposite 📋Firefox8/25/2020 Safari3/27/2023944
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 📋Firefox4/5/2022 Safari3/27/2023356
api.OffscreenCanvas 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvas.OffscreenCanvas 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvas.convertToBlob 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvas.getContext 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvas.getContext.2d_context Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvas.getContext.bitmaprenderer_context Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvas.height 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvas.transferToImageBitmap 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvas.width 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.arc 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.arcTo 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.beginPath 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.bezierCurveTo 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.canvas 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.clearRect 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.clip 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.closePath 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.createConicGradient 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.createImageData 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.createLinearGradient 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.createPattern 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.createRadialGradient 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.direction 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.drawImage 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.ellipse 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.fill 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.fillRect 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.fillStyle 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.fillText 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.getImageData 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.getLineDash 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.getTransform 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.globalAlpha 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.globalCompositeOperation 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.imageSmoothingEnabled 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.isPointInPath 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.isPointInStroke 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.lineCap 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.lineDashOffset 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.lineJoin 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.lineTo 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.lineWidth 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.measureText 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.miterLimit 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.moveTo 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.putImageData 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.quadraticCurveTo 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.rect 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.resetTransform 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.restore 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.rotate 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.save 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.scale 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.setLineDash 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.setTransform 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.shadowBlur 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.shadowColor 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.shadowOffsetX 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.shadowOffsetY 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.stroke 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.strokeRect 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.strokeStyle 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.strokeText 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.textAlign 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.textBaseline 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.transform 📋Firefox9/20/2022 Safari3/27/2023188
api.OffscreenCanvasRenderingContext2D.translate 📋Firefox9/20/2022 Safari3/27/2023188
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 📋Firefox3/14/2023 Safari3/27/202313
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 Firefox6/2/2020 Safari3/27/20231028
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 Firefox6/2/2020 Safari3/27/20231028
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 📋Firefox5/31/2022 Safari3/27/2023300
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 📋Firefox9/7/2021 Safari3/27/2023566
api.Window.messageerror_event 📋Firefox11/14/2017 Safari3/27/20231959
api.Worker.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.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 📋Firefox5/3/2022 Safari3/27/2023328
api.FileSystemDirectoryHandle 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemDirectoryHandle.entries 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemDirectoryHandle.getDirectoryHandle 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemDirectoryHandle.getFileHandle 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemDirectoryHandle.keys 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemDirectoryHandle.removeEntry 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemDirectoryHandle.resolve 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemDirectoryHandle.values 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemFileHandle 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemFileHandle.createSyncAccessHandle 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemFileHandle.getFile 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemHandle 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemHandle.isSameEntry 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemHandle.kind 📋Safari12/13/2021 Firefox3/14/2023456
api.FileSystemHandle.move Safari12/13/2021 Firefox3/14/2023456
api.FileSystemHandle.name 📋Safari12/13/2021 Firefox3/14/2023456
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 📋Safari12/13/2021 Firefox3/14/2023456
api.XMLHttpRequest.authorization_removed_cross_origin 📋Safari10/24/2022 Firefox3/14/2023141
api.createImageBitmap.options_imageOrientation_parameter.from-image Safari9/12/2022 Firefox3/14/2023183
api.fetch.authorization_removed_cross_origin 📋Safari10/24/2022 Firefox3/14/2023141

2023/2

API First Browser Date Last Browser Date Days Notes
api.CSSContainerRule 📋Safari9/12/2022 Firefox2/14/2023155
api.CSSPageRule.selectorText 📋Safari10/26/2007 Firefox2/14/20235590
api.HTMLElement.autofocus 📋Safari3/14/2022 Firefox2/14/2023337
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 Safari4/26/2021 Firefox2/14/2023659
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 📋Safari3/14/2022 Firefox2/14/2023337
Firefox: Only supported on SVGGraphicsElement.Firefox for Android: Only supported on SVGGraphicsElement.

2022/12

API First Browser Date Last Browser Date Days Notes
api.CSSFontFeatureValuesRule 📋Firefox12/1/2014 Safari12/13/20222934
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.CSSFontFeatureValuesRule.fontFamily 📋Firefox12/1/2014 Safari12/13/20222934
api.HTMLSourceElement.height 📋Safari9/20/2021 Firefox12/13/2022449
api.HTMLSourceElement.width 📋Safari9/20/2021 Firefox12/13/2022449
api.OES_draw_buffers_indexed 📋Safari9/12/2022 Firefox12/13/202292
api.OES_draw_buffers_indexed.blendEquationSeparateiOES 📋Safari9/12/2022 Firefox12/13/202292
api.OES_draw_buffers_indexed.blendEquationiOES 📋Safari9/12/2022 Firefox12/13/202292
api.OES_draw_buffers_indexed.blendFuncSeparateiOES 📋Safari9/12/2022 Firefox12/13/202292
api.OES_draw_buffers_indexed.blendFunciOES 📋Safari9/12/2022 Firefox12/13/202292
api.OES_draw_buffers_indexed.colorMaskiOES 📋Safari9/12/2022 Firefox12/13/202292
api.OES_draw_buffers_indexed.disableiOES 📋Safari9/12/2022 Firefox12/13/202292
api.OES_draw_buffers_indexed.enableiOES 📋Safari9/12/2022 Firefox12/13/202292

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 📋Safari9/20/2021 Firefox10/18/2022393
api.RTCStatsReport.type_inbound-rtp.concealmentEvents 📋Safari4/26/2021 Firefox10/18/2022540
api.RTCStatsReport.type_inbound-rtp.fecPacketsDiscarded 📋Safari4/26/2021 Firefox10/18/2022540
api.RTCStatsReport.type_inbound-rtp.fecPacketsReceived 📋Safari4/26/2021 Firefox10/18/2022540
api.RTCStatsReport.type_inbound-rtp.headerBytesReceived 📋Safari4/26/2021 Firefox10/18/2022540
api.RTCStatsReport.type_inbound-rtp.insertedSamplesForDeceleration 📋Safari4/26/2021 Firefox10/18/2022540
api.RTCStatsReport.type_inbound-rtp.removedSamplesForAcceleration 📋Safari4/26/2021 Firefox10/18/2022540
api.RTCStatsReport.type_inbound-rtp.totalAudioEnergy 📋Safari4/26/2021 Firefox10/18/2022540
api.RTCStatsReport.type_inbound-rtp.totalSamplesDuration 📋Safari4/26/2021 Firefox10/18/2022540

2022/9

API First Browser Date Last Browser Date Days Notes
api.FontFace.worker_support Safari9/20/2021 Firefox9/20/2022365
api.FontFaceSet.worker_support Safari9/20/2021 Firefox9/20/2022365
api.TextDecoderStream 📋Safari4/26/2021 Firefox9/20/2022512
Node.js: Available as a part of the stream/web module.
api.TextDecoderStream.TextDecoderStream 📋Safari4/26/2021 Firefox9/20/2022512
api.TextDecoderStream.encoding 📋Safari4/26/2021 Firefox9/20/2022512
api.TextDecoderStream.fatal 📋Safari4/26/2021 Firefox9/20/2022512
api.TextDecoderStream.ignoreBOM 📋Safari4/26/2021 Firefox9/20/2022512
api.TextDecoderStream.readable 📋Safari4/26/2021 Firefox9/20/2022512
api.TextDecoderStream.writable 📋Safari4/26/2021 Firefox9/20/2022512
api.TextEncoderStream 📋Safari4/26/2021 Firefox9/20/2022512
Node.js: Available as a part of the stream/web module.
api.TextEncoderStream.TextEncoderStream 📋Safari4/26/2021 Firefox9/20/2022512
api.TextEncoderStream.encoding 📋Safari4/26/2021 Firefox9/20/2022512
api.TextEncoderStream.readable 📋Safari4/26/2021 Firefox9/20/2022512
api.TextEncoderStream.writable 📋Safari4/26/2021 Firefox9/20/2022512
api.WorkerGlobalScope.fonts 📋Safari9/20/2021 Firefox9/20/2022365
api.AbortSignal.timeout_static 📋Firefox5/3/2022 Safari9/12/2022132
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.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 📋Firefox8/25/2020 Safari9/12/2022748
api.FetchEvent.handled 📋Firefox12/15/2020 Safari9/12/2022636
api.FetchEvent.resultingClientId 📋Firefox1/29/2019 Safari9/12/20221322
api.HTMLFormElement.requestSubmit 📋Firefox4/7/2020 Safari9/12/2022888
api.HTMLInputElement.showPicker 📋Firefox5/31/2022 Safari9/12/2022104
api.HTMLInputElement.showPicker.color_input Firefox5/31/2022 Safari9/12/2022104
api.HTMLInputElement.showPicker.file_input Firefox5/31/2022 Safari9/12/2022104
api.HTMLScriptElement.supports_static 📋Firefox11/2/2021 Safari9/12/2022314
api.KeyframeEffect.composite 📋Firefox8/25/2020 Safari9/12/2022748
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 📋Firefox1/11/2022 Safari9/12/2022244
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.ServiceWorkerGlobalScope.pushsubscriptionchange_event 📋Firefox1/26/2016 Safari9/12/20222421
Firefox: The event does not have the oldSubscription and newSubscription properties. See bug 1497429.Firefox for Android: The event does not have the oldSubscription and newSubscription properties. See bug 1497429.Safari: Notifications are supported on macOS Ventura and later.
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.SharedWorker.mime_checks Firefox9/22/2020 Safari9/12/2022720
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 📋Firefox9/20/2016 Safari9/12/20222183
api.SpeechSynthesisErrorEvent.SpeechSynthesisErrorEvent 📋Firefox9/20/2016 Safari9/12/20222183
api.SpeechSynthesisEvent.SpeechSynthesisEvent 📋Firefox9/20/2016 Safari9/12/20222183
api.SpeechSynthesisEvent.charLength 📋Firefox4/19/2017 Safari9/12/20221972
api.SpeechSynthesisEvent.utterance 📋Firefox9/20/2016 Safari9/12/20222183
api.Window.gamepadconnected_event 📋Firefox6/1/2021 Safari9/12/2022468
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 Safari9/12/2022468
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.
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.Worker.Worker.mime_checks Firefox9/22/2020 Safari9/12/2022720
api.WorkerGlobalScope.importScripts.mime_checks Firefox5/21/2019 Safari9/12/20221210

2022/8

API First Browser Date Last Browser Date Days Notes
api.RTCStatsReport.type_inbound-rtp.concealedSamples 📋Safari4/26/2021 Firefox8/23/2022484
api.RTCStatsReport.type_inbound-rtp.jitterBufferDelay 📋Safari4/26/2021 Firefox8/23/2022484
api.RTCStatsReport.type_inbound-rtp.jitterBufferEmittedCount 📋Safari4/26/2021 Firefox8/23/2022484
api.RTCStatsReport.type_inbound-rtp.silentConcealedSamples 📋Safari4/26/2021 Firefox8/23/2022484
api.RTCStatsReport.type_inbound-rtp.totalSamplesReceived 📋Safari4/26/2021 Firefox8/23/2022484
api.SVGStyleElement.disabled 📋Safari7/25/2012 Firefox8/23/20223681

2022/7

API First Browser Date Last Browser Date Days Notes
api.Performance.measure.measureOptions_parameter Safari4/26/2021 Firefox7/26/2022456
api.Performance.measure.returns_performancemeasure Safari4/26/2021 Firefox7/26/2022456
api.PerformanceMeasure.detail 📋Safari4/26/2021 Firefox7/26/2022456
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 📋Safari4/26/2021 Firefox6/28/2022428
Node.js: Available as a part of the stream/web module.
api.TransformStream.TransformStream 📋Safari4/26/2021 Firefox6/28/2022428
api.TransformStream.readable 📋Safari4/26/2021 Firefox6/28/2022428
api.TransformStream.writable 📋Safari4/26/2021 Firefox6/28/2022428
api.TransformStreamDefaultController 📋Safari4/26/2021 Firefox6/28/2022428
Deno: TransformStreamDefaultController is not exposed on the global scope.Node.js: Available as a part of the stream/web module.
api.TransformStreamDefaultController.desiredSize 📋Safari4/26/2021 Firefox6/28/2022428
api.TransformStreamDefaultController.enqueue 📋Safari4/26/2021 Firefox6/28/2022428
api.TransformStreamDefaultController.error 📋Safari4/26/2021 Firefox6/28/2022428
api.TransformStreamDefaultController.terminate 📋Safari4/26/2021 Firefox6/28/2022428

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 Safari4/26/2021 Firefox5/31/2022400
api.Performance.mark.returns_performancemark Safari4/26/2021 Firefox5/31/2022400
api.PerformanceMark.PerformanceMark 📋Safari4/26/2021 Firefox5/31/2022400
api.PerformanceMark.detail 📋Safari4/26/2021 Firefox5/31/2022400
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 📋Safari4/26/2021 Firefox5/3/2022372
api.RTCStatsReport.type_outbound-rtp.retransmittedBytesSent 📋Safari4/26/2021 Firefox5/3/2022372
api.RTCStatsReport.type_outbound-rtp.retransmittedPacketsSent 📋Safari4/26/2021 Firefox5/3/2022372
api.ReadableStream.pipeTo 📋Safari3/27/2017 Firefox5/3/20221863
api.ReadableStreamDefaultReader.ReadableStreamDefaultReader 📋Safari9/20/2016 Firefox5/3/20222051
api.WritableStream 📋Safari4/26/2021 Firefox5/3/2022372
Node.js: Available as a part of the stream/web module.
api.WritableStream.WritableStream 📋Safari4/26/2021 Firefox5/3/2022372
api.WritableStream.abort 📋Safari4/26/2021 Firefox5/3/2022372
api.WritableStream.close 📋Safari4/26/2021 Firefox5/3/2022372
api.WritableStream.getWriter 📋Safari4/26/2021 Firefox5/3/2022372
api.WritableStream.locked 📋Safari4/26/2021 Firefox5/3/2022372
api.WritableStreamDefaultController 📋Safari4/26/2021 Firefox5/3/2022372
Node.js: Available as a part of the stream/web module.
api.WritableStreamDefaultController.error 📋Safari4/26/2021 Firefox5/3/2022372
api.WritableStreamDefaultWriter 📋Safari4/26/2021 Firefox5/3/2022372
Node.js: Available as a part of the stream/web module.
api.WritableStreamDefaultWriter.WritableStreamDefaultWriter 📋Safari4/26/2021 Firefox5/3/2022372
api.WritableStreamDefaultWriter.abort 📋Safari4/26/2021 Firefox5/3/2022372
api.WritableStreamDefaultWriter.close 📋Safari4/26/2021 Firefox5/3/2022372
api.WritableStreamDefaultWriter.closed 📋Safari4/26/2021 Firefox5/3/2022372
api.WritableStreamDefaultWriter.desiredSize 📋Safari4/26/2021 Firefox5/3/2022372
api.WritableStreamDefaultWriter.ready 📋Safari4/26/2021 Firefox5/3/2022372
api.WritableStreamDefaultWriter.releaseLock 📋Safari4/26/2021 Firefox5/3/2022372
api.WritableStreamDefaultWriter.write 📋Safari4/26/2021 Firefox5/3/2022372

2022/4

API First Browser Date Last Browser Date Days Notes
api.FetchEvent.preloadResponse 📋Safari3/14/2022 Firefox4/5/202222
api.NavigationPreloadManager 📋Safari3/14/2022 Firefox4/5/202222
api.NavigationPreloadManager.disable 📋Safari3/14/2022 Firefox4/5/202222
api.NavigationPreloadManager.enable 📋Safari3/14/2022 Firefox4/5/202222
api.NavigationPreloadManager.getState 📋Safari3/14/2022 Firefox4/5/202222
api.NavigationPreloadManager.setHeaderValue 📋Safari3/14/2022 Firefox4/5/202222
api.RTCPeerConnection.setConfiguration 📋Safari9/19/2017 Firefox4/5/20221659
api.ServiceWorkerRegistration.navigationPreload 📋Safari3/14/2022 Firefox4/5/202222

2022/3

API First Browser Date Last Browser Date Days Notes
api.AbortController.abort.reason_parameter 📋Firefox2/8/2022 Safari3/14/202234
api.AbortSignal.abort_static.reason_parameter 📋Firefox2/8/2022 Safari3/14/202234
api.AbortSignal.reason 📋Firefox2/8/2022 Safari3/14/202234
api.AbortSignal.throwIfAborted 📋Firefox2/8/2022 Safari3/14/202234
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 📋Firefox12/7/2021 Safari3/14/202297
Node.js: Since 14.17.0 and 15.6.0, a similar method is available via the crypto module.
api.Document.securitypolicyviolation_event 📋Firefox10/5/2021 Safari3/14/2022160
api.HTMLDialogElement 📋Firefox3/8/2022 Safari3/14/20226
api.HTMLDialogElement.cancel_event 📋Firefox3/8/2022 Safari3/14/20226
api.HTMLDialogElement.close 📋Firefox3/8/2022 Safari3/14/20226
api.HTMLDialogElement.close_event 📋Firefox3/8/2022 Safari3/14/20226
api.HTMLDialogElement.open 📋Firefox3/8/2022 Safari3/14/20226
api.HTMLDialogElement.returnValue 📋Firefox3/8/2022 Safari3/14/20226
api.HTMLDialogElement.show 📋Firefox3/8/2022 Safari3/14/20226
api.HTMLDialogElement.showModal 📋Firefox3/8/2022 Safari3/14/20226
api.HTMLElement.nonce 📋Firefox4/7/2020 Safari3/14/2022706
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 📋Firefox4/7/2020 Safari3/14/2022706
api.Lock 📋Firefox1/11/2022 Safari3/14/202262
api.Lock.mode 📋Firefox1/11/2022 Safari3/14/202262
api.Lock.name 📋Firefox1/11/2022 Safari3/14/202262
api.LockManager 📋Firefox1/11/2022 Safari3/14/202262
api.LockManager.query 📋Firefox1/11/2022 Safari3/14/202262
api.LockManager.request 📋Firefox1/11/2022 Safari3/14/202262
api.MediaCapabilities.encodingInfo 📋Firefox10/23/2018 Safari3/14/20221238
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.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 📋Firefox1/11/2022 Safari3/14/202262
api.RTCDtlsTransport 📋Firefox10/20/2020 Safari3/14/2022510
api.RTCDtlsTransport.state 📋Firefox10/20/2020 Safari3/14/2022510
api.RTCDtlsTransport.statechange_event Firefox10/20/2020 Safari3/14/2022510
api.RTCPeerConnection.canTrickleIceCandidates 📋Firefox6/7/2016 Safari3/14/20222106
api.RTCPeerConnection.setRemoteDescription.implicit_rollback Firefox10/22/2019 Safari3/14/2022874
api.RTCRtpReceiver.transport 📋Firefox10/20/2020 Safari3/14/2022510
api.RTCRtpSender.transport 📋Firefox10/20/2020 Safari3/14/2022510
api.RTCStatsReport.type_inbound-rtp.packetsDiscarded 📋Firefox1/11/2022 Safari3/14/202262
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 📋Firefox9/7/2021 Safari3/14/2022188
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 📋Firefox9/7/2021 Safari3/14/2022188
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 📋Firefox4/7/2020 Safari3/14/2022706
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 📋Firefox1/11/2022 Safari3/14/202262
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.
api.HTMLElement.outerText 📋Safari4/15/2005 Firefox3/8/20226171
api.RTCStatsReport.type_codec 📋Safari3/24/2020 Firefox3/8/2022714
api.RTCStatsReport.type_codec.channels 📋Safari4/26/2021 Firefox3/8/2022316
api.RTCStatsReport.type_codec.clockRate 📋Safari3/24/2020 Firefox3/8/2022714
api.RTCStatsReport.type_codec.id 📋Safari3/24/2020 Firefox3/8/2022714
api.RTCStatsReport.type_codec.mimeType 📋Safari3/24/2020 Firefox3/8/2022714
api.RTCStatsReport.type_codec.payloadType 📋Safari3/24/2020 Firefox3/8/2022714
api.RTCStatsReport.type_codec.sdpFmtpLine 📋Safari9/16/2020 Firefox3/8/2022538
api.RTCStatsReport.type_codec.timestamp 📋Safari3/24/2020 Firefox3/8/2022714
api.RTCStatsReport.type_codec.type 📋Safari3/24/2020 Firefox3/8/2022714
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 Safari9/20/2021 Firefox3/8/2022169
api.createImageBitmap.options_resizeHeight_parameter Safari9/20/2021 Firefox3/8/2022169
api.createImageBitmap.options_resizeWidth_parameter Safari9/20/2021 Firefox3/8/2022169

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 📋Safari9/16/2020 Firefox1/11/2022482
api.RTCStatsReport.type_remote-inbound-rtp.roundTripTime 📋Safari4/26/2021 Firefox1/11/2022260

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
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 📋Safari3/24/2020 Firefox11/2/2021588
api.HTMLElement.enterKeyHint 📋Safari3/24/2020 Firefox11/2/2021588
api.ShadowRoot.delegatesFocus 📋Safari9/20/2021 Firefox11/2/202143

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 Safari9/20/2021 Firefox10/5/202115

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 Firefox4/7/2020 Safari9/20/2021531
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 Firefox7/9/2019 Safari9/20/2021804
api.HTMLFormElement.formdata_event 📋Firefox1/7/2020 Safari9/20/2021622
api.IDBCursor.request 📋Firefox6/2/2020 Safari9/20/2021475
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 📋Firefox3/10/2020 Safari9/20/2021559
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 📋Firefox10/20/2020 Safari9/20/2021335
Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface.
api.MediaSession.metadata 📋Firefox10/20/2020 Safari9/20/2021335
Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface.
api.MediaSession.playbackState 📋Firefox10/20/2020 Safari9/20/2021335
Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface.
api.MediaSession.setActionHandler 📋Firefox10/20/2020 Safari9/20/2021335
Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface.
api.MediaSession.setActionHandler.nexttrack_type Firefox10/20/2020 Safari9/20/2021335
api.MediaSession.setActionHandler.pause_type Firefox10/20/2020 Safari9/20/2021335
api.MediaSession.setActionHandler.play_type Firefox10/20/2020 Safari9/20/2021335
api.MediaSession.setActionHandler.previoustrack_type Firefox10/20/2020 Safari9/20/2021335
api.MediaSession.setActionHandler.seekbackward_type Firefox10/20/2020 Safari9/20/2021335
api.MediaSession.setActionHandler.seekforward_type Firefox10/20/2020 Safari9/20/2021335
api.MediaSession.setActionHandler.seekto_type Firefox10/20/2020 Safari9/20/2021335
api.MediaSession.setActionHandler.skipad_type Firefox10/20/2020 Safari9/20/2021335
api.MediaSession.setActionHandler.stop_type Firefox10/20/2020 Safari9/20/2021335
api.MediaSession.setPositionState 📋Firefox10/20/2020 Safari9/20/2021335
Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface.
api.Navigator.mediaSession 📋Firefox10/20/2020 Safari9/20/2021335
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 📋Firefox1/23/2018 Safari9/20/20211336
api.PerformanceNavigationTiming.domComplete 📋Firefox1/23/2018 Safari9/20/20211336
api.PerformanceNavigationTiming.domContentLoadedEventEnd 📋Firefox1/23/2018 Safari9/20/20211336
api.PerformanceNavigationTiming.domContentLoadedEventStart 📋Firefox1/23/2018 Safari9/20/20211336
api.PerformanceNavigationTiming.domInteractive 📋Firefox1/23/2018 Safari9/20/20211336
api.PerformanceNavigationTiming.loadEventEnd 📋Firefox1/23/2018 Safari9/20/20211336
api.PerformanceNavigationTiming.loadEventStart 📋Firefox1/23/2018 Safari9/20/20211336
api.PerformanceNavigationTiming.redirectCount 📋Firefox1/23/2018 Safari9/20/20211336
api.PerformanceNavigationTiming.toJSON 📋Firefox1/23/2018 Safari9/20/20211336
api.PerformanceNavigationTiming.type 📋Firefox1/23/2018 Safari9/20/20211336
api.PerformanceNavigationTiming.unloadEventEnd 📋Firefox1/23/2018 Safari9/20/20211336
api.PerformanceNavigationTiming.unloadEventStart 📋Firefox1/23/2018 Safari9/20/20211336
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 Firefox7/9/2019 Safari9/20/2021804
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 Firefox4/7/2020 Safari9/20/2021531
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

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

2021/7

API First Browser Date Last Browser Date Days Notes
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

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 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioParamMap.@@iterator Firefox5/5/2020 Safari4/26/2021356
api.AudioParamMap.entries Firefox5/5/2020 Safari4/26/2021356
api.AudioParamMap.forEach Firefox5/5/2020 Safari4/26/2021356
api.AudioParamMap.get Firefox5/5/2020 Safari4/26/2021356
api.AudioParamMap.has Firefox5/5/2020 Safari4/26/2021356
api.AudioParamMap.keys Firefox5/5/2020 Safari4/26/2021356
api.AudioParamMap.size Firefox5/5/2020 Safari4/26/2021356
api.AudioParamMap.values Firefox5/5/2020 Safari4/26/2021356
api.AudioWorklet 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioWorkletGlobalScope 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioWorkletGlobalScope.currentFrame 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioWorkletGlobalScope.currentTime 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioWorkletGlobalScope.registerProcessor 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioWorkletGlobalScope.sampleRate 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioWorkletNode 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioWorkletNode.AudioWorkletNode 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioWorkletNode.parameters 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioWorkletNode.port 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioWorkletNode.processorerror_event 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioWorkletProcessor 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioWorkletProcessor.AudioWorkletProcessor 📋Firefox5/5/2020 Safari4/26/2021356
api.AudioWorkletProcessor.port 📋Firefox5/5/2020 Safari4/26/2021356
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 📋Firefox5/5/2020 Safari4/26/2021356
api.BaseAudioContext.createConstantSource 📋Firefox3/7/2017 Safari4/26/20211511
api.BaseAudioContext.createIIRFilter 📋Firefox11/15/2016 Safari4/26/20211623
api.BaseAudioContext.createPeriodicWave.constraints_disableNormalization_parameter Firefox9/20/2016 Safari4/26/20211679
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 📋Firefox9/5/2018 Safari4/26/2021964
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.EXT_texture_compression_rgtc 📋Firefox1/29/2019 Safari4/26/2021818
Chrome: Only supported on macOS.Edge: Only supported on macOS.Firefox: Only supported on macOS.Opera: Only supported on macOS.
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 📋Firefox11/15/2016 Safari4/26/20211623
api.IIRFilterNode.IIRFilterNode 📋Firefox4/19/2017 Safari4/26/20211468
api.IIRFilterNode.getFrequencyResponse 📋Firefox11/15/2016 Safari4/26/20211623
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 📋Firefox9/20/2016 Safari4/26/20211679
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 📋Firefox12/15/2020 Safari4/26/2021132
api.PerformancePaintTiming.first-contentful-paint 📋Firefox12/15/2020 Safari4/26/2021132
api.PerformancePaintTiming.toJSON 📋Firefox12/15/2020 Safari4/26/2021132
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 Firefox4/7/2020 Safari4/26/2021384
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.VTTCue.lineAlign 📋Firefox7/22/2014 Safari4/26/20212470
api.VTTCue.positionAlign 📋Firefox7/22/2014 Safari4/26/20212470
api.VTTCue.region 📋Firefox3/13/2018 Safari4/26/20211140
api.WEBGL_compressed_texture_s3tc_srgb 📋Firefox8/8/2017 Safari4/26/20211357
api.WaveShaperNode.WaveShaperNode 📋Firefox4/19/2017 Safari4/26/20211468
api.Worklet 📋Firefox5/5/2020 Safari4/26/2021356
api.Worklet.addModule 📋Firefox5/5/2020 Safari4/26/2021356
api.WorkletGlobalScope 📋Firefox5/5/2020 Safari4/26/2021356

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.

2020/10

API First Browser Date Last Browser Date Days Notes
api.MediaMetadata 📋Safari9/16/2020 Firefox10/20/202034
Firefox for Android: Firefox exposes the API, but does not provide a corresponding user-facing media control interface.
api.MediaMetadata.MediaMetadata 📋Safari9/16/2020 Firefox10/20/202034
api.MediaMetadata.album 📋Safari9/16/2020 Firefox10/20/202034
api.MediaMetadata.artist 📋Safari9/16/2020 Firefox10/20/202034
api.MediaMetadata.artwork 📋Safari9/16/2020 Firefox10/20/202034
api.MediaMetadata.title 📋Safari9/16/2020 Firefox10/20/202034

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.Document.replaceChildren 📋Firefox6/30/2020 Safari9/16/202078
api.DocumentFragment.replaceChildren 📋Firefox6/30/2020 Safari9/16/202078
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.replaceChildren 📋Firefox6/30/2020 Safari9/16/202078
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.HTMLElement.accessKeyLabel 📋Firefox11/8/2011 Safari9/16/20203235
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 Firefox5/5/2020 Safari9/16/2020134
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.MediaRecorderErrorEvent Firefox11/14/2017 Safari9/16/20201037
api.MediaRecorderErrorEvent.MediaRecorderErrorEvent Firefox11/14/2017 Safari9/16/20201037
api.MediaRecorderErrorEvent.error Firefox11/14/2017 Safari9/16/20201037
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.RTCStatsReport.type_remote-outbound-rtp.kind 📋Firefox10/23/2018 Safari9/16/2020694
api.SVGAElement.rel 📋Firefox6/26/2018 Safari9/16/2020813
api.SVGAElement.relList 📋Firefox6/26/2018 Safari9/16/2020813
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.

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 📋Safari3/24/2020 Firefox7/28/2020126
api.RTCStatsReport.type_data-channel.bytesReceived 📋Safari3/24/2020 Firefox7/28/2020126
api.RTCStatsReport.type_data-channel.bytesSent 📋Safari3/24/2020 Firefox7/28/2020126
api.RTCStatsReport.type_data-channel.id 📋Safari3/24/2020 Firefox7/28/2020126
api.RTCStatsReport.type_data-channel.label 📋Safari3/24/2020 Firefox7/28/2020126
api.RTCStatsReport.type_data-channel.messagesReceived 📋Safari3/24/2020 Firefox7/28/2020126
api.RTCStatsReport.type_data-channel.messagesSent 📋Safari3/24/2020 Firefox7/28/2020126
api.RTCStatsReport.type_data-channel.protocol 📋Safari3/24/2020 Firefox7/28/2020126
api.RTCStatsReport.type_data-channel.state 📋Safari3/24/2020 Firefox7/28/2020126
api.RTCStatsReport.type_data-channel.timestamp 📋Safari3/24/2020 Firefox7/28/2020126
api.RTCStatsReport.type_data-channel.type 📋Safari3/24/2020 Firefox7/28/2020126

2020/4

API First Browser Date Last Browser Date Days Notes
api.Animation.commitStyles 📋Safari3/24/2020 Firefox4/7/202014
api.Animation.persist 📋Safari3/24/2020 Firefox4/7/202014
api.Animation.remove_event 📋Safari3/24/2020 Firefox4/7/202014
api.Animation.remove_filling_animation Safari3/24/2020 Firefox4/7/202014
api.Animation.replaceState 📋Safari3/24/2020 Firefox4/7/202014
api.Animation.timeline 📋Safari3/24/2020 Firefox4/7/202014
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.AnimationTimeline 📋Safari3/24/2020 Firefox4/7/202014
api.AnimationTimeline.currentTime 📋Safari3/24/2020 Firefox4/7/202014
api.CSSAnimation 📋Safari3/24/2020 Firefox4/7/202014
api.CSSAnimation.animationName 📋Safari3/24/2020 Firefox4/7/202014
api.CSSTransition 📋Safari3/24/2020 Firefox4/7/202014
api.CSSTransition.transitionProperty 📋Safari3/24/2020 Firefox4/7/202014
api.Document.timeline 📋Safari3/24/2020 Firefox4/7/202014
api.DocumentTimeline 📋Safari3/24/2020 Firefox4/7/202014
api.DocumentTimeline.DocumentTimeline 📋Safari3/24/2020 Firefox4/7/202014
api.Element.animate.implicit_tofrom Safari3/24/2020 Firefox4/7/202014
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 Firefox4/7/202014

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.finished 📋Firefox10/23/2018 Safari3/24/2020518
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.ready 📋Firefox10/23/2018 Safari3/24/2020518
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.AnimationPlaybackEvent 📋Firefox10/23/2018 Safari3/24/2020518
api.AnimationPlaybackEvent.AnimationPlaybackEvent 📋Firefox10/23/2018 Safari3/24/2020518
api.AnimationPlaybackEvent.currentTime 📋Firefox10/23/2018 Safari3/24/2020518
api.AnimationPlaybackEvent.timelineTime 📋Firefox10/23/2018 Safari3/24/2020518
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.animationcancel_event 📋Firefox6/13/2017 Safari3/24/20201015
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.
api.Element.part 📋Firefox1/7/2020 Safari3/24/202077
api.Element.transitioncancel_event 📋Firefox4/19/2017 Safari3/24/20201070
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.
api.Element.transitionrun_event 📋Firefox4/19/2017 Safari3/24/20201070
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 📋Firefox4/19/2017 Safari3/24/20201070
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.getKeyframes 📋Firefox10/23/2018 Safari3/24/2020518
api.KeyframeEffect.setKeyframes 📋Firefox10/23/2018 Safari3/24/2020518
api.KeyframeEffect.target 📋Firefox10/23/2018 Safari3/24/2020518
api.MathMLElement 📋Firefox12/10/2019 Safari3/24/2020105
api.MathMLElement.blur 📋Firefox12/10/2019 Safari3/24/2020105
api.MathMLElement.dataset 📋Firefox12/10/2019 Safari3/24/2020105
api.MathMLElement.focus 📋Firefox12/10/2019 Safari3/24/2020105
api.MathMLElement.style 📋Firefox12/10/2019 Safari3/24/2020105
api.MathMLElement.tabIndex 📋Firefox12/10/2019 Safari3/24/2020105
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 📋Firefox3/7/2017 Safari3/24/20201113
api.RTCDTMFToneChangeEvent.RTCDTMFToneChangeEvent 📋Firefox3/7/2017 Safari3/24/20201113
api.RTCDTMFToneChangeEvent.tone 📋Firefox3/7/2017 Safari3/24/20201113
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
api.StaticRange.StaticRange 📋Firefox12/10/2019 Safari3/24/2020105
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

2020/1

API First Browser Date Last Browser Date Days Notes
api.MediaStream.removetrack_event 📋Safari9/19/2017 Firefox1/7/2020840
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.
api.RTCStatsReport.type_local-candidate.port 📋Safari3/25/2019 Firefox1/7/2020288
api.RTCStatsReport.type_local-candidate.priority 📋Safari3/25/2019 Firefox1/7/2020288
api.RTCStatsReport.type_remote-candidate.port 📋Safari3/25/2019 Firefox1/7/2020288
api.RTCStatsReport.type_remote-candidate.priority 📋Safari3/25/2019 Firefox1/7/2020288

2019/12

API First Browser Date Last Browser Date Days Notes
api.Navigator.share 📋Safari3/25/2019 Firefox12/10/2019260
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.

2019/10

API First Browser Date Last Browser Date Days Notes
api.CanvasRenderingContext2D.getTransform 📋Safari4/12/2018 Firefox10/22/2019558
api.CanvasRenderingContext2D.setTransform.matrix_parameter Safari4/12/2018 Firefox10/22/2019558
api.Document.all 📋Safari9/19/2017 Firefox10/22/2019763
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 📋Safari9/19/2017 Firefox10/22/2019763
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 📋Safari9/19/2017 Firefox10/22/2019763
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 📋Safari9/19/2017 Firefox10/22/2019763
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.MediaElementAudioSourceNode.mediaElement 📋Safari7/25/2012 Firefox10/22/20192645
api.MediaStreamAudioSourceNode.mediaStream 📋Safari9/19/2017 Firefox10/22/2019763
api.MediaStreamTrack.applyConstraints.groupId_constraint 📋Safari9/19/2017 Firefox10/22/2019763

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.CredentialsContainer.store 📋Firefox5/9/2018 Safari9/19/2019498
api.Element.gotpointercapture_event 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.hasPointerCapture 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.lostpointercapture_event 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.pointercancel_event 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.pointerdown_event 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.pointerenter_event 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.pointerleave_event 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.pointermove_event 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.pointerout_event 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.pointerover_event 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.pointerup_event 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.releasePointerCapture 📋Firefox3/13/2018 Safari9/19/2019555
api.Element.setPointerCapture 📋Firefox3/13/2018 Safari9/19/2019555
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.MediaCapabilities 📋Firefox10/23/2018 Safari9/19/2019331
api.MediaCapabilities.decodingInfo 📋Firefox10/23/2018 Safari9/19/2019331
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 Safari9/19/2019184
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.Navigator.credentials 📋Firefox5/9/2018 Safari9/19/2019498
api.Navigator.maxTouchPoints 📋Firefox3/13/2018 Safari9/19/2019555
api.Navigator.mediaCapabilities 📋Firefox10/23/2018 Safari9/19/2019331
api.PerformanceObserver.supportedEntryTypes_static 📋Firefox7/9/2019 Safari9/19/201972
api.PointerEvent 📋Firefox3/13/2018 Safari9/19/2019555
Internet Explorer: See MSDN Pointer events updates.
api.PointerEvent.PointerEvent 📋Firefox3/13/2018 Safari9/19/2019555
Internet Explorer: See MSDN Pointer events updates.
api.PointerEvent.height 📋Firefox3/13/2018 Safari9/19/2019555
Internet Explorer: Returns values in screen pixels instead of CSS document pixels.
api.PointerEvent.isPrimary 📋Firefox3/13/2018 Safari9/19/2019555
api.PointerEvent.pointerId 📋Firefox3/13/2018 Safari9/19/2019555
api.PointerEvent.pointerType 📋Firefox3/13/2018 Safari9/19/2019555
Internet Explorer: Returns an integer enumeration instead of a string.
api.PointerEvent.pressure 📋Firefox3/13/2018 Safari9/19/2019555
Internet Explorer: Returns 0 instead of 0.5 on hardware that doesn't support pressure.
api.PointerEvent.tangentialPressure 📋Firefox3/13/2018 Safari9/19/2019555
api.PointerEvent.tiltX 📋Firefox3/13/2018 Safari9/19/2019555
api.PointerEvent.tiltY 📋Firefox3/13/2018 Safari9/19/2019555
api.PointerEvent.twist 📋Firefox3/13/2018 Safari9/19/2019555
api.PointerEvent.width 📋Firefox3/13/2018 Safari9/19/2019555
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
api.console.countReset_static 📋Firefox9/5/2018 Safari9/19/2019379
api.console.timeLog_static 📋Firefox9/5/2018 Safari9/19/2019379
api.DOMMatrix.fromFloat32Array_static 📋Safari9/19/2017 Firefox9/3/2019714
api.DOMMatrix.fromFloat64Array_static 📋Safari9/19/2017 Firefox9/3/2019714
api.DOMMatrix.fromMatrix_static 📋Safari9/19/2017 Firefox9/3/2019714
api.DOMMatrix.worker_support Safari9/19/2017 Firefox9/3/2019714
api.DOMMatrixReadOnly.fromFloat32Array_static 📋Safari9/19/2017 Firefox9/3/2019714
api.DOMMatrixReadOnly.fromFloat64Array_static 📋Safari9/19/2017 Firefox9/3/2019714
api.DOMMatrixReadOnly.fromMatrix_static 📋Safari9/19/2017 Firefox9/3/2019714
api.DOMMatrixReadOnly.worker_support Safari9/19/2017 Firefox9/3/2019714
api.DOMPoint.worker_support Safari3/27/2017 Firefox9/3/2019890
api.DOMPointReadOnly.matrixTransform 📋Safari9/19/2017 Firefox9/3/2019714
api.DOMPointReadOnly.worker_support Safari3/27/2017 Firefox9/3/2019890
api.DOMQuad.fromQuad_static 📋Safari9/19/2017 Firefox9/3/2019714
api.DOMQuad.fromRect_static 📋Safari9/19/2017 Firefox9/3/2019714
api.DOMQuad.worker_support Safari9/19/2017 Firefox9/3/2019714
api.DOMRect.fromRect_static 📋Safari3/27/2017 Firefox9/3/2019890
api.DOMRect.worker_support Safari3/27/2017 Firefox9/3/2019890
api.DOMRectReadOnly.fromRect_static 📋Safari3/27/2017 Firefox9/3/2019890
api.DOMRectReadOnly.worker_support Safari3/27/2017 Firefox9/3/2019890
api.Document.alinkColor 📋Safari9/19/2017 Firefox9/3/2019714
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 📋Safari9/19/2017 Firefox9/3/2019714
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 📋Safari9/19/2017 Firefox9/3/2019714
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 📋Safari3/27/2017 Firefox9/3/2019890
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 📋Safari9/19/2017 Firefox9/3/2019714
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 📋Safari9/19/2017 Firefox9/3/2019714
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 📋Safari9/19/2017 Firefox9/3/2019714
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 📋Safari9/19/2017 Firefox9/3/2019714
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 📋Safari9/19/2017 Firefox9/3/2019714
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 📋Safari9/19/2017 Firefox9/3/2019714
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.Navigator.mediaDevices.secure_context_required Safari9/19/2017 Firefox9/3/2019714
api.PromiseRejectionEvent 📋Safari9/19/2017 Firefox9/3/2019714
api.PromiseRejectionEvent.PromiseRejectionEvent 📋Safari9/19/2017 Firefox9/3/2019714
api.PromiseRejectionEvent.promise 📋Safari9/19/2017 Firefox9/3/2019714
api.PromiseRejectionEvent.reason 📋Safari9/19/2017 Firefox9/3/2019714
api.SVGGeometryElement.isPointInFill 📋Safari9/17/2018 Firefox9/3/2019351
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.isPointInFill.point_parameter_DOMPoint Safari9/17/2018 Firefox9/3/2019351
api.SVGGeometryElement.isPointInStroke 📋Safari9/17/2018 Firefox9/3/2019351
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.point_parameter_DOMPoint Safari9/17/2018 Firefox9/3/2019351
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
api.Window.rejectionhandled_event 📋Safari9/19/2017 Firefox9/3/2019714
api.Window.unhandledrejection_event 📋Safari9/19/2017 Firefox9/3/2019714
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 Firefox9/3/2019714
api.WorkerGlobalScope.unhandledrejection_event 📋Safari9/19/2017 Firefox9/3/2019714
api.queueMicrotask 📋Safari3/25/2019 Firefox9/3/2019162

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.HTMLImageElement.decode 📋Safari4/12/2018 Firefox7/9/2019453
api.HTMLTrackElement.cuechange_event 📋Safari9/20/2016 Firefox7/9/20191022
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.
api.MediaDevices.getUserMedia.secure_context_required Safari9/19/2017 Firefox7/9/2019658
api.RTCDataChannel.negotiated 📋Safari9/19/2017 Firefox7/9/2019658
api.RTCRtpReceiver.getContributingSources.video_tracks_supported Safari3/25/2019 Firefox7/9/2019106
api.RTCRtpReceiver.getSynchronizationSources.video_tracks_supported Safari3/25/2019 Firefox7/9/2019106

2019/5

API First Browser Date Last Browser Date Days Notes
api.InputEvent.data 📋Safari3/27/2017 Firefox5/21/2019785
api.InputEvent.dataTransfer 📋Safari3/27/2017 Firefox5/21/2019785

2019/3

API First Browser Date Last Browser Date Days Notes
api.AbortController 📋Firefox11/14/2017 Safari3/25/2019496
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 📋Firefox11/14/2017 Safari3/25/2019496
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 📋Firefox11/14/2017 Safari3/25/2019496
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 📋Firefox11/14/2017 Safari3/25/2019496
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.CustomElementRegistry.upgrade 📋Firefox10/23/2018 Safari3/25/2019153
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.HTMLSlotElement.assignedElements 📋Firefox3/19/2019 Safari3/25/20196
api.IntersectionObserver 📋Firefox8/8/2017 Safari3/25/2019594
api.IntersectionObserver.IntersectionObserver 📋Firefox8/8/2017 Safari3/25/2019594
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 📋Firefox8/8/2017 Safari3/25/2019594
Edge: Available since Windows Insider Preview Build 14986.
api.IntersectionObserver.observe 📋Firefox8/8/2017 Safari3/25/2019594
api.IntersectionObserver.root 📋Firefox8/8/2017 Safari3/25/2019594
api.IntersectionObserver.rootMargin 📋Firefox8/8/2017 Safari3/25/2019594
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 📋Firefox8/8/2017 Safari3/25/2019594
Edge: Available since Windows Insider Preview Build 14986.
api.IntersectionObserver.thresholds 📋Firefox8/8/2017 Safari3/25/2019594
api.IntersectionObserver.unobserve 📋Firefox8/8/2017 Safari3/25/2019594
Edge: Available since Windows Insider Preview Build 14986.
api.IntersectionObserverEntry 📋Firefox8/8/2017 Safari3/25/2019594
api.IntersectionObserverEntry.boundingClientRect 📋Firefox8/8/2017 Safari3/25/2019594
api.IntersectionObserverEntry.intersectionRatio 📋Firefox8/8/2017 Safari3/25/2019594
api.IntersectionObserverEntry.intersectionRect 📋Firefox8/8/2017 Safari3/25/2019594
api.IntersectionObserverEntry.isIntersecting 📋Firefox8/8/2017 Safari3/25/2019594
api.IntersectionObserverEntry.rootBounds 📋Firefox8/8/2017 Safari3/25/2019594
api.IntersectionObserverEntry.target 📋Firefox8/8/2017 Safari3/25/2019594
api.IntersectionObserverEntry.time 📋Firefox8/8/2017 Safari3/25/2019594
api.MediaDevices.getSupportedConstraints.return_object_property_deviceId 📋Firefox1/26/2016 Safari3/25/20191154
api.MediaDevices.getSupportedConstraints.return_object_property_facingMode 📋Firefox1/26/2016 Safari3/25/20191154
api.MediaDevices.getSupportedConstraints.return_object_property_frameRate 📋Firefox1/26/2016 Safari3/25/20191154
api.MediaDevices.getSupportedConstraints.return_object_property_height 📋Firefox1/26/2016 Safari3/25/20191154
api.MediaDevices.getSupportedConstraints.return_object_property_width 📋Firefox1/26/2016 Safari3/25/20191154
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.keystatuseschange_event 📋Firefox3/7/2017 Safari3/25/2019748
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.load 📋Firefox5/12/2015 Safari3/25/20191413
api.MediaKeySession.message_event 📋Firefox3/7/2017 Safari3/25/2019748
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.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 Firefox6/7/2016 Safari3/25/20191021
api.MediaKeyStatusMap.get 📋Firefox3/8/2016 Safari3/25/20191112
api.MediaKeyStatusMap.has 📋Firefox3/8/2016 Safari3/25/20191112
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 📋Firefox12/15/2015 Safari3/25/20191196
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.PaymentMethodChangeEvent 📋Firefox8/8/2017 Safari3/25/2019594
api.PaymentMethodChangeEvent.PaymentMethodChangeEvent 📋Firefox8/8/2017 Safari3/25/2019594
api.PaymentMethodChangeEvent.methodDetails 📋Firefox8/8/2017 Safari3/25/2019594
api.PaymentMethodChangeEvent.methodName 📋Firefox8/8/2017 Safari3/25/2019594
api.PaymentRequest.paymentmethodchange_event 📋Firefox8/8/2017 Safari3/25/2019594
api.PaymentResponse.payerdetailchange_event 📋Firefox8/8/2017 Safari3/25/2019594
api.PaymentResponse.retry 📋Firefox8/8/2017 Safari3/25/2019594
api.RTCCertificate 📋Firefox11/3/2015 Safari3/25/20191238
api.RTCCertificate.expires 📋Firefox11/3/2015 Safari3/25/20191238
api.RTCPeerConnection.RTCPeerConnection.configuration_certificates_parameter 📋Firefox11/3/2015 Safari3/25/20191238
api.RTCPeerConnection.addTransceiver.init_streams_parameter Firefox3/13/2018 Safari3/25/2019377
api.RTCPeerConnection.generateCertificate_static 📋Firefox6/25/2013 Safari3/25/20192099
api.RTCRtpReceiver.getContributingSources 📋Firefox3/13/2018 Safari3/25/2019377
api.RTCRtpReceiver.getContributingSources.audioLevel 📋Firefox3/13/2018 Safari3/25/2019377
api.RTCRtpReceiver.getContributingSources.audio_tracks_supported Firefox3/13/2018 Safari3/25/2019377
api.RTCRtpReceiver.getContributingSources.source 📋Firefox3/13/2018 Safari3/25/2019377
api.RTCRtpReceiver.getContributingSources.timestamp 📋Firefox3/13/2018 Safari3/25/2019377
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.getStats 📋Firefox8/8/2017 Safari3/25/2019594
api.RTCRtpReceiver.getSynchronizationSources 📋Firefox3/13/2018 Safari3/25/2019377
api.RTCRtpReceiver.getSynchronizationSources.audio_tracks_supported Firefox3/13/2018 Safari3/25/2019377
api.RTCRtpSender.getParameters.return_object_property_encodings 📋Firefox4/26/2016 Safari3/25/20191063
api.RTCRtpSender.getStats 📋Firefox8/8/2017 Safari3/25/2019594
api.RTCRtpSender.setParameters.parameters_headerExtensions_parameter 📋Firefox4/26/2016 Safari3/25/20191063
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 Safari3/25/2019377
api.RTCStatsReport.type_local-candidate 📋Firefox2/4/2014 Safari3/25/20191875
api.RTCStatsReport.type_local-candidate.candidateType 📋Firefox2/4/2014 Safari3/25/20191875
api.RTCStatsReport.type_local-candidate.protocol 📋Firefox12/11/2018 Safari3/25/2019104
api.RTCStatsReport.type_local-candidate.transportId 📋Firefox7/22/2014 Safari3/25/20191707
api.RTCStatsReport.type_remote-candidate 📋Firefox2/4/2014 Safari3/25/20191875
api.RTCStatsReport.type_remote-candidate.candidateType 📋Firefox2/4/2014 Safari3/25/20191875
api.RTCStatsReport.type_remote-candidate.protocol 📋Firefox12/11/2018 Safari3/25/2019104
api.RTCStatsReport.type_remote-candidate.transportId 📋Firefox7/22/2014 Safari3/25/20191707
api.Request.credentials.default_same-origin Firefox6/26/2018 Safari3/25/2019272
api.Request.signal 📋Firefox11/14/2017 Safari3/25/2019496
api.ShadowRoot.styleSheets 📋Firefox10/23/2018 Safari3/25/2019153
api.SourceBuffer.changeType 📋Firefox10/23/2018 Safari3/25/2019153
Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.VTTRegion.lines 📋Firefox3/13/2018 Safari3/25/2019377
api.Worker.Worker.options_name_parameter Firefox8/8/2017 Safari3/25/2019594
api.Event.returnValue 📋Safari6/23/2003 Firefox3/19/20195748
api.InputEvent.inputType 📋Safari3/27/2017 Firefox3/19/2019722
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.Document.hasStorageAccess 📋Safari4/12/2018 Firefox1/29/2019292
api.Document.requestStorageAccess 📋Safari4/12/2018 Firefox1/29/2019292
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).
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 📋Safari3/27/2017 Firefox1/29/2019673
Node.js: Available as a part of the stream/web module.
api.ReadableStream.ReadableStream 📋Safari3/27/2017 Firefox1/29/2019673
api.ReadableStream.cancel 📋Safari3/27/2017 Firefox1/29/2019673
api.ReadableStream.getReader 📋Safari3/27/2017 Firefox1/29/2019673
api.ReadableStream.locked 📋Safari3/27/2017 Firefox1/29/2019673
api.ReadableStream.tee 📋Safari3/27/2017 Firefox1/29/2019673
Node.js: Before 18.10.0 or 16.18.0, teeing a readable byte stream is not supported.
api.ReadableStreamDefaultController 📋Safari9/20/2016 Firefox1/29/2019861
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 Firefox1/29/2019861
api.ReadableStreamDefaultController.desiredSize 📋Safari9/20/2016 Firefox1/29/2019861
api.ReadableStreamDefaultController.enqueue 📋Safari9/20/2016 Firefox1/29/2019861
api.ReadableStreamDefaultController.error 📋Safari9/20/2016 Firefox1/29/2019861
api.ReadableStreamDefaultReader 📋Safari9/20/2016 Firefox1/29/2019861
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 Firefox1/29/2019861
api.ReadableStreamDefaultReader.closed 📋Safari9/20/2016 Firefox1/29/2019861
api.ReadableStreamDefaultReader.read 📋Safari9/20/2016 Firefox1/29/2019861
api.ReadableStreamDefaultReader.releaseLock 📋Safari9/20/2016 Firefox1/29/2019861
api.Response.body 📋Safari3/27/2017 Firefox1/29/2019673
api.ServiceWorkerGlobalScope.messageerror_event 📋Safari4/12/2018 Firefox1/29/2019292
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.
api.Window.open.once_per_event Safari9/19/2017 Firefox1/29/2019497

2018/12

API First Browser Date Last Browser Date Days Notes
api.RTCRtpSender.setParameters 📋Safari9/19/2017 Firefox12/11/2018448
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.ServiceWorkerContainer.startMessages 📋Safari4/12/2018 Firefox12/11/2018243
api.Window.screenLeft 📋Safari6/23/2003 Firefox12/11/20185650
api.Window.screenLeft.relative-multi-screen Safari6/23/2003 Firefox12/11/20185650
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 📋Safari6/23/2003 Firefox12/11/20185650
api.Window.screenTop.relative-multi-screen Safari6/23/2003 Firefox12/11/20185650
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 Firefox12/11/20185650
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.XMLHttpRequest.getAllResponseHeaders.header_names_lowercase Safari9/19/2017 Firefox12/11/2018448

2018/10

API First Browser Date Last Browser Date Days Notes
api.CustomElementRegistry 📋Safari3/27/2017 Firefox10/23/2018575
api.CustomElementRegistry.define 📋Safari3/27/2017 Firefox10/23/2018575
api.CustomElementRegistry.get 📋Safari3/27/2017 Firefox10/23/2018575
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.whenDefined 📋Safari3/27/2017 Firefox10/23/2018575
api.Element.assignedSlot 📋Safari9/20/2016 Firefox10/23/2018763
api.Element.attachShadow 📋Safari9/20/2016 Firefox10/23/2018763
api.Element.securitypolicyviolation_event 📋Safari9/20/2016 Firefox10/23/2018763
api.Element.shadowRoot 📋Safari9/20/2016 Firefox10/23/2018763
api.Element.slot 📋Safari9/20/2016 Firefox10/23/2018763
api.Element.toggleAttribute 📋Safari9/17/2018 Firefox10/23/201836
api.HTMLCanvasElement.getContext.webgl_context.options_powerPreference_parameter 📋Safari3/27/2017 Firefox10/23/2018575
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.HTMLImageElement.decoding 📋Safari4/12/2018 Firefox10/23/2018194
api.HTMLSlotElement 📋Safari9/20/2016 Firefox10/23/2018763
api.HTMLSlotElement.assignedNodes 📋Safari9/20/2016 Firefox10/23/2018763
api.HTMLSlotElement.name 📋Safari9/20/2016 Firefox10/23/2018763
api.HTMLSlotElement.slotchange_event 📋Safari3/27/2017 Firefox10/23/2018575
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.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.ShadowRoot 📋Safari9/20/2016 Firefox10/23/2018763
api.ShadowRoot.activeElement 📋Safari9/20/2016 Firefox10/23/2018763
api.ShadowRoot.elementFromPoint Safari3/27/2017 Firefox10/23/2018575
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 Firefox10/23/2018194
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 Firefox10/23/2018763
api.ShadowRoot.innerHTML 📋Safari9/20/2016 Firefox10/23/2018763
api.ShadowRoot.mode 📋Safari3/27/2017 Firefox10/23/2018575
api.ShadowRoot.pointerLockElement 📋Safari3/27/2017 Firefox10/23/2018575
api.Text.assignedSlot 📋Safari9/20/2016 Firefox10/23/2018763
api.TextDecoder.ignoreBOM 📋Safari3/27/2017 Firefox10/23/2018575
api.Window.customElements 📋Safari3/27/2017 Firefox10/23/2018575
api.WorkerGlobalScope.securitypolicyviolation_event 📋Safari9/20/2016 Firefox10/23/2018763

2018/9

API First Browser Date Last Browser Date Days Notes
api.CustomEvent.worker_support Firefox8/2/2016 Safari9/17/2018776
api.DOMTokenList.replace.boolean_value Firefox6/26/2018 Safari9/17/201883
api.PerformanceResourceTiming.worker_support Firefox5/9/2018 Safari9/17/2018131
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.SVGGeometryElement 📋Firefox4/19/2017 Safari9/17/2018516
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 Safari9/17/201883
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 Safari9/17/201883
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.pathLength 📋Firefox6/26/2018 Safari9/17/201883
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.WEBGL_compressed_texture_astc 📋Firefox4/19/2017 Safari9/17/2018516
api.WEBGL_compressed_texture_astc.getSupportedProfiles 📋Firefox4/19/2017 Safari9/17/2018516
api.DOMMatrixReadOnly.DOMMatrixReadOnly 📋Safari9/19/2017 Firefox9/5/2018351
api.DOMMatrixReadOnly.toJSON 📋Safari9/19/2017 Firefox9/5/2018351
api.DOMPoint.fromPoint_static 📋Safari3/27/2017 Firefox9/5/2018527
api.DOMPointReadOnly.DOMPointReadOnly 📋Safari3/27/2017 Firefox9/5/2018527
api.DOMPointReadOnly.fromPoint_static 📋Safari3/27/2017 Firefox9/5/2018527
api.DOMPointReadOnly.toJSON 📋Safari3/27/2017 Firefox9/5/2018527
api.DOMQuad.getBounds 📋Safari9/19/2017 Firefox9/5/2018351
api.DOMQuad.toJSON 📋Safari9/19/2017 Firefox9/5/2018351
api.DOMRectReadOnly.DOMRectReadOnly 📋Safari3/27/2017 Firefox9/5/2018527
api.DOMRectReadOnly.toJSON 📋Safari3/27/2017 Firefox9/5/2018527
api.Event.srcElement 📋Safari6/23/2003 Firefox9/5/20185553
api.RTCDataChannel.maxPacketLifeTime 📋Safari9/19/2017 Firefox9/5/2018351
api.RTCDataChannel.maxRetransmits 📋Safari9/19/2017 Firefox9/5/2018351

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 📋Safari3/27/2017 Firefox6/26/2018456
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 📋Safari3/27/2017 Firefox6/26/2018456
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 📋Safari3/27/2017 Firefox6/26/2018456
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.EventTarget.addEventListener.options_parameter.options_passive_parameter_default_true_touch Safari4/12/2018 Firefox6/26/201875
api.Request.destination 📋Safari3/27/2017 Firefox6/26/2018456

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 📋Safari3/27/2017 Firefox5/9/2018408
api.PerformanceEntry.worker_support Safari9/19/2017 Firefox5/9/2018232
Node.js: Available as a part of the perf_hooks module.

2018/4

API First Browser Date Last Browser Date Days Notes
api.AbortSignal 📋Firefox11/14/2017 Safari4/12/2018149
api.AbortSignal.abort_event 📋Firefox11/14/2017 Safari4/12/2018149
api.AbortSignal.aborted 📋Firefox11/14/2017 Safari4/12/2018149
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.secure_context_required Firefox1/26/2016 Safari4/12/2018807
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.CanvasPattern.setTransform 📋Firefox10/14/2014 Safari4/12/20181276
api.Client 📋Firefox1/26/2016 Safari4/12/2018807
api.Client.frameType 📋Firefox1/26/2016 Safari4/12/2018807
api.Client.id 📋Firefox1/26/2016 Safari4/12/2018807
api.Client.postMessage 📋Firefox1/26/2016 Safari4/12/2018807
api.Client.type 📋Firefox6/13/2017 Safari4/12/2018303
api.Client.url 📋Firefox1/26/2016 Safari4/12/2018807
api.Clients 📋Firefox1/26/2016 Safari4/12/2018807
api.Clients.claim 📋Firefox1/26/2016 Safari4/12/2018807
api.Clients.get 📋Firefox3/8/2016 Safari4/12/2018765
api.Clients.matchAll 📋Firefox6/13/2017 Safari4/12/2018303
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 Safari4/12/2018807
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 Safari4/12/2018807
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.DataTransfer.items 📋Firefox11/15/2016 Safari4/12/2018513
api.DataTransferItem.webkitGetAsEntry 📋Firefox11/15/2016 Safari4/12/2018513
api.Document.elementsFromPoint 📋Firefox4/26/2016 Safari4/12/2018716
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.ExtendableEvent 📋Firefox1/26/2016 Safari4/12/2018807
api.ExtendableEvent.ExtendableEvent 📋Firefox1/26/2016 Safari4/12/2018807
api.ExtendableEvent.waitUntil 📋Firefox1/26/2016 Safari4/12/2018807
api.ExtendableEvent.waitUntil.async_waitUntil Firefox4/19/2017 Safari4/12/2018358
api.ExtendableMessageEvent 📋Firefox1/26/2016 Safari4/12/2018807
api.ExtendableMessageEvent.ExtendableMessageEvent 📋Firefox1/26/2016 Safari4/12/2018807
api.ExtendableMessageEvent.data 📋Firefox1/26/2016 Safari4/12/2018807
api.ExtendableMessageEvent.lastEventId 📋Firefox1/26/2016 Safari4/12/2018807
api.ExtendableMessageEvent.origin 📋Firefox1/26/2016 Safari4/12/2018807
api.ExtendableMessageEvent.ports 📋Firefox1/26/2016 Safari4/12/2018807
api.ExtendableMessageEvent.source 📋Firefox1/26/2016 Safari4/12/2018807
api.FetchEvent 📋Firefox1/26/2016 Safari4/12/2018807
api.FetchEvent.FetchEvent 📋Firefox1/26/2016 Safari4/12/2018807
api.FetchEvent.clientId 📋Firefox3/8/2016 Safari4/12/2018765
api.FetchEvent.request 📋Firefox1/26/2016 Safari4/12/2018807
api.FetchEvent.respondWith 📋Firefox1/26/2016 Safari4/12/2018807
api.File.webkitRelativePath 📋Firefox11/15/2016 Safari4/12/2018513
Firefox for Android: Always an empty string (bug 1973726).
api.FileSystem 📋Firefox11/15/2016 Safari4/12/2018513
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 Safari4/12/2018513
api.FileSystem.root 📋Firefox11/15/2016 Safari4/12/2018513
api.FileSystemDirectoryEntry 📋Firefox11/15/2016 Safari4/12/2018513
api.FileSystemDirectoryEntry.createReader 📋Firefox11/15/2016 Safari4/12/2018513
api.FileSystemDirectoryEntry.getDirectory 📋Firefox11/15/2016 Safari4/12/2018513
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 Safari4/12/2018513
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 📋Firefox11/15/2016 Safari4/12/2018513
api.FileSystemDirectoryReader.readEntries 📋Firefox11/15/2016 Safari4/12/2018513
api.FileSystemEntry 📋Firefox11/15/2016 Safari4/12/2018513
api.FileSystemEntry.filesystem 📋Firefox11/15/2016 Safari4/12/2018513
api.FileSystemEntry.fullPath 📋Firefox11/15/2016 Safari4/12/2018513
api.FileSystemEntry.getParent 📋Firefox3/7/2017 Safari4/12/2018401
api.FileSystemEntry.isDirectory 📋Firefox11/15/2016 Safari4/12/2018513
api.FileSystemEntry.isFile 📋Firefox11/15/2016 Safari4/12/2018513
api.FileSystemEntry.name 📋Firefox11/15/2016 Safari4/12/2018513
api.FileSystemFileEntry 📋Firefox11/15/2016 Safari4/12/2018513
api.FileSystemFileEntry.file 📋Firefox11/15/2016 Safari4/12/2018513
api.FontFace.display 📋Firefox1/23/2018 Safari4/12/201879
api.FormData.@@iterator Firefox1/26/2016 Safari4/12/2018807
api.FormData.delete 📋Firefox7/2/2015 Safari4/12/20181015
api.FormData.entries Firefox1/26/2016 Safari4/12/2018807
api.FormData.forEach Firefox6/7/2016 Safari4/12/2018674
api.FormData.get 📋Firefox7/2/2015 Safari4/12/20181015
api.FormData.getAll 📋Firefox7/2/2015 Safari4/12/20181015
api.FormData.has 📋Firefox7/2/2015 Safari4/12/20181015
api.FormData.keys Firefox1/26/2016 Safari4/12/2018807
api.FormData.set 📋Firefox7/2/2015 Safari4/12/20181015
api.FormData.values Firefox1/26/2016 Safari4/12/2018807
api.HTMLCanvasElement.getContext.bitmaprenderer_context Firefox4/26/2016 Safari4/12/2018716
api.HTMLInputElement.webkitEntries 📋Firefox11/15/2016 Safari4/12/2018513
api.HTMLInputElement.webkitdirectory 📋Firefox11/15/2016 Safari4/12/2018513
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.HTMLLinkElement.integrity 📋Firefox12/15/2015 Safari4/12/2018849
api.HTMLScriptElement.integrity 📋Firefox12/15/2015 Safari4/12/2018849
api.ImageBitmapRenderingContext 📋Firefox4/26/2016 Safari4/12/2018716
api.ImageBitmapRenderingContext.transferFromImageBitmap 📋Firefox11/15/2016 Safari4/12/2018513
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.Navigator.serviceWorker 📋Firefox1/26/2016 Safari4/12/2018807
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.PaymentRequest 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequest.PaymentRequest 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequest.abort 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequest.canMakePayment 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequest.id 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequest.merchantvalidation_event Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequest.shippingAddress Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequest.shippingOption Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequest.shippingType Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequest.shippingaddresschange_event Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequest.shippingoptionchange_event Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequest.show 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequestUpdateEvent 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequestUpdateEvent.PaymentRequestUpdateEvent 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentRequestUpdateEvent.updateWith 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentResponse 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentResponse.complete 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentResponse.details 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentResponse.methodName 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentResponse.payerEmail 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentResponse.payerName 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentResponse.payerPhone 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentResponse.requestId 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentResponse.shippingAddress 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentResponse.shippingOption 📋Firefox8/8/2017 Safari4/12/2018247
api.PaymentResponse.toJSON Firefox8/8/2017 Safari4/12/2018247
api.ServiceWorker 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorker.error_event 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorker.postMessage 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorker.scriptURL 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorker.state 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorker.statechange_event 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerContainer 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerContainer.controller 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerContainer.controllerchange_event 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerContainer.getRegistration 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerContainer.getRegistrations 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerContainer.message_event 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerContainer.ready 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerContainer.register 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerGlobalScope 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerGlobalScope.activate_event 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerGlobalScope.clients 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerGlobalScope.fetch_event 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerGlobalScope.install_event 📋Firefox1/26/2016 Safari4/12/2018807
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 Safari4/12/2018807
api.ServiceWorkerGlobalScope.registration 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerGlobalScope.skipWaiting 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerRegistration 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerRegistration.active 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerRegistration.installing 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerRegistration.scope 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerRegistration.unregister 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerRegistration.update 📋Firefox1/26/2016 Safari4/12/2018807
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.updateViaCache 📋Firefox11/14/2017 Safari4/12/2018149
api.ServiceWorkerRegistration.updatefound_event 📋Firefox1/26/2016 Safari4/12/2018807
api.ServiceWorkerRegistration.waiting 📋Firefox1/26/2016 Safari4/12/2018807
api.WindowClient 📋Firefox1/26/2016 Safari4/12/2018807
api.WindowClient.focus 📋Firefox1/26/2016 Safari4/12/2018807
api.WindowClient.focused 📋Firefox1/26/2016 Safari4/12/2018807
api.WindowClient.visibilityState 📋Firefox1/26/2016 Safari4/12/2018807
api.caches 📋Firefox9/22/2015 Safari4/12/2018933
api.caches.worker_support Firefox9/22/2015 Safari4/12/2018933
api.fetch.init_referrerPolicy_parameter Firefox3/7/2017 Safari4/12/2018401
api.fetch.init_signal_parameter Firefox11/14/2017 Safari4/12/2018149
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 📋Safari3/27/2017 Firefox3/13/2018351
api.CSSNamespaceRule.prefix 📋Safari3/27/2017 Firefox3/13/2018351
api.DOMMatrixReadOnly.isIdentity 📋Safari9/19/2017 Firefox3/13/2018175
api.Event.composedPath 📋Safari9/20/2016 Firefox3/13/2018539
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.HTMLSelectElement.autocomplete 📋Safari3/21/2016 Firefox3/13/2018722
api.HTMLTextAreaElement.autocomplete 📋Safari3/21/2016 Firefox3/13/2018722
api.MediaStreamTrack.mute_event 📋Safari9/19/2017 Firefox3/13/2018175
api.MediaStreamTrack.muted 📋Safari9/19/2017 Firefox3/13/2018175
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 📋Safari9/19/2017 Firefox3/13/2018175
api.RTCPeerConnection.addTransceiver 📋Safari9/19/2017 Firefox3/13/2018175
api.RTCPeerConnection.addTransceiver.init_direction_parameter Safari9/19/2017 Firefox3/13/2018175
api.RTCPeerConnection.getTransceivers 📋Safari9/19/2017 Firefox3/13/2018175
api.RTCRtpTransceiver 📋Safari9/19/2017 Firefox3/13/2018175
api.RTCRtpTransceiver.direction 📋Safari9/19/2017 Firefox3/13/2018175
api.RTCRtpTransceiver.mid 📋Safari9/19/2017 Firefox3/13/2018175
api.RTCRtpTransceiver.receiver 📋Safari9/19/2017 Firefox3/13/2018175
api.RTCRtpTransceiver.sender 📋Safari9/19/2017 Firefox3/13/2018175
api.RTCRtpTransceiver.stop 📋Safari9/19/2017 Firefox3/13/2018175
api.RTCRtpTransceiver.stopped Safari9/19/2017 Firefox3/13/2018175
api.RTCTrackEvent.transceiver 📋Safari9/19/2017 Firefox3/13/2018175
api.Response.Response.body_parameter_optional Safari3/27/2017 Firefox3/13/2018351
api.VTTRegion 📋Safari10/22/2013 Firefox3/13/20181603
api.VTTRegion.VTTRegion 📋Safari10/22/2013 Firefox3/13/20181603
api.VTTRegion.id 📋Safari10/22/2013 Firefox3/13/20181603
api.VTTRegion.regionAnchorX 📋Safari10/22/2013 Firefox3/13/20181603
api.VTTRegion.regionAnchorY 📋Safari10/22/2013 Firefox3/13/20181603
api.VTTRegion.scroll 📋Safari10/22/2013 Firefox3/13/20181603
api.VTTRegion.viewportAnchorX 📋Safari10/22/2013 Firefox3/13/20181603
api.VTTRegion.viewportAnchorY 📋Safari10/22/2013 Firefox3/13/20181603
api.VTTRegion.width 📋Safari10/22/2013 Firefox3/13/20181603

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.EXT_sRGB 📋Safari9/30/2015 Firefox1/23/2018846
Firefox: Not supported on Windows.
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.Headers.iterate_lexicographically Safari3/27/2017 Firefox11/14/2017232
api.KeyboardEvent.initKeyboardEvent 📋Safari2/2/2004 Firefox11/14/20175034
api.PerformanceObserver 📋Safari9/19/2017 Firefox11/14/201756
Node.js: Available as a part of the perf_hooks module.
api.PerformanceObserver.PerformanceObserver 📋Safari9/19/2017 Firefox11/14/201756
api.PerformanceObserver.disconnect 📋Safari9/19/2017 Firefox11/14/201756
api.PerformanceObserver.observe 📋Safari9/19/2017 Firefox11/14/201756
api.PerformanceObserver.worker_support Safari9/19/2017 Firefox11/14/201756
api.PerformanceObserverEntryList 📋Safari9/19/2017 Firefox11/14/201756
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 Firefox11/14/201756
api.PerformanceObserverEntryList.getEntriesByName 📋Safari9/19/2017 Firefox11/14/201756
api.PerformanceObserverEntryList.getEntriesByType 📋Safari9/19/2017 Firefox11/14/201756
api.RTCPeerConnection.currentRemoteDescription 📋Safari9/19/2017 Firefox11/14/201756
api.Selection.type 📋Safari4/15/2005 Firefox11/14/20174596

2017/9

API First Browser Date Last Browser Date Days Notes
api.HTMLButtonElement.labels 📋Safari7/20/2011 Firefox9/28/20172262
api.HTMLInputElement.labels 📋Safari6/7/2010 Firefox9/28/20172670
api.HTMLLinkElement.as 📋Safari9/20/2016 Firefox9/28/2017373
api.HTMLMeterElement.labels 📋Safari7/25/2012 Firefox9/28/20171891
api.HTMLOutputElement.labels 📋Safari7/20/2011 Firefox9/28/20172262
api.HTMLProgressElement.labels 📋Safari7/25/2012 Firefox9/28/20171891
api.HTMLSelectElement.labels 📋Safari7/20/2011 Firefox9/28/20172262
api.HTMLTextAreaElement.labels 📋Safari7/20/2011 Firefox9/28/20172262
api.PerformanceTiming.secureConnectionStart 📋Safari10/16/2014 Firefox9/28/20171078
api.RTCStatsReport.type_candidate-pair.bytesReceived 📋Safari9/19/2017 Firefox9/28/20179
api.RTCStatsReport.type_candidate-pair.bytesSent 📋Safari9/19/2017 Firefox9/28/20179
api.RTCStatsReport.type_candidate-pair.nominated 📋Safari9/19/2017 Firefox9/28/20179
api.RTCStatsReport.type_candidate-pair.transportId 📋Safari9/19/2017 Firefox9/28/20179
api.AudioContext.createMediaStreamDestination 📋Firefox10/29/2013 Safari9/19/20171421
api.AudioContext.createMediaStreamSource 📋Firefox10/29/2013 Safari9/19/20171421
api.BeforeUnloadEvent.user_interaction Firefox1/26/2016 Safari9/19/2017602
api.CSS.supports_static.optional_parens Firefox8/8/2017 Safari9/19/201742
api.CSSStyleDeclaration.@@iterator Firefox2/24/2015 Safari9/19/2017938
api.Crypto.subtle 📋Firefox12/1/2014 Safari9/19/20171023
api.DOMMatrix 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.DOMMatrix 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.a 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.b 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.c 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.d 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.e 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.f 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.invertSelf 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m11 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m12 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m13 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m14 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m21 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m22 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m23 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m24 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m31 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m32 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m33 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m34 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m41 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m42 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m43 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.m44 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.multiplySelf 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.preMultiplySelf 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.rotateAxisAngleSelf 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.rotateFromVectorSelf 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.rotateSelf 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.scale3dSelf 📋Firefox10/14/2014 Safari9/19/20171071
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 Safari9/19/20171071
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 Safari9/19/20171071
api.DOMMatrix.skewXSelf 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.skewYSelf 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrix.translateSelf 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.a 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.b 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.c 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.d 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.e 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.f 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.flipX 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.flipY 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.inverse 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.is2D 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m11 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m12 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m13 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m14 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m21 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m22 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m23 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m24 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m31 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m32 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m33 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m34 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m41 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m42 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m43 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.m44 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.multiply 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.rotate 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.rotateAxisAngle 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.rotateFromVector 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.scale 📋Firefox10/14/2014 Safari9/19/20171071
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 Safari9/19/20171071
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 Safari9/19/20171071
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 Safari9/19/20171071
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 Safari9/19/20171071
api.DOMMatrixReadOnly.toFloat64Array 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.toString Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.transformPoint 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMMatrixReadOnly.translate 📋Firefox10/14/2014 Safari9/19/20171071
api.DOMQuad 📋Firefox7/22/2014 Safari9/19/20171155
api.DOMQuad.DOMQuad 📋Firefox7/22/2014 Safari9/19/20171155
api.DOMQuad.p1 📋Firefox7/22/2014 Safari9/19/20171155
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 Safari9/19/20171155
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 Safari9/19/20171155
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 Safari9/19/20171155
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.HTMLCanvasElement.captureStream 📋Firefox12/15/2015 Safari9/19/2017644
api.HTMLCanvasElement.toBlob 📋Firefox1/8/2013 Safari9/19/20171715
api.HTMLCanvasElement.toBlob.quality_parameter Firefox10/29/2013 Safari9/19/20171421
api.HTMLCanvasElement.toBlob.type_parameter_jpeg Firefox1/8/2013 Safari9/19/20171715
api.HTMLCanvasElement.toBlob.type_parameter_png Firefox1/8/2013 Safari9/19/20171715
api.HTMLCanvasElement.toDataURL.type_parameter_jpeg Firefox1/8/2013 Safari9/19/20171715
api.HTMLCanvasElement.toDataURL.type_parameter_png Firefox1/8/2013 Safari9/19/20171715
api.HTMLMediaElement.srcObject 📋Firefox11/3/2015 Safari9/19/2017686
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).
api.History.scrollRestoration 📋Firefox4/26/2016 Safari9/19/2017511
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.MediaDeviceInfo.toJSON 📋Firefox11/3/2015 Safari9/19/2017686
api.MediaDevices 📋Firefox10/14/2014 Safari9/19/20171071
api.MediaDevices.devicechange_event 📋Firefox3/7/2017 Safari9/19/2017196
api.MediaDevices.getSupportedConstraints 📋Firefox1/26/2016 Safari9/19/2017602
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 📋Firefox1/26/2016 Safari9/19/2017602
api.MediaStream.active 📋Firefox3/7/2017 Safari9/19/2017196
api.MediaStream.addTrack 📋Firefox1/26/2016 Safari9/19/2017602
api.MediaStream.addtrack_event 📋Firefox11/15/2016 Safari9/19/2017308
api.MediaStream.clone 📋Firefox8/2/2016 Safari9/19/2017413
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 📋Firefox9/20/2016 Safari9/19/2017364
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 📋Firefox9/22/2015 Safari9/19/2017728
api.MediaStream.removeTrack 📋Firefox1/26/2016 Safari9/19/2017602
api.MediaStreamAudioDestinationNode 📋Firefox10/29/2013 Safari9/19/20171421
api.MediaStreamAudioDestinationNode.stream 📋Firefox10/29/2013 Safari9/19/20171421
api.MediaStreamAudioSourceNode 📋Firefox10/29/2013 Safari9/19/20171421
api.MediaStreamTrack 📋Firefox6/25/2013 Safari9/19/20171547
api.MediaStreamTrack.applyConstraints 📋Firefox12/15/2015 Safari9/19/2017644
api.MediaStreamTrack.applyConstraints.deviceId_constraint 📋Firefox12/15/2015 Safari9/19/2017644
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.echoCancellation_constraint 📋Firefox11/15/2016 Safari9/19/2017308
api.MediaStreamTrack.applyConstraints.facingMode_constraint 📋Firefox11/15/2016 Safari9/19/2017308
api.MediaStreamTrack.applyConstraints.frameRate_constraint 📋Firefox11/15/2016 Safari9/19/2017308
api.MediaStreamTrack.applyConstraints.height_constraint 📋Firefox11/15/2016 Safari9/19/2017308
api.MediaStreamTrack.applyConstraints.width_constraint 📋Firefox11/15/2016 Safari9/19/2017308
api.MediaStreamTrack.clone 📋Firefox8/2/2016 Safari9/19/2017413
api.MediaStreamTrack.enabled 📋Firefox9/17/2013 Safari9/19/20171463
api.MediaStreamTrack.ended_event 📋Firefox11/15/2016 Safari9/19/2017308
api.MediaStreamTrack.getConstraints 📋Firefox11/15/2016 Safari9/19/2017308
api.MediaStreamTrack.getSettings 📋Firefox11/15/2016 Safari9/19/2017308
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 📋Firefox11/15/2016 Safari9/19/2017308
api.MediaStreamTrack.stop 📋Firefox12/1/2014 Safari9/19/20171023
api.MediaStreamTrackEvent 📋Firefox11/15/2016 Safari9/19/2017308
api.MediaStreamTrackEvent.MediaStreamTrackEvent 📋Firefox11/15/2016 Safari9/19/2017308
api.MediaStreamTrackEvent.track 📋Firefox11/15/2016 Safari9/19/2017308
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.resourcetimingbufferfull_event 📋Firefox1/13/2015 Safari9/19/2017980
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.PerformanceEntry.toJSON 📋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.nextHopProtocol 📋Firefox3/8/2016 Safari9/19/2017560
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.PerformanceResourceTiming.secureConnectionStart 📋Firefox1/13/2015 Safari9/19/2017980
api.PerformanceResourceTiming.toJSON 📋Firefox1/13/2015 Safari9/19/2017980
api.RTCDataChannel 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.binaryType 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.binaryType.arraybuffer_value Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.binaryType.blob_value Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.bufferedAmount 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.bufferedAmountLowThreshold 📋Firefox1/26/2016 Safari9/19/2017602
api.RTCDataChannel.bufferedamountlow_event 📋Firefox1/26/2016 Safari9/19/2017602
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 Safari9/19/20171547
api.RTCDataChannel.close_event 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.error_event 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.id 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.label 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.message_event 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.open_event 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.ordered 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.protocol 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.readyState 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannel.send 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannelEvent 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannelEvent.RTCDataChannelEvent 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCDataChannelEvent.channel 📋Firefox6/25/2013 Safari9/19/20171547
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.RTCPeerConnection.configuration_bundlePolicy_parameter 📋Firefox11/3/2015 Safari9/19/2017686
api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.credential_parameter 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.urls_parameter 📋Firefox3/31/2015 Safari9/19/2017903
api.RTCPeerConnection.RTCPeerConnection.configuration_iceServers_parameter.username_parameter 📋Firefox8/6/2013 Safari9/19/20171505
api.RTCPeerConnection.RTCPeerConnection.configuration_iceTransportPolicy_parameter 📋Firefox11/3/2015 Safari9/19/2017686
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.addIceCandidate.returns_promise Firefox3/31/2015 Safari9/19/2017903
api.RTCPeerConnection.addTrack 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.close 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.createAnswer 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.createAnswer.returns_promise Firefox3/31/2015 Safari9/19/2017903
api.RTCPeerConnection.createDataChannel 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.createOffer 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.createOffer.returns_promise Firefox3/31/2015 Safari9/19/2017903
api.RTCPeerConnection.currentLocalDescription 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.datachannel_event 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.getConfiguration 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.getReceivers 📋Firefox12/1/2014 Safari9/19/20171023
api.RTCPeerConnection.getSenders 📋Firefox12/1/2014 Safari9/19/20171023
api.RTCPeerConnection.getStats 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCPeerConnection.getStats.returns_promise Firefox3/31/2015 Safari9/19/2017903
api.RTCPeerConnection.getStats.selector_parameter 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.pendingLocalDescription 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.pendingRemoteDescription 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.remoteDescription 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.removeTrack 📋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.setLocalDescription.returns_promise Firefox3/31/2015 Safari9/19/2017903
api.RTCPeerConnection.setRemoteDescription 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCPeerConnection.setRemoteDescription.returns_promise Firefox3/31/2015 Safari9/19/2017903
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.RTCPeerConnection.track_event 📋Firefox6/25/2013 Safari9/19/20171547
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.getParameters 📋Firefox4/26/2016 Safari9/19/2017511
api.RTCRtpSender.getParameters.return_object_property_headerExtensions 📋Firefox4/26/2016 Safari9/19/2017511
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 Safari9/19/20171023
api.RTCRtpSender.setParameters.parameters_encodings_parameter 📋Firefox4/26/2016 Safari9/19/2017511
api.RTCRtpSender.setParameters.parameters_encodings_parameter.maxBitrate 📋Firefox4/26/2016 Safari9/19/2017511
api.RTCRtpSender.setParameters.parameters_encodings_parameter.priority 📋Firefox4/26/2016 Safari9/19/2017511
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 Safari9/19/2017511
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.RTCStatsReport 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCStatsReport.@@iterator Firefox8/2/2016 Safari9/19/2017413
api.RTCStatsReport.entries 📋Firefox8/2/2016 Safari9/19/2017413
api.RTCStatsReport.forEach 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCStatsReport.get 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCStatsReport.has 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCStatsReport.keys 📋Firefox8/2/2016 Safari9/19/2017413
api.RTCStatsReport.size 📋Firefox8/2/2016 Safari9/19/2017413
api.RTCStatsReport.type_candidate-pair 📋Firefox4/29/2014 Safari9/19/20171239
api.RTCStatsReport.type_candidate-pair.localCandidateId 📋Firefox4/29/2014 Safari9/19/20171239
api.RTCStatsReport.type_candidate-pair.remoteCandidateId 📋Firefox4/29/2014 Safari9/19/20171239
api.RTCStatsReport.type_candidate-pair.state 📋Firefox4/29/2014 Safari9/19/20171239
api.RTCStatsReport.type_inbound-rtp 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCStatsReport.type_inbound-rtp.ssrc 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCStatsReport.type_outbound-rtp 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCStatsReport.type_outbound-rtp.ssrc 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCStatsReport.type_remote-inbound-rtp 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCStatsReport.type_remote-inbound-rtp.ssrc 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCStatsReport.type_remote-outbound-rtp 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCStatsReport.type_remote-outbound-rtp.ssrc 📋Firefox2/4/2014 Safari9/19/20171323
api.RTCStatsReport.values Firefox8/2/2016 Safari9/19/2017413
api.RTCTrackEvent 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCTrackEvent.RTCTrackEvent 📋Firefox4/26/2016 Safari9/19/2017511
api.RTCTrackEvent.receiver 📋Firefox12/1/2014 Safari9/19/20171023
api.RTCTrackEvent.streams 📋Firefox6/25/2013 Safari9/19/20171547
api.RTCTrackEvent.track 📋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.SubtleCrypto.deriveBits 📋Firefox12/1/2014 Safari9/19/20171023
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 Safari9/19/20171023
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 Safari9/19/20171023
api.SubtleCrypto.deriveKey.derivedKeyAlgorithm_option_hmac 📋Firefox12/1/2014 Safari9/19/20171023
api.SubtleCrypto.worker_support Firefox8/2/2016 Safari9/19/2017413
api.URL.toJSON 📋Firefox6/13/2017 Safari9/19/201798
api.URLSearchParams.URLSearchParams.record Firefox6/13/2017 Safari9/19/201798
api.URLSearchParams.URLSearchParams.sequence Firefox4/19/2017 Safari9/19/2017153
api.URLSearchParams.sort 📋Firefox6/13/2017 Safari9/19/201798
api.Window.beforeunload_event.preventdefault_activation Firefox8/16/2011 Safari9/19/20172226
api.origin 📋Firefox6/13/2017 Safari9/19/201798
api.performance.worker_support Firefox12/1/2014 Safari9/19/20171023
Node.js: Available as a part of the perf_hooks module.

2017/8

API First Browser Date Last Browser Date Days Notes
api.CSSStyleSheet.insertRule.index_parameter_optional Safari6/23/2003 Firefox8/8/20175160
api.DOMTokenList.remove_duplicates Safari9/20/2016 Firefox8/8/2017322
api.Geolocation.secure_context_required Safari9/20/2016 Firefox8/8/2017322
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 Firefox8/8/2017322
api.GeolocationPosition.secure_context_required Safari9/20/2016 Firefox8/8/2017322
api.GeolocationPositionError.secure_context_required Safari9/20/2016 Firefox8/8/2017322
api.Navigator.geolocation.secure_context_required Safari9/20/2016 Firefox8/8/2017322
api.SVGRadialGradientElement.fr 📋Safari10/22/2013 Firefox8/8/20171386
api.Selection.collapse.node_parameter_nullable Safari4/15/2005 Firefox8/8/20174498
api.Selection.collapse.offset_parameter_optional Safari4/15/2005 Firefox8/8/20174498
api.Selection.containsNode.partialContainment_parameter_optional Safari3/18/2008 Firefox8/8/20173430
api.Selection.empty 📋Safari4/15/2005 Firefox8/8/20174498
api.Selection.extend.offset_parameter_optional Safari3/18/2008 Firefox8/8/20173430
api.Selection.setPosition 📋Safari4/15/2005 Firefox8/8/20174498

2017/6

API First Browser Date Last Browser Date Days Notes
api.ProgressEvent.worker_support Safari9/20/2016 Firefox6/13/2017266
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.Request.Request.cross_origin_stripped Safari3/27/2017 Firefox6/13/201778
api.URL.toString 📋Safari10/22/2013 Firefox6/13/20171330

2017/4

API First Browser Date Last Browser Date Days Notes
api.AudioParam.maxValue 📋Safari7/25/2012 Firefox4/19/20171729
api.AudioParam.minValue 📋Safari7/25/2012 Firefox4/19/20171729
api.CSSNamespaceRule 📋Safari3/27/2017 Firefox4/19/201723
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.HTMLMediaElement.play.returns_promise Safari9/20/2016 Firefox4/19/2017211
api.MouseEvent.x 📋Safari3/18/2008 Firefox4/19/20173319
api.MouseEvent.y 📋Safari3/18/2008 Firefox4/19/20173319
api.Node.getRootNode 📋Safari3/27/2017 Firefox4/19/201723
api.Selection.setBaseAndExtent 📋Safari4/15/2005 Firefox4/19/20174387
api.WEBGL_debug_renderer_info 📋Safari3/21/2016 Firefox4/19/2017394
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).

2017/3

API First Browser Date Last Browser Date Days Notes
api.CSS.escape_static 📋Firefox7/22/2014 Safari3/27/2017979
api.CanvasRenderingContext2D.resetTransform 📋Firefox2/24/2015 Safari3/27/2017762
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.ClipboardEvent 📋Firefox6/25/2013 Safari3/27/20171371
api.ClipboardEvent.clipboardData 📋Firefox6/25/2013 Safari3/27/20171371
api.DOMException.DOMException 📋Firefox3/31/2015 Safari3/27/2017727
api.DOMPoint 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMPoint.DOMPoint 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMPoint.w 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMPoint.x 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMPoint.y 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMPoint.z 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMPointReadOnly 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMPointReadOnly.w 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMPointReadOnly.x 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMPointReadOnly.y 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMPointReadOnly.z 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMRect 📋Firefox2/4/2014 Safari3/27/20171147
api.DOMRect.DOMRect 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMRect.x 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMRect.y 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMRectList 📋Firefox2/4/2014 Safari3/27/20171147
api.DOMRectReadOnly 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMRectReadOnly.x 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMRectReadOnly.y 📋Firefox7/22/2014 Safari3/27/2017979
api.DOMTokenList.@@iterator Firefox2/24/2015 Safari3/27/2017762
api.DOMTokenList.entries Firefox11/15/2016 Safari3/27/2017132
api.DOMTokenList.forEach Firefox11/15/2016 Safari3/27/2017132
api.DOMTokenList.keys Firefox11/15/2016 Safari3/27/2017132
api.DOMTokenList.replace 📋Firefox9/20/2016 Safari3/27/2017188
api.DOMTokenList.supports 📋Firefox9/20/2016 Safari3/27/2017188
api.DOMTokenList.values Firefox11/15/2016 Safari3/27/2017132
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 📋Firefox11/15/2016 Safari3/27/2017132
api.Document.pointerLockElement 📋Firefox11/15/2016 Safari3/27/2017132
api.Document.pointerlockchange_event 📋Firefox11/15/2016 Safari3/27/2017132
api.Document.pointerlockerror_event 📋Firefox11/15/2016 Safari3/27/2017132
api.Document.rootElement 📋Firefox3/7/2017 Safari3/27/201720
api.Element.getAttributeNames 📋Firefox3/8/2016 Safari3/27/2017384
api.Element.requestPointerLock 📋Firefox11/15/2016 Safari3/27/2017132
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.Element.scroll 📋Firefox2/24/2015 Safari3/27/2017762
api.Element.scroll.options_left_parameter Firefox2/24/2015 Safari3/27/2017762
api.Element.scroll.options_top_parameter Firefox2/24/2015 Safari3/27/2017762
api.Element.scrollBy 📋Firefox2/24/2015 Safari3/27/2017762
api.Element.scrollBy.options_left_parameter Firefox2/24/2015 Safari3/27/2017762
api.Element.scrollBy.options_top_parameter Firefox2/24/2015 Safari3/27/2017762
api.Element.scrollTo 📋Firefox2/24/2015 Safari3/27/2017762
api.Element.scrollTo.options_left_parameter Firefox2/24/2015 Safari3/27/2017762
api.Element.scrollTo.options_top_parameter Firefox2/24/2015 Safari3/27/2017762
api.File.File 📋Firefox3/18/2014 Safari3/27/20171105
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.HTMLButtonElement.reportValidity 📋Firefox9/20/2016 Safari3/27/2017188
api.HTMLCanvasElement.getContext.webgl_context.options_alpha_parameter 📋Firefox6/10/2014 Safari3/27/20171021
api.HTMLCanvasElement.getContext.webgl_context.options_failIfMajorPerformanceCaveat_parameter 📋Firefox9/22/2015 Safari3/27/2017552
api.HTMLElement.toggle_event 📋Firefox9/20/2016 Safari3/27/2017188
api.HTMLElement.toggle_event.details_elements 📋Firefox9/20/2016 Safari3/27/2017188
api.HTMLFieldSetElement.reportValidity 📋Firefox9/20/2016 Safari3/27/2017188
api.HTMLFormElement.reportValidity 📋Firefox9/20/2016 Safari3/27/2017188
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.HTMLInputElement.minLength 📋Firefox1/24/2017 Safari3/27/201762
api.HTMLInputElement.reportValidity 📋Firefox9/20/2016 Safari3/27/2017188
api.HTMLObjectElement.reportValidity 📋Firefox9/20/2016 Safari3/27/2017188
api.HTMLOutputElement.reportValidity 📋Firefox9/20/2016 Safari3/27/2017188
api.HTMLSelectElement.reportValidity 📋Firefox9/20/2016 Safari3/27/2017188
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.HTMLTextAreaElement.minLength 📋Firefox1/24/2017 Safari3/27/201762
api.HTMLTextAreaElement.reportValidity 📋Firefox9/20/2016 Safari3/27/2017188
api.Headers 📋Firefox7/2/2015 Safari3/27/2017634
api.Headers.@@iterator Firefox1/26/2016 Safari3/27/2017426
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.entries Firefox1/26/2016 Safari3/27/2017426
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.keys Firefox1/26/2016 Safari3/27/2017426
api.Headers.set 📋Firefox7/2/2015 Safari3/27/2017634
api.Headers.values Firefox1/26/2016 Safari3/27/2017426
api.IDBCursor.continuePrimaryKey 📋Firefox1/31/2012 Safari3/27/20171882
api.IDBCursor.key.binary_keys Firefox1/24/2017 Safari3/27/201762
api.IDBDatabase.close_event 📋Firefox11/15/2016 Safari3/27/2017132
api.IDBIndex.getAll 📋Firefox1/26/2016 Safari3/27/2017426
api.IDBIndex.getAllKeys 📋Firefox1/26/2016 Safari3/27/2017426
api.IDBIndex.name.renaming_through_name_setter Firefox9/20/2016 Safari3/27/2017188
api.IDBKeyRange.includes 📋Firefox6/7/2016 Safari3/27/2017293
api.IDBObjectStore.getAll 📋Firefox1/26/2016 Safari3/27/2017426
api.IDBObjectStore.getAllKeys 📋Firefox1/26/2016 Safari3/27/2017426
api.IDBObjectStore.getKey 📋Firefox1/24/2017 Safari3/27/201762
api.IDBObjectStore.name.renaming_through_name_setter Firefox9/20/2016 Safari3/27/2017188
api.IDBObjectStore.openKeyCursor 📋Firefox1/26/2016 Safari3/27/2017426
api.IDBTransaction.objectStoreNames 📋Firefox1/31/2012 Safari3/27/20171882
api.InputEvent 📋Firefox7/22/2014 Safari3/27/2017979
api.InputEvent.InputEvent 📋Firefox7/22/2014 Safari3/27/2017979
api.KeyboardEvent.code 📋Firefox5/12/2015 Safari3/27/2017685
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 📋Firefox8/28/2012 Safari3/27/20171672
api.KeyboardEvent.getModifierState.key_parameter_alt Firefox8/28/2012 Safari3/27/20171672
api.KeyboardEvent.getModifierState.key_parameter_altgraph 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_meta Firefox8/28/2012 Safari3/27/20171672
api.KeyboardEvent.getModifierState.key_parameter_shift Firefox8/28/2012 Safari3/27/20171672
api.KeyboardEvent.isComposing 📋Firefox7/22/2014 Safari3/27/2017979
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.dead_key Firefox3/31/2015 Safari3/27/2017727
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.MediaSource.clearLiveSeekableRange 📋Firefox11/15/2016 Safari3/27/2017132
Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.MediaSource.setLiveSeekableRange 📋Firefox11/15/2016 Safari3/27/2017132
Safari on iOS: Exposed in Mobile Safari on iPad but not on iPhone.
api.MediaSource.sourceended_event 📋Firefox11/3/2015 Safari3/27/2017510
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 Safari3/27/2017510
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.Navigator.getGamepads 📋Firefox4/29/2014 Safari3/27/20171063
api.Navigator.languages 📋Firefox9/2/2014 Safari3/27/2017937
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.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.Request.init_referrer_parameter 📋Firefox6/7/2016 Safari3/27/2017293
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 📋Firefox8/2/2016 Safari3/27/2017237
api.Request.cache.only-if-cached Firefox11/15/2016 Safari3/27/2017132
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 📋Firefox1/24/2017 Safari3/27/201762
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.mode.navigate_mode Firefox4/26/2016 Safari3/27/2017335
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.Response.accept_readablestream 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.error_static 📋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.redirect_static 📋Firefox7/2/2015 Safari3/27/2017634
api.Response.redirected 📋Firefox9/20/2016 Safari3/27/2017188
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.SourceBuffer.abort_event 📋Firefox11/3/2015 Safari3/27/2017510
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 Safari3/27/2017510
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 Safari3/27/2017510
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 Safari3/27/2017510
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 Safari3/27/2017510
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 Safari3/27/2017510
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 Safari3/27/2017510
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.TextDecoder 📋Firefox2/19/2013 Safari3/27/20171497
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 Safari3/27/20171497
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 Safari3/27/20171497
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 Safari3/27/20171497
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 Safari3/27/2017762
api.TextDecoder.worker_support Firefox4/2/2013 Safari3/27/20171455
api.TextEncoder 📋Firefox1/8/2013 Safari3/27/20171539
Node.js: Available as a part of the util module.
api.TextEncoder.TextEncoder 📋Firefox1/8/2013 Safari3/27/20171539
api.TextEncoder.encode 📋Firefox1/8/2013 Safari3/27/20171539
api.TextEncoder.encoding 📋Firefox1/8/2013 Safari3/27/20171539
api.TextEncoder.worker_support Firefox4/2/2013 Safari3/27/20171455
api.URL.searchParams 📋Firefox4/29/2014 Safari3/27/20171063
Node.js: An object matching the URLSearchParams interface is returned, but it contains no data.
api.URLSearchParams 📋Firefox4/29/2014 Safari3/27/20171063
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 Safari3/27/2017426
api.URLSearchParams.URLSearchParams 📋Firefox4/29/2014 Safari3/27/20171063
api.URLSearchParams.URLSearchParams.USVString Firefox4/29/2014 Safari3/27/20171063
api.URLSearchParams.append 📋Firefox4/29/2014 Safari3/27/20171063
api.URLSearchParams.entries 📋Firefox1/26/2016 Safari3/27/2017426
api.URLSearchParams.forEach 📋Firefox1/26/2016 Safari3/27/2017426
api.URLSearchParams.get 📋Firefox4/29/2014 Safari3/27/20171063
api.URLSearchParams.getAll 📋Firefox4/29/2014 Safari3/27/20171063
api.URLSearchParams.has 📋Firefox4/29/2014 Safari3/27/20171063
api.URLSearchParams.keys 📋Firefox1/26/2016 Safari3/27/2017426
api.URLSearchParams.set 📋Firefox4/29/2014 Safari3/27/20171063
api.URLSearchParams.toString 📋Firefox4/29/2014 Safari3/27/20171063
api.URLSearchParams.values 📋Firefox1/26/2016 Safari3/27/2017426
api.Window.languagechange_event 📋Firefox9/2/2014 Safari3/27/2017937
api.Window.scroll.options_left_parameter Firefox2/24/2015 Safari3/27/2017762
api.Window.scroll.options_top_parameter Firefox2/24/2015 Safari3/27/2017762
api.Window.scrollBy.options_left_parameter Firefox2/24/2015 Safari3/27/2017762
api.Window.scrollBy.options_top_parameter Firefox2/24/2015 Safari3/27/2017762
api.Window.scrollTo.options_left_parameter Firefox2/24/2015 Safari3/27/2017762
api.Window.scrollTo.options_top_parameter Firefox2/24/2015 Safari3/27/2017762
api.WorkerNavigator.languages 📋Firefox9/2/2014 Safari3/27/2017937
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.crypto.worker_support Firefox8/2/2016 Safari3/27/2017237
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.
api.fetch.blob_data_support Firefox7/2/2015 Safari3/27/2017634
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.Event.composed 📋Safari9/20/2016 Firefox3/7/2017168
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.Node.selectstart_event 📋Safari4/15/2005 Firefox3/7/20174344

2017/1

API First Browser Date Last Browser Date Days Notes
api.CanvasRenderingContext2D.imageSmoothingEnabled 📋Safari3/21/2016 Firefox1/24/2017309
api.DOMTokenList.trim_whitespace Safari9/20/2016 Firefox1/24/2017126
api.Element.animationend_event 📋Safari9/30/2015 Firefox1/24/2017482
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 Firefox1/24/2017482
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 Firefox1/24/2017482
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.transitionend_event 📋Safari10/22/2013 Firefox1/24/20171190
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.SVGElement.blur 📋Safari10/26/2007 Firefox1/24/20173378
api.SVGElement.dataset 📋Safari7/20/2011 Firefox1/24/20172015
api.SVGElement.focus 📋Safari10/26/2007 Firefox1/24/20173378
api.SVGElement.tabIndex 📋Safari10/16/2014 Firefox1/24/2017831
api.ValidityState.tooShort 📋Safari9/20/2016 Firefox1/24/2017126

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
api.EventTarget.addEventListener.options_parameter.options_once_parameter 📋Safari9/20/2016 Firefox11/15/201656
api.NodeList.entries Safari9/20/2016 Firefox11/15/201656
api.NodeList.forEach 📋Safari9/20/2016 Firefox11/15/201656
api.NodeList.keys Safari9/20/2016 Firefox11/15/201656
api.NodeList.values Safari9/20/2016 Firefox11/15/201656

2016/9

API First Browser Date Last Browser Date Days Notes
api.CharacterData.after 📋Firefox9/20/2016 Safari9/20/2016
api.CharacterData.before 📋Firefox9/20/2016 Safari9/20/2016
api.CharacterData.replaceWith 📋Firefox9/20/2016 Safari9/20/2016
api.DOMTokenList.value 📋Firefox6/7/2016 Safari9/20/2016105
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.append 📋Firefox9/20/2016 Safari9/20/2016
api.Document.execCommand.copy Firefox9/22/2015 Safari9/20/2016364
api.Document.execCommand.cut Firefox9/22/2015 Safari9/20/2016364
api.Document.fonts 📋Firefox9/22/2015 Safari9/20/2016364
api.Document.prepend 📋Firefox9/20/2016 Safari9/20/2016
api.DocumentFragment.append 📋Firefox9/20/2016 Safari9/20/2016
api.DocumentFragment.prepend 📋Firefox9/20/2016 Safari9/20/2016
api.DocumentType.after 📋Firefox9/20/2016 Safari9/20/2016
api.DocumentType.before 📋Firefox9/20/2016 Safari9/20/2016
api.DocumentType.replaceWith 📋Firefox9/20/2016 Safari9/20/2016
api.Element.after 📋Firefox9/20/2016 Safari9/20/2016
api.Element.append 📋Firefox9/20/2016 Safari9/20/2016
api.Element.before 📋Firefox9/20/2016 Safari9/20/2016
api.Element.prepend 📋Firefox9/20/2016 Safari9/20/2016
api.Element.replaceWith 📋Firefox9/20/2016 Safari9/20/2016
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.EventTarget.addEventListener.options_parameter Firefox9/20/2016 Safari9/20/2016
api.EventTarget.addEventListener.options_parameter.options_capture_parameter 📋Firefox9/20/2016 Safari9/20/2016
api.EventTarget.addEventListener.options_parameter.options_passive_parameter 📋Firefox9/20/2016 Safari9/20/2016
api.EventTarget.removeEventListener.options_parameter Firefox9/20/2016 Safari9/20/2016
api.File.lastModified 📋Firefox8/28/2012 Safari9/20/20161484
api.FontFace 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFace.FontFace 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFace.family 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFace.featureSettings 📋Firefox9/22/2015 Safari9/20/2016364
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
api.FontFace.load 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFace.loaded 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFace.status 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFace.stretch 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFace.style 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFace.unicodeRange 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFace.weight 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet 📋Firefox9/22/2015 Safari9/20/2016364
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 Safari9/20/2016364
api.FontFaceSet.add 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.check 📋Firefox9/22/2015 Safari9/20/2016364
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.FontFaceSet.clear 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.delete 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.entries Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.forEach Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.has Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.keys Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.load 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.loading_event 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.loadingdone_event 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.loadingerror_event 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.ready 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.size Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.status 📋Firefox9/22/2015 Safari9/20/2016364
api.FontFaceSet.values Firefox9/22/2015 Safari9/20/2016364
api.HTMLAnchorElement.password 📋Firefox12/10/2013 Safari9/20/20161015
api.HTMLAnchorElement.username 📋Firefox12/10/2013 Safari9/20/20161015
api.HTMLAreaElement.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.HTMLAreaElement.password 📋Firefox12/10/2013 Safari9/20/20161015
api.HTMLAreaElement.username 📋Firefox12/10/2013 Safari9/20/20161015
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.HTMLDetailsElement 📋Safari7/25/2012 Firefox9/20/20161518
api.HTMLDetailsElement.open 📋Safari7/25/2012 Firefox9/20/20161518
api.HTMLLinkElement.crossOrigin 📋Firefox1/8/2013 Safari9/20/20161351
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 Firefox11/3/2015 Safari9/20/2016322
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.IDBVersionChangeEvent 📋Firefox10/29/2013 Safari9/20/20161057
api.IDBVersionChangeEvent.worker_support Firefox3/31/2015 Safari9/20/2016539
api.Node.isConnected 📋Firefox9/20/2016 Safari9/20/2016
api.NodeList.@@iterator 📋Firefox2/24/2015 Safari9/20/2016574
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.SpeechSynthesisErrorEvent 📋Safari10/22/2013 Firefox9/20/20161064
api.SpeechSynthesisErrorEvent.error 📋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

2016/8

API First Browser Date Last Browser Date Days Notes
api.CSSKeyframeRule 📋Safari9/30/2015 Firefox8/2/2016307
api.CSSKeyframesRule 📋Safari3/21/2016 Firefox8/2/2016134
api.CanvasRenderingContext2D.ellipse 📋Safari9/30/2015 Firefox8/2/2016307
api.Document.scrollingElement 📋Safari9/30/2015 Firefox8/2/2016307
api.Element.insertAdjacentElement 📋Safari10/26/2007 Firefox8/2/20163203
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.insertAdjacentText 📋Safari6/8/2009 Firefox8/2/20162612
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.Node.isSameNode 📋Safari10/26/2007 Firefox8/2/20163203
api.Path2D.ellipse 📋Safari9/30/2015 Firefox8/2/2016307

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_blend_minmax 📋Safari9/30/2015 Firefox6/7/2016251
Firefox: Not supported on Windows.
api.EXT_frag_depth 📋Safari9/30/2015 Firefox6/7/2016251
api.EXT_shader_texture_lod 📋Safari10/16/2014 Firefox6/7/2016600
api.EXT_texture_filter_anisotropic 📋Safari3/21/2016 Firefox6/7/201678

2016/4

API First Browser Date Last Browser Date Days Notes
api.FileReader.worker_support Safari7/25/2012 Firefox4/26/20161371

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 Firefox1/26/2016 Safari3/21/201655
api.HTMLElement.innerText 📋Safari6/23/2003 Firefox3/8/20164642
api.HTMLScriptElement.innerText 📋Safari10/26/2007 Firefox3/8/20163056
api.Window.storage_event 📋Safari6/8/2009 Firefox3/8/20162465

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.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.AnimationEvent 📋Firefox8/6/2013 Safari9/30/2015785
api.AnimationEvent.animationName 📋Firefox6/21/2011 Safari9/30/20151562
api.AnimationEvent.elapsedTime 📋Firefox6/21/2011 Safari9/30/20151562
api.AudioContext.close 📋Firefox8/11/2015 Safari9/30/201550
api.AudioContext.resume 📋Firefox8/11/2015 Safari9/30/201550
api.AudioContext.suspend 📋Firefox8/11/2015 Safari9/30/201550
api.BaseAudioContext.state 📋Firefox8/11/2015 Safari9/30/201550
api.BaseAudioContext.statechange_event 📋Firefox8/11/2015 Safari9/30/201550
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.CharacterData.nextElementSibling 📋Firefox10/29/2013 Safari9/30/2015701
api.CharacterData.previousElementSibling 📋Firefox10/29/2013 Safari9/30/2015701
api.Document.childElementCount 📋Firefox10/29/2013 Safari9/30/2015701
api.Document.children 📋Firefox10/29/2013 Safari9/30/2015701
api.Document.contentType 📋Firefox11/9/2004 Safari9/30/20153977
api.Document.firstElementChild 📋Firefox10/29/2013 Safari9/30/2015701
api.Document.lastElementChild 📋Firefox10/29/2013 Safari9/30/2015701
api.DocumentFragment.childElementCount 📋Firefox10/29/2013 Safari9/30/2015701
api.DocumentFragment.children 📋Firefox10/29/2013 Safari9/30/2015701
api.DocumentFragment.firstElementChild 📋Firefox10/29/2013 Safari9/30/2015701
api.DocumentFragment.getElementById 📋Firefox3/18/2014 Safari9/30/2015561
api.DocumentFragment.lastElementChild 📋Firefox10/29/2013 Safari9/30/2015701
api.HTMLAnchorElement.relList 📋Firefox6/10/2014 Safari9/30/2015477
api.HTMLAreaElement.rel 📋Firefox6/10/2014 Safari9/30/2015477
api.HTMLAreaElement.relList 📋Firefox6/10/2014 Safari9/30/2015477
api.HTMLLinkElement.relList 📋Firefox6/10/2014 Safari9/30/2015477
api.HTMLSelectElement.add.index_before_parameter Firefox11/8/2011 Safari9/30/20151422
api.MouseEvent.movementX 📋Firefox9/22/2015 Safari9/30/20158
api.MouseEvent.movementY 📋Firefox9/22/2015 Safari9/30/20158
api.OfflineAudioContext.resume 📋Firefox8/11/2015 Safari9/30/201550
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.addPath 📋Firefox12/1/2014 Safari9/30/2015303
api.WEBGL_draw_buffers 📋Firefox3/18/2014 Safari9/30/2015561
api.WEBGL_draw_buffers.drawBuffersWEBGL 📋Firefox3/18/2014 Safari9/30/2015561
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

2015/7

API First Browser Date Last Browser Date Days Notes
api.MouseEvent.offsetX 📋Safari6/23/2003 Firefox7/2/20154392
api.MouseEvent.offsetY 📋Safari6/23/2003 Firefox7/2/20154392
api.console.clear_static 📋Safari10/22/2013 Firefox7/2/2015618
api.console.dirxml_static 📋Safari6/8/2009 Firefox7/2/20152215
Node.js: Does not use Logger to log data.

2015/5

API First Browser Date Last Browser Date Days Notes
api.HTMLImageElement.srcset 📋Safari10/16/2014 Firefox5/12/2015208

2015/3

API First Browser Date Last Browser Date Days Notes
api.WebSocket.worker_support Safari6/7/2010 Firefox3/31/20151758

2015/1

API First Browser Date Last Browser Date Days Notes
api.Element.closest 📋Safari7/25/2012 Firefox1/13/2015902
api.SVGFEFloodElement.height 📋Safari7/25/2012 Firefox1/13/2015902
api.SVGFEFloodElement.result 📋Safari7/25/2012 Firefox1/13/2015902
api.SVGFEFloodElement.width 📋Safari7/25/2012 Firefox1/13/2015902
api.SVGFEFloodElement.x 📋Safari7/25/2012 Firefox1/13/2015902
api.SVGFEFloodElement.y 📋Safari7/25/2012 Firefox1/13/2015902

2014/12

API First Browser Date Last Browser Date Days Notes
api.CryptoKey 📋Safari10/22/2013 Firefox12/1/2014405
Node.js: Available as a part of the crypto module.
api.CryptoKey.algorithm 📋Safari10/22/2013 Firefox12/1/2014405
api.CryptoKey.extractable 📋Safari10/22/2013 Firefox12/1/2014405
Deno: The only supported value for this property is true.
api.CryptoKey.type 📋Safari10/22/2013 Firefox12/1/2014405
api.CryptoKey.usages 📋Safari10/22/2013 Firefox12/1/2014405
api.Element.matches 📋Safari10/16/2014 Firefox12/1/201446
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.NamedNodeMap 📋Safari6/23/2003 Firefox12/1/20144179
api.SubtleCrypto.decrypt 📋Safari10/22/2013 Firefox12/1/2014405
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.digest 📋Safari10/22/2013 Firefox12/1/2014405
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 Firefox12/1/2014405
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 Firefox12/1/2014405
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 Firefox12/1/2014405
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 Firefox12/1/2014405
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 Firefox12/1/2014405
Deno: P-384 supported. Not supported: P-256, P-521.
api.SubtleCrypto.importKey.ECDSA 📋Safari10/22/2013 Firefox12/1/2014405
Deno: P-384 supported. Not supported: P-256, P-521.
api.SubtleCrypto.sign 📋Safari10/22/2013 Firefox12/1/2014405
Edge: Not supported: RSA-PSS, ECDSA.Internet Explorer: Returns CryptoOperation instead of PromiseNode.js: Supports: NODE-DSA
api.SubtleCrypto.unwrapKey 📋Safari10/22/2013 Firefox12/1/2014405
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 Firefox12/1/2014405
Deno: Not supported: ECDSA, HMAC.Edge: Not supported: RSA-PSS, ECDSA.Internet Explorer: Returns CryptoOperation instead of PromiseNode.js: Supports: NODE-DSA
api.SubtleCrypto.wrapKey 📋Safari10/22/2013 Firefox12/1/2014405
Edge: Not supported: AES-CTR.Internet Explorer: Returns KeyOperation instead of Promise
api.console.table_static 📋Safari10/22/2013 Firefox12/1/2014405

2014/10

API First Browser Date Last Browser Date Days Notes
api.AudioTrack 📋Firefox10/14/2014 Safari10/16/20142
api.AudioTrack.enabled 📋Firefox10/14/2014 Safari10/16/20142
api.AudioTrack.id 📋Firefox10/14/2014 Safari10/16/20142
api.AudioTrack.kind 📋Firefox10/14/2014 Safari10/16/20142
api.AudioTrack.label 📋Firefox10/14/2014 Safari10/16/20142
api.AudioTrack.language 📋Firefox10/14/2014 Safari10/16/20142
api.BaseAudioContext.createPeriodicWave 📋Firefox10/29/2013 Safari10/16/2014352
api.CanvasRenderingContext2D.drawFocusIfNeeded 📋Firefox9/2/2014 Safari10/16/201444
api.Comment.Comment 📋Firefox9/17/2013 Safari10/16/2014394
api.Document.Document 📋Firefox4/2/2013 Safari10/16/2014562
api.Document.currentScript 📋Firefox3/22/2011 Safari10/16/20141304
api.DocumentFragment.DocumentFragment 📋Firefox9/17/2013 Safari10/16/2014394
api.ErrorEvent.colno 📋Firefox7/22/2014 Safari10/16/201486
api.File.name 📋Firefox1/21/2010 Safari10/16/20141729
api.HTMLCanvasElement.getContext.webgl_context Firefox9/17/2013 Safari10/16/2014394
api.HTMLMediaElement.fastSeek 📋Firefox7/22/2014 Safari10/16/201486
api.HTMLTemplateElement 📋Firefox6/25/2013 Safari10/16/2014478
api.HTMLTemplateElement.content 📋Firefox6/25/2013 Safari10/16/2014478
api.IDBCursor 📋Firefox10/9/2012 Safari10/16/2014737
api.IDBCursor.advance 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBCursor.continue 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBCursor.delete 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBCursor.direction 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBCursor.key 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBCursor.primaryKey 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBCursor.source 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBCursor.update 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBCursorWithValue 📋Firefox10/9/2012 Safari10/16/2014737
api.IDBCursorWithValue.value 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBDatabase 📋Firefox10/9/2012 Safari10/16/2014737
api.IDBDatabase.abort_event 📋Firefox1/31/2012 Safari10/16/2014989
Internet Explorer: Unknown limitations
api.IDBDatabase.close 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBDatabase.createObjectStore 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBDatabase.deleteObjectStore 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBDatabase.name 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBDatabase.objectStoreNames 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBDatabase.transaction 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBDatabase.version 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBDatabase.versionchange_event 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBFactory 📋Firefox10/9/2012 Safari10/16/2014737
api.IDBFactory.cmp 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBFactory.deleteDatabase 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBIndex 📋Firefox10/9/2012 Safari10/16/2014737
api.IDBIndex.count 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBIndex.get 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBIndex.getKey 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBIndex.keyPath 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBIndex.multiEntry 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBIndex.name 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBIndex.objectStore 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBIndex.openCursor 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBIndex.openKeyCursor 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBIndex.unique 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBKeyRange 📋Firefox10/9/2012 Safari10/16/2014737
api.IDBKeyRange.bound_static 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBKeyRange.lower 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBKeyRange.lowerBound_static 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBKeyRange.lowerOpen 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBKeyRange.only_static 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBKeyRange.upper 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBKeyRange.upperBound_static 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBKeyRange.upperOpen 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore 📋Firefox10/9/2012 Safari10/16/2014737
api.IDBObjectStore.add 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.autoIncrement 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.clear 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.count 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.createIndex 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.delete 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.deleteIndex 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.get 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.index 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.indexNames 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.keyPath 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.name 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.openCursor 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.put 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBObjectStore.transaction 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBOpenDBRequest 📋Firefox10/9/2012 Safari10/16/2014737
api.IDBOpenDBRequest.blocked_event 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBOpenDBRequest.upgradeneeded_event 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBRequest 📋Firefox10/9/2012 Safari10/16/2014737
api.IDBRequest.error 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBRequest.error.transient_unrecoverable_read_errors 📋Firefox7/17/2012 Safari10/16/2014821
Chrome: Returns a NotReadableError exception for unrecoverable read errors, and an UnknownError for transient read errors.Chrome: Returns a NotFoundError exception for unrecoverable read errors, and a DataError for transient read errors.Chrome Android: Returns a NotReadableError exception for unrecoverable read errors, and an UnknownError for transient read errors.Chrome Android: Returns a NotFoundError exception for unrecoverable read errors, and a DataError for transient read errors.Opera: Returns a NotReadableError exception for unrecoverable read errors, and an UnknownError for transient read errors.Opera: Returns a NotFoundError exception for unrecoverable read errors, and a DataError for transient read errors.Opera Android: Returns a NotReadableError exception for unrecoverable read errors, and an UnknownError for transient read errors.Opera Android: Returns a NotFoundError exception for unrecoverable read errors, and a DataError for transient read errors.Samsung Internet: Returns a NotReadableError exception for unrecoverable read errors, and an UnknownError for transient read errors.Samsung Internet: Returns a NotFoundError exception for unrecoverable read errors, and a DataError for transient read errors.WebView Android: Returns a NotReadableError exception for unrecoverable read errors, and an UnknownError for transient read errors.WebView Android: Returns a NotFoundError exception for unrecoverable read errors, and a DataError for transient read errors.
api.IDBRequest.error_event 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBRequest.readyState 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBRequest.result 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBRequest.source 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBRequest.success_event 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBRequest.transaction 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBTransaction 📋Firefox10/9/2012 Safari10/16/2014737
api.IDBTransaction.abort 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBTransaction.abort_event 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBTransaction.complete_event 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBTransaction.db 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBTransaction.error 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBTransaction.error_event 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBTransaction.mode 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBTransaction.objectStore 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBVersionChangeEvent 📋Firefox10/9/2012 Safari10/16/2014737
api.IDBVersionChangeEvent.newVersion 📋Firefox1/31/2012 Safari10/16/2014989
api.IDBVersionChangeEvent.oldVersion 📋Firefox1/31/2012 Safari10/16/2014989
api.ImageData.ImageData 📋Firefox4/29/2014 Safari10/16/2014170
api.KeyboardEvent.location 📋Firefox8/28/2012 Safari10/16/2014779
api.OES_element_index_uint 📋Firefox9/17/2013 Safari10/16/2014394
api.OES_standard_derivatives 📋Firefox1/31/2012 Safari10/16/2014989
api.OES_texture_float 📋Firefox8/16/2011 Safari10/16/20141157
api.OES_texture_float_linear 📋Firefox9/17/2013 Safari10/16/2014394
Safari on iOS: Only supported on iPadOS.WebView on iOS: Only supported on iPadOS.
api.OES_texture_half_float 📋Firefox4/29/2014 Safari10/16/2014170
api.OES_texture_half_float_linear 📋Firefox6/10/2014 Safari10/16/2014128
api.OES_vertex_array_object 📋Firefox10/29/2013 Safari10/16/2014352
api.OES_vertex_array_object.bindVertexArrayOES 📋Firefox10/29/2013 Safari10/16/2014352
api.OES_vertex_array_object.createVertexArrayOES 📋Firefox10/29/2013 Safari10/16/2014352
api.OES_vertex_array_object.deleteVertexArrayOES 📋Firefox10/29/2013 Safari10/16/2014352
api.OES_vertex_array_object.isVertexArrayOES 📋Firefox10/29/2013 Safari10/16/2014352
api.OscillatorNode.setPeriodicWave 📋Firefox10/29/2013 Safari10/16/2014352
api.Path2D 📋Firefox7/22/2014 Safari10/16/201486
api.Path2D.Path2D 📋Firefox7/22/2014 Safari10/16/201486
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 Safari10/16/201486
api.Path2D.arcTo 📋Firefox7/22/2014 Safari10/16/201486
api.Path2D.bezierCurveTo 📋Firefox7/22/2014 Safari10/16/201486
api.Path2D.closePath 📋Firefox7/22/2014 Safari10/16/201486
api.Path2D.lineTo 📋Firefox7/22/2014 Safari10/16/201486
api.Path2D.moveTo 📋Firefox7/22/2014 Safari10/16/201486
api.Path2D.quadraticCurveTo 📋Firefox7/22/2014 Safari10/16/201486
api.Path2D.rect 📋Firefox7/22/2014 Safari10/16/201486
api.Performance 📋Firefox9/27/2011 Safari10/16/20141115
Node.js: Only available as an internal instance.
api.Performance.navigation 📋Firefox9/27/2011 Safari10/16/20141115
api.Performance.now 📋Firefox8/28/2012 Safari10/16/2014779
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 Safari10/16/20141115
Node.js: Returns node specific timing object
api.PerformanceNavigation 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceNavigation.redirectCount 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceNavigation.type 📋Firefox9/27/2011 Safari10/16/20141115
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 Safari10/16/20141115
api.PerformanceTiming.connectEnd 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.connectStart 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.domComplete 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.domContentLoadedEventEnd 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.domContentLoadedEventStart 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.domInteractive 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.domLoading 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.domainLookupEnd 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.domainLookupStart 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.fetchStart 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.loadEventEnd 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.loadEventStart 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.navigationStart 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.redirectEnd 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.redirectStart 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.requestStart 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.responseEnd 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.responseStart 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.unloadEventEnd 📋Firefox9/27/2011 Safari10/16/20141115
api.PerformanceTiming.unloadEventStart 📋Firefox9/27/2011 Safari10/16/20141115
api.PeriodicWave 📋Firefox10/29/2013 Safari10/16/2014352
api.Range.Range 📋Firefox9/17/2013 Safari10/16/2014394
api.Text.Text 📋Firefox9/17/2013 Safari10/16/2014394
api.TextTrack.id 📋Firefox7/22/2014 Safari10/16/201486
api.TextTrack.inBandMetadataTrackDispatchType 📋Firefox7/22/2014 Safari10/16/201486
api.TextTrackList.getTrackById 📋Firefox7/22/2014 Safari10/16/201486
api.VTTCue.VTTCue 📋Firefox7/22/2014 Safari10/16/201486
api.WEBGL_compressed_texture_s3tc 📋Firefox6/25/2013 Safari10/16/2014478
api.WEBGL_depth_texture 📋Firefox6/25/2013 Safari10/16/2014478
api.WEBGL_lose_context 📋Firefox6/25/2013 Safari10/16/2014478
api.WEBGL_lose_context.loseContext 📋Firefox6/25/2013 Safari10/16/2014478
api.WEBGL_lose_context.restoreContext 📋Firefox6/25/2013 Safari10/16/2014478
api.WheelEvent.deltaX 📋Firefox11/20/2012 Safari10/16/2014695
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 Safari10/16/2014695
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 Safari10/16/2014695
Internet Explorer: IE9 supports an old draft of the spec where this value was a long instead of a double.
api.Window.beforeunload_event.event_returnvalue_activation Firefox8/16/2011 Safari10/16/20141157
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.WorkerGlobalScope.offline_event 📋Firefox4/29/2014 Safari10/16/2014170
api.WorkerGlobalScope.online_event 📋Firefox4/29/2014 Safari10/16/2014170
api.XMLHttpRequest.responseURL 📋Firefox9/2/2014 Safari10/16/201444
api.indexedDB 📋Firefox10/9/2012 Safari10/16/2014737
api.performance 📋Firefox9/27/2011 Safari10/16/20141115
Node.js: Available as a part of the perf_hooks module.
api.AudioTrackList 📋Safari10/22/2013 Firefox10/14/2014357
api.AudioTrackList.addtrack_event 📋Safari10/22/2013 Firefox10/14/2014357
api.AudioTrackList.change_event 📋Safari10/22/2013 Firefox10/14/2014357
api.AudioTrackList.getTrackById 📋Safari10/22/2013 Firefox10/14/2014357
api.AudioTrackList.length 📋Safari10/22/2013 Firefox10/14/2014357
api.AudioTrackList.removetrack_event 📋Safari10/22/2013 Firefox10/14/2014357
api.HTMLFormControlsCollection.namedItem 📋Safari10/26/2007 Firefox10/14/20142545
Firefox: Returned a NodeList instead of a RadioNodeList.Firefox for Android: Returned a NodeList instead of a RadioNodeList.
api.HTMLMediaElement.audioTracks 📋Safari10/22/2013 Firefox10/14/2014357
api.HTMLMediaElement.videoTracks 📋Safari10/22/2013 Firefox10/14/2014357
api.RadioNodeList 📋Safari10/22/2013 Firefox10/14/2014357
api.RadioNodeList.value 📋Safari10/22/2013 Firefox10/14/2014357
api.VideoTrack 📋Safari10/22/2013 Firefox10/14/2014357
api.VideoTrack.id 📋Safari10/22/2013 Firefox10/14/2014357
api.VideoTrack.kind 📋Safari10/22/2013 Firefox10/14/2014357
api.VideoTrack.label 📋Safari10/22/2013 Firefox10/14/2014357
api.VideoTrack.language 📋Safari10/22/2013 Firefox10/14/2014357
api.VideoTrack.selected 📋Safari10/22/2013 Firefox10/14/2014357
api.VideoTrackList 📋Safari10/22/2013 Firefox10/14/2014357
api.VideoTrackList.addtrack_event 📋Safari10/22/2013 Firefox10/14/2014357
api.VideoTrackList.change_event 📋Safari10/22/2013 Firefox10/14/2014357
api.VideoTrackList.getTrackById 📋Safari10/22/2013 Firefox10/14/2014357
api.VideoTrackList.length 📋Safari10/22/2013 Firefox10/14/2014357
api.VideoTrackList.removetrack_event 📋Safari10/22/2013 Firefox10/14/2014357
api.VideoTrackList.selectedIndex 📋Safari10/22/2013 Firefox10/14/2014357

2014/9

API First Browser Date Last Browser Date Days Notes
api.HTMLAllCollection 📋Safari6/7/2010 Firefox9/2/20141548
api.HTMLAllCollection.item 📋Safari6/7/2010 Firefox9/2/20141548
api.HTMLAllCollection.length 📋Safari6/7/2010 Firefox9/2/20141548
api.HTMLAllCollection.namedItem 📋Safari6/7/2010 Firefox9/2/20141548

2014/7

API First Browser Date Last Browser Date Days Notes
api.CanvasRenderingContext2D.clip.path_parameter Safari10/22/2013 Firefox7/22/2014273
api.CanvasRenderingContext2D.fill.path_parameter Safari10/22/2013 Firefox7/22/2014273
api.CanvasRenderingContext2D.isPointInPath.path_parameter Safari10/22/2013 Firefox7/22/2014273
api.CanvasRenderingContext2D.isPointInStroke.path_parameter Safari10/22/2013 Firefox7/22/2014273
api.CanvasRenderingContext2D.stroke.path_parameter Safari10/22/2013 Firefox7/22/2014273
api.HTMLLinkElement.sizes 📋Safari7/25/2012 Firefox7/22/2014727
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.addTextTrack 📋Safari7/25/2012 Firefox7/22/2014727
api.HTMLMediaElement.textTracks 📋Safari7/25/2012 Firefox7/22/2014727
api.HTMLTrackElement 📋Safari7/25/2012 Firefox7/22/2014727
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 Firefox7/22/2014727
api.HTMLTrackElement.kind 📋Safari7/25/2012 Firefox7/22/2014727
api.HTMLTrackElement.label 📋Safari7/25/2012 Firefox7/22/2014727
api.HTMLTrackElement.readyState 📋Safari7/25/2012 Firefox7/22/2014727
api.HTMLTrackElement.src 📋Safari7/25/2012 Firefox7/22/2014727
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 Firefox7/22/2014727
api.HTMLTrackElement.track 📋Safari7/25/2012 Firefox7/22/2014727
api.KeyboardEvent.KeyboardEvent 📋Safari10/22/2013 Firefox7/22/2014273
api.TextTrack 📋Safari7/25/2012 Firefox7/22/2014727
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 Firefox7/22/2014727
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 Firefox7/22/2014727
api.TextTrack.cuechange_event 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrack.cues 📋Safari7/25/2012 Firefox7/22/2014727
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 Firefox7/22/2014727
api.TextTrack.label 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrack.language 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrack.mode 📋Safari7/25/2012 Firefox7/22/2014727
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 Firefox7/22/2014727
api.TextTrackCue 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackCue.endTime 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackCue.enter_event 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackCue.exit_event 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackCue.id 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackCue.pauseOnExit 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackCue.startTime 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackCue.track 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackCueList 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackCueList.getCueById 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackCueList.length 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackList 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackList.addtrack_event 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackList.change_event 📋Safari10/22/2013 Firefox7/22/2014273
api.TextTrackList.length 📋Safari7/25/2012 Firefox7/22/2014727
api.TextTrackList.removetrack_event 📋Safari10/22/2013 Firefox7/22/2014273
api.VTTCue 📋Safari7/25/2012 Firefox7/22/2014727
api.VTTCue.align 📋Safari7/25/2012 Firefox7/22/2014727
api.VTTCue.getCueAsHTML 📋Safari7/25/2012 Firefox7/22/2014727
api.VTTCue.line 📋Safari7/25/2012 Firefox7/22/2014727
api.VTTCue.position 📋Safari7/25/2012 Firefox7/22/2014727
api.VTTCue.size 📋Safari7/25/2012 Firefox7/22/2014727
api.VTTCue.snapToLines 📋Safari7/25/2012 Firefox7/22/2014727
api.VTTCue.text 📋Safari7/25/2012 Firefox7/22/2014727
api.VTTCue.vertical 📋Safari7/25/2012 Firefox7/22/2014727

2014/6

API First Browser Date Last Browser Date Days Notes
api.SVGFEDropShadowElement 📋Safari7/25/2012 Firefox6/10/2014685
api.SVGFEDropShadowElement.dx 📋Safari7/25/2012 Firefox6/10/2014685
api.SVGFEDropShadowElement.dy 📋Safari7/25/2012 Firefox6/10/2014685
api.SVGFEDropShadowElement.height 📋Safari7/25/2012 Firefox6/10/2014685
api.SVGFEDropShadowElement.in1 📋Safari7/25/2012 Firefox6/10/2014685
api.SVGFEDropShadowElement.result 📋Safari7/25/2012 Firefox6/10/2014685
api.SVGFEDropShadowElement.setStdDeviation 📋Safari7/25/2012 Firefox6/10/2014685
api.SVGFEDropShadowElement.stdDeviationX 📋Safari7/25/2012 Firefox6/10/2014685
api.SVGFEDropShadowElement.stdDeviationY 📋Safari7/25/2012 Firefox6/10/2014685
api.SVGFEDropShadowElement.width 📋Safari7/25/2012 Firefox6/10/2014685
api.SVGFEDropShadowElement.x 📋Safari7/25/2012 Firefox6/10/2014685
api.SVGFEDropShadowElement.y 📋Safari7/25/2012 Firefox6/10/2014685
api.console.count_static 📋Safari6/8/2009 Firefox6/10/20141828

2014/4

API First Browser Date Last Browser Date Days Notes
api.SVGFEComponentTransferElement.height 📋Safari7/25/2012 Firefox4/29/2014643
api.SVGFEComponentTransferElement.result 📋Safari7/25/2012 Firefox4/29/2014643
api.SVGFEComponentTransferElement.width 📋Safari7/25/2012 Firefox4/29/2014643
api.SVGFEComponentTransferElement.x 📋Safari7/25/2012 Firefox4/29/2014643
api.SVGFEComponentTransferElement.y 📋Safari7/25/2012 Firefox4/29/2014643
api.SVGFEGaussianBlurElement.height 📋Safari7/25/2012 Firefox4/29/2014643
api.SVGFEGaussianBlurElement.result 📋Safari7/25/2012 Firefox4/29/2014643
api.SVGFEGaussianBlurElement.width 📋Safari7/25/2012 Firefox4/29/2014643
api.SVGFEGaussianBlurElement.x 📋Safari7/25/2012 Firefox4/29/2014643
api.SVGFEGaussianBlurElement.y 📋Safari7/25/2012 Firefox4/29/2014643
api.ValidityState.badInput 📋Safari10/22/2013 Firefox4/29/2014189
api.console.worker_support Safari10/22/2013 Firefox4/29/2014189

2014/3

API First Browser Date Last Browser Date Days Notes
api.console.assert_static 📋Safari6/8/2009 Firefox3/18/20141744
Node.js: Throws error when assertion fails.

2014/2

API First Browser Date Last Browser Date Days Notes
api.CanvasRenderingContext2D.getLineDash 📋Safari10/22/2013 Firefox2/4/2014105
api.CanvasRenderingContext2D.lineDashOffset 📋Safari10/22/2013 Firefox2/4/2014105
api.CanvasRenderingContext2D.setLineDash 📋Safari10/22/2013 Firefox2/4/2014105
api.ErrorEvent 📋Safari7/25/2012 Firefox2/4/2014559
api.ErrorEvent.ErrorEvent 📋Safari7/25/2012 Firefox2/4/2014559
api.ErrorEvent.filename 📋Safari7/25/2012 Firefox2/4/2014559
api.ErrorEvent.lineno 📋Safari7/25/2012 Firefox2/4/2014559
api.ErrorEvent.message 📋Safari7/25/2012 Firefox2/4/2014559
api.HTMLInputElement.setRangeText 📋Safari10/22/2013 Firefox2/4/2014105
api.HTMLTextAreaElement.setRangeText 📋Safari10/22/2013 Firefox2/4/2014105
api.TrackEvent 📋Safari7/25/2012 Firefox2/4/2014559
api.TrackEvent.TrackEvent 📋Safari7/25/2012 Firefox2/4/2014559
api.TrackEvent.track 📋Safari7/25/2012 Firefox2/4/2014559

2013/12

API First Browser Date Last Browser Date Days Notes
api.DOMTokenList.add.multiple_parameters Safari10/22/2013 Firefox12/10/201349
api.DOMTokenList.remove.multiple_parameters Safari10/22/2013 Firefox12/10/201349
api.HTMLAnchorElement.origin 📋Safari7/20/2011 Firefox12/10/2013874
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.HTMLSelectElement.selectedOptions 📋Safari7/25/2012 Firefox12/10/2013503
api.MessageEvent.MessageEvent 📋Safari7/25/2012 Firefox12/10/2013503
api.Notification.dir 📋Safari10/22/2013 Firefox12/10/201349
api.WaveShaperNode.oversample 📋Safari7/25/2012 Firefox12/10/2013503

2013/10

API First Browser Date Last Browser Date Days Notes
api.AnalyserNode 📋Safari7/25/2012 Firefox10/29/2013461
api.AnalyserNode.fftSize 📋Safari7/25/2012 Firefox10/29/2013461
api.AnalyserNode.frequencyBinCount 📋Safari7/25/2012 Firefox10/29/2013461
api.AnalyserNode.getByteFrequencyData 📋Safari7/25/2012 Firefox10/29/2013461
api.AnalyserNode.getByteTimeDomainData 📋Safari7/25/2012 Firefox10/29/2013461
api.AnalyserNode.getFloatFrequencyData 📋Safari7/25/2012 Firefox10/29/2013461
api.AnalyserNode.maxDecibels 📋Safari7/25/2012 Firefox10/29/2013461
api.AnalyserNode.minDecibels 📋Safari7/25/2012 Firefox10/29/2013461
api.AnalyserNode.smoothingTimeConstant 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioBuffer 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioBuffer.duration 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioBuffer.getChannelData 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioBuffer.length 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioBuffer.numberOfChannels 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioBuffer.sampleRate 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioBufferSourceNode 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioBufferSourceNode.buffer 📋Safari7/25/2012 Firefox10/29/2013461
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 Firefox10/29/2013461
api.AudioBufferSourceNode.loopEnd 📋Safari10/22/2013 Firefox10/29/20137
api.AudioBufferSourceNode.loopStart 📋Safari10/22/2013 Firefox10/29/20137
api.AudioBufferSourceNode.playbackRate 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioBufferSourceNode.start 📋Safari10/22/2013 Firefox10/29/20137
api.AudioContext.createMediaElementSource 📋Safari7/25/2012 Firefox10/29/2013461
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 Firefox10/29/2013461
api.AudioListener 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioListener.setOrientation 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioListener.setPosition 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioNode 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioNode.channelCount 📋Safari10/22/2013 Firefox10/29/20137
api.AudioNode.channelCountMode 📋Safari10/22/2013 Firefox10/29/20137
api.AudioNode.channelInterpretation 📋Safari10/22/2013 Firefox10/29/20137
api.AudioNode.connect 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioNode.context 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioNode.disconnect 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioNode.numberOfInputs 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioNode.numberOfOutputs 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioParam 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioParam.cancelScheduledValues 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioParam.defaultValue 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioParam.exponentialRampToValueAtTime 📋Safari7/25/2012 Firefox10/29/2013461
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 Firefox10/29/2013461
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 Firefox10/29/2013461
api.AudioParam.setValueAtTime 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioParam.setValueCurveAtTime 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioParam.value 📋Safari7/25/2012 Firefox10/29/2013461
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 Firefox10/29/2013461
api.AudioProcessingEvent.inputBuffer 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioProcessingEvent.outputBuffer 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioProcessingEvent.playbackTime 📋Safari7/25/2012 Firefox10/29/2013461
api.AudioScheduledSourceNode.ended_event 📋Safari10/22/2013 Firefox10/29/20137
api.AudioScheduledSourceNode.start 📋Safari10/22/2013 Firefox10/29/20137
api.AudioScheduledSourceNode.stop 📋Safari10/22/2013 Firefox10/29/20137
api.BaseAudioContext.createAnalyser 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.createBiquadFilter 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.createBuffer 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.createBufferSource 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.createChannelMerger 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.createChannelSplitter 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.createConvolver 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.createDelay 📋Safari10/22/2013 Firefox10/29/20137
api.BaseAudioContext.createDynamicsCompressor 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.createGain 📋Safari10/22/2013 Firefox10/29/20137
api.BaseAudioContext.createOscillator 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.createPanner 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.createScriptProcessor 📋Safari10/22/2013 Firefox10/29/20137
api.BaseAudioContext.createWaveShaper 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.currentTime 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.decodeAudioData 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.destination 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.listener 📋Safari7/25/2012 Firefox10/29/2013461
api.BaseAudioContext.sampleRate 📋Safari7/25/2012 Firefox10/29/2013461
api.BiquadFilterNode 📋Safari7/25/2012 Firefox10/29/2013461
api.BiquadFilterNode.Q 📋Safari7/25/2012 Firefox10/29/2013461
api.BiquadFilterNode.detune 📋Safari10/22/2013 Firefox10/29/20137
api.BiquadFilterNode.frequency 📋Safari7/25/2012 Firefox10/29/2013461
api.BiquadFilterNode.gain 📋Safari7/25/2012 Firefox10/29/2013461
api.BiquadFilterNode.getFrequencyResponse 📋Safari7/25/2012 Firefox10/29/2013461
api.BiquadFilterNode.type 📋Safari7/25/2012 Firefox10/29/2013461
api.ChannelMergerNode 📋Safari7/25/2012 Firefox10/29/2013461
api.ChannelSplitterNode 📋Safari7/25/2012 Firefox10/29/2013461
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.ConvolverNode 📋Safari7/25/2012 Firefox10/29/2013461
api.ConvolverNode.buffer 📋Safari7/25/2012 Firefox10/29/2013461
api.ConvolverNode.normalize 📋Safari7/25/2012 Firefox10/29/2013461
api.DelayNode 📋Safari10/22/2013 Firefox10/29/20137
api.DelayNode.delayTime 📋Safari10/22/2013 Firefox10/29/20137
api.DynamicsCompressorNode 📋Safari7/25/2012 Firefox10/29/2013461
api.DynamicsCompressorNode.attack 📋Safari7/25/2012 Firefox10/29/2013461
api.DynamicsCompressorNode.knee 📋Safari7/25/2012 Firefox10/29/2013461
api.DynamicsCompressorNode.ratio 📋Safari7/25/2012 Firefox10/29/2013461
api.DynamicsCompressorNode.reduction 📋Safari7/25/2012 Firefox10/29/2013461
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 Firefox10/29/2013461
api.DynamicsCompressorNode.threshold 📋Safari7/25/2012 Firefox10/29/2013461
api.GainNode 📋Safari10/22/2013 Firefox10/29/20137
api.GainNode.gain 📋Safari10/22/2013 Firefox10/29/20137
api.HTMLIFrameElement.srcdoc 📋Safari7/25/2012 Firefox10/29/2013461
api.HTMLTableElement.createTBody 📋Safari7/25/2012 Firefox10/29/2013461
api.ImageData.worker_support Safari10/22/2013 Firefox10/29/20137
api.MediaElementAudioSourceNode 📋Safari7/25/2012 Firefox10/29/2013461
api.OfflineAudioCompletionEvent 📋Safari7/25/2012 Firefox10/29/2013461
api.OfflineAudioCompletionEvent.renderedBuffer 📋Safari7/25/2012 Firefox10/29/2013461
api.OfflineAudioContext.complete_event 📋Safari10/22/2013 Firefox10/29/20137
api.OfflineAudioContext.startRendering 📋Safari10/22/2013 Firefox10/29/20137
api.OscillatorNode 📋Safari7/25/2012 Firefox10/29/2013461
api.OscillatorNode.detune 📋Safari7/25/2012 Firefox10/29/2013461
api.OscillatorNode.frequency 📋Safari7/25/2012 Firefox10/29/2013461
api.OscillatorNode.type 📋Safari7/25/2012 Firefox10/29/2013461
api.PannerNode 📋Safari7/25/2012 Firefox10/29/2013461
api.PannerNode.coneInnerAngle 📋Safari7/25/2012 Firefox10/29/2013461
api.PannerNode.coneOuterAngle 📋Safari7/25/2012 Firefox10/29/2013461
api.PannerNode.coneOuterGain 📋Safari7/25/2012 Firefox10/29/2013461
api.PannerNode.distanceModel 📋Safari7/25/2012 Firefox10/29/2013461
api.PannerNode.maxDistance 📋Safari7/25/2012 Firefox10/29/2013461
api.PannerNode.panningModel 📋Safari7/25/2012 Firefox10/29/2013461
api.PannerNode.refDistance 📋Safari7/25/2012 Firefox10/29/2013461
api.PannerNode.rolloffFactor 📋Safari7/25/2012 Firefox10/29/2013461
api.PannerNode.setOrientation 📋Safari7/25/2012 Firefox10/29/2013461
api.PannerNode.setPosition 📋Safari7/25/2012 Firefox10/29/2013461
api.Range.collapse.toStart_parameter_optional Safari6/23/2003 Firefox10/29/20133781
Internet Explorer: Optional but defaults to true.
api.SVGSVGElement.deselectAll 📋Safari10/26/2007 Firefox10/29/20132195
api.ScriptProcessorNode Safari10/22/2013 Firefox10/29/20137
api.ScriptProcessorNode.audioprocess_event Safari10/22/2013 Firefox10/29/20137
api.ScriptProcessorNode.bufferSize 📋Safari10/22/2013 Firefox10/29/20137
api.WaveShaperNode 📋Safari7/25/2012 Firefox10/29/2013461
api.WaveShaperNode.curve 📋Safari7/25/2012 Firefox10/29/2013461
api.WebGLVertexArrayObjectOES 📋Safari7/20/2011 Firefox10/29/2013832
api.BeforeUnloadEvent 📋Firefox11/29/2005 Safari10/22/20132884
api.BeforeUnloadEvent.returnValue 📋Firefox11/29/2005 Safari10/22/20132884
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.Blob.slice 📋Firefox6/5/2012 Safari10/22/2013504
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.CanvasRenderingContext2D.isPointInStroke 📋Firefox2/19/2013 Safari10/22/2013245
api.CharacterData.remove 📋Firefox8/6/2013 Safari10/22/201377
api.DOMTokenList.toggle.force_parameter Firefox9/17/2013 Safari10/22/201335
api.Document.activeElement 📋Firefox6/17/2008 Safari10/22/20131953
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.hasFocus 📋Firefox6/17/2008 Safari10/22/20131953
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 Safari10/22/2013287
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.visibilityState 📋Firefox1/8/2013 Safari10/22/2013287
api.DocumentType.remove 📋Firefox8/6/2013 Safari10/22/201377
api.Element.classList 📋Firefox1/21/2010 Safari10/22/20131370
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.mouseenter_event 📋Firefox1/31/2012 Safari10/22/2013630
api.Element.mouseleave_event 📋Firefox1/31/2012 Safari10/22/2013630
api.Element.remove 📋Firefox8/6/2013 Safari10/22/201377
api.Element.wheel_event 📋Firefox11/20/2012 Safari10/22/2013336
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.EventSource.EventSource.options_withCredentials_parameter Firefox3/13/2012 Safari10/22/2013588
api.EventSource.withCredentials 📋Firefox8/16/2011 Safari10/22/2013798
api.FocusEvent 📋Firefox9/17/2013 Safari10/22/201335
api.FocusEvent.FocusEvent 📋Firefox9/17/2013 Safari10/22/201335
api.FocusEvent.relatedTarget 📋Firefox9/17/2013 Safari10/22/201335
api.HTMLFieldSetElement.elements 📋Firefox3/22/2011 Safari10/22/2013945
api.HTMLInputElement.height 📋Firefox10/9/2012 Safari10/22/2013378
api.HTMLInputElement.width 📋Firefox10/9/2012 Safari10/22/2013378
api.HTMLOptGroupElement.disabled 📋Firefox11/9/2004 Safari10/22/20133269
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.MouseEvent.MouseEvent 📋Firefox3/13/2012 Safari10/22/2013588
api.MutationObserver 📋Firefox7/17/2012 Safari10/22/2013462
api.MutationObserver.MutationObserver 📋Firefox7/17/2012 Safari10/22/2013462
api.MutationRecord 📋Firefox7/17/2012 Safari10/22/2013462
api.MutationRecord.addedNodes 📋Firefox7/17/2012 Safari10/22/2013462
api.MutationRecord.attributeName 📋Firefox7/17/2012 Safari10/22/2013462
api.MutationRecord.attributeNamespace 📋Firefox7/17/2012 Safari10/22/2013462
api.MutationRecord.nextSibling 📋Firefox7/17/2012 Safari10/22/2013462
api.MutationRecord.oldValue 📋Firefox7/17/2012 Safari10/22/2013462
api.MutationRecord.previousSibling 📋Firefox7/17/2012 Safari10/22/2013462
api.MutationRecord.removedNodes 📋Firefox7/17/2012 Safari10/22/2013462
api.MutationRecord.target 📋Firefox7/17/2012 Safari10/22/2013462
api.MutationRecord.type 📋Firefox7/17/2012 Safari10/22/2013462
api.Notification 📋Firefox6/25/2013 Safari10/22/2013119
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 Safari10/22/2013119
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 Safari10/22/2013119
api.Notification.close 📋Firefox6/25/2013 Safari10/22/2013119
api.Notification.close_event 📋Firefox6/25/2013 Safari10/22/2013119
api.Notification.error_event 📋Firefox6/25/2013 Safari10/22/2013119
api.Notification.permission_static 📋Firefox6/25/2013 Safari10/22/2013119
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 Safari10/22/2013119
api.SVGGraphicsElement 📋Firefox4/2/2013 Safari10/22/2013203
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.TransitionEvent 📋Firefox3/22/2011 Safari10/22/2013945
api.TransitionEvent.TransitionEvent 📋Firefox8/6/2013 Safari10/22/201377
api.UIEvent.UIEvent 📋Firefox3/13/2012 Safari10/22/2013588
api.URL 📋Firefox2/19/2013 Safari10/22/2013245
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.hash 📋Firefox6/25/2013 Safari10/22/2013119
api.URL.host 📋Firefox6/25/2013 Safari10/22/2013119
api.WheelEvent.WheelEvent 📋Firefox11/20/2012 Safari10/22/2013336
api.WheelEvent.deltaMode 📋Firefox11/20/2012 Safari10/22/2013336
api.Window.cancelAnimationFrame 📋Firefox8/6/2013 Safari10/22/201377
api.Window.requestAnimationFrame 📋Firefox8/6/2013 Safari10/22/201377
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.XMLHttpRequest.responseType.document_value Firefox3/13/2012 Safari10/22/2013588
api.XMLHttpRequest.responseType.json_value Firefox1/31/2012 Safari10/22/2013630
api.XMLHttpRequest.send.body_ArrayBufferView_type Firefox4/2/2013 Safari10/22/2013203
api.XMLHttpRequest.timeout 📋Firefox4/24/2012 Safari10/22/2013546
api.XMLHttpRequest.timeout_event 📋Firefox4/24/2012 Safari10/22/2013546
api.XMLHttpRequestUpload.timeout_event 📋Firefox4/24/2012 Safari10/22/2013546

2013/9

API First Browser Date Last Browser Date Days Notes
api.Element.blur_event 📋Safari3/18/2008 Firefox9/17/20132009
Firefox: The interface for this event is Event, not FocusEvent.Firefox for Android: The interface for this event is Event, not FocusEvent.
api.Element.focus_event 📋Safari3/18/2008 Firefox9/17/20132009
Firefox: The interface for this event is Event, not FocusEvent.Firefox for Android: The interface for this event is Event, not FocusEvent.

2013/8

API First Browser Date Last Browser Date Days Notes
api.TransitionEvent.pseudoElement 📋Safari7/25/2012 Firefox8/6/2013377

2013/6

API First Browser Date Last Browser Date Days Notes
api.Element.copy_event 📋Safari10/26/2007 Firefox6/25/20132069
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 Firefox6/25/20132069
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.paste_event 📋Safari10/26/2007 Firefox6/25/20132069
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.FormData.append.filename_parameter Safari7/25/2012 Firefox6/25/2013335
api.HTMLAnchorElement.toString 📋Safari10/26/2007 Firefox6/25/20132069
api.Location.toString 📋Safari6/23/2003 Firefox6/25/20133655
Internet Explorer: Intranet sites are set to Compatibility View, which will emulate IE7 and omit window.location.toString.
api.SVGAnimatedPreserveAspectRatio.animVal 📋Safari7/25/2012 Firefox6/25/2013335
api.SVGAnimatedPreserveAspectRatio.baseVal 📋Safari7/25/2012 Firefox6/25/2013335
api.SVGFEImageElement.preserveAspectRatio 📋Safari7/25/2012 Firefox6/25/2013335

2013/5

API First Browser Date Last Browser Date Days Notes
api.Crypto 📋Safari6/7/2010 Firefox5/14/20131072
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 Firefox5/14/20131072
Node.js: Since v17.4.0, a similar method is available via the crypto module.
api.Element.scrollHeight 📋Safari6/23/2003 Firefox5/14/20133613
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.Location.origin 📋Safari7/20/2011 Firefox5/14/2013664
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.

2013/4

API First Browser Date Last Browser Date Days Notes
api.CSSGroupingRule.cssRules 📋Safari10/26/2007 Firefox4/2/20131985
api.CSSGroupingRule.deleteRule 📋Safari10/26/2007 Firefox4/2/20131985
api.CSSGroupingRule.insertRule 📋Safari10/26/2007 Firefox4/2/20131985
api.HTMLMediaElement.defaultPlaybackRate 📋Safari3/18/2008 Firefox4/2/20131841
api.HTMLMediaElement.playbackRate 📋Safari3/18/2008 Firefox4/2/20131841
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.HTMLTableRowElement.insertCell.index_parameter_negative_one Safari10/26/2007 Firefox4/2/20131985
api.HTMLTableRowElement.insertCell.index_parameter_optional Safari10/26/2007 Firefox4/2/20131985
api.SVGTextPathElement.method 📋Safari3/18/2008 Firefox4/2/20131841
api.SVGTextPathElement.spacing 📋Safari3/18/2008 Firefox4/2/20131841
api.SVGTextPathElement.startOffset 📋Safari3/18/2008 Firefox4/2/20131841
api.Window.postMessage.transfer_parameter Safari6/7/2010 Firefox4/2/20131030

2013/2

API First Browser Date Last Browser Date Days Notes
api.CSSPageRule 📋Safari10/26/2007 Firefox2/19/20131943
api.CSSPageRule.style 📋Safari10/26/2007 Firefox2/19/20131943
api.Document.URL 📋Safari10/26/2007 Firefox2/19/20131943
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.compatMode 📋Safari7/20/2011 Firefox2/19/2013580
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.URL.createObjectURL_static 📋Safari7/25/2012 Firefox2/19/2013209
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 Firefox2/19/2013209
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.

2013/1

API First Browser Date Last Browser Date Days Notes
api.HTMLOListElement.reversed 📋Safari7/25/2012 Firefox1/8/2013167
api.ProgressEvent.ProgressEvent 📋Safari7/25/2012 Firefox1/8/2013167
api.WebSocket.send 📋Safari6/7/2010 Firefox1/8/2013946
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.Window.devicePixelRatio 📋Safari10/26/2007 Firefox1/8/20131901
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.

2012/11

API First Browser Date Last Browser Date Days Notes
api.Event.initEvent 📋Safari6/23/2003 Firefox11/20/20123438
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.HTMLIFrameElement.sandbox 📋Safari6/7/2010 Firefox11/20/2012897
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.Range.intersectsNode 📋Safari10/26/2007 Firefox11/20/20121852
api.WheelEvent 📋Safari10/26/2007 Firefox11/20/20121852

2012/10

API First Browser Date Last Browser Date Days Notes
api.HTMLInputElement.max 📋Safari6/7/2010 Firefox10/9/2012855
api.HTMLInputElement.min 📋Safari6/7/2010 Firefox10/9/2012855
api.HTMLInputElement.step 📋Safari6/7/2010 Firefox10/9/2012855
api.HTMLInputElement.stepDown 📋Safari6/7/2010 Firefox10/9/2012855
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 Firefox10/9/2012855
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.valueAsNumber 📋Safari6/7/2010 Firefox10/9/2012855
api.HTMLMeterElement 📋Safari7/25/2012 Firefox10/9/201276
api.HTMLMeterElement.high 📋Safari7/25/2012 Firefox10/9/201276
api.HTMLMeterElement.low 📋Safari7/25/2012 Firefox10/9/201276
api.HTMLMeterElement.max 📋Safari7/25/2012 Firefox10/9/201276
api.HTMLMeterElement.min 📋Safari7/25/2012 Firefox10/9/201276
api.HTMLMeterElement.optimum 📋Safari7/25/2012 Firefox10/9/201276
api.HTMLMeterElement.value 📋Safari7/25/2012 Firefox10/9/201276

2012/8

API First Browser Date Last Browser Date Days Notes
api.HTMLMediaElement.played 📋Safari3/18/2008 Firefox8/28/20121624
api.HTMLSourceElement.media 📋Safari3/18/2008 Firefox8/28/20121624
api.SVGAnimatedRect.animVal 📋Safari10/26/2007 Firefox8/28/20121768
api.SVGAnimatedRect.baseVal 📋Safari10/26/2007 Firefox8/28/20121768
api.SVGViewElement 📋Safari10/26/2007 Firefox8/28/20121768
api.SVGViewElement.preserveAspectRatio 📋Safari10/26/2007 Firefox8/28/20121768
api.SVGViewElement.viewBox 📋Safari10/26/2007 Firefox8/28/20121768

2012/7

API First Browser Date Last Browser Date Days Notes
api.Blob 📋Firefox3/22/2011 Safari7/25/2012491
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 Safari7/25/201250
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 Safari7/25/2012491
api.Blob.type 📋Firefox3/22/2011 Safari7/25/2012491
api.CSSStyleDeclaration.item 📋Firefox11/9/2004 Safari7/25/20122815
api.CSSStyleDeclaration.length 📋Firefox11/9/2004 Safari7/25/20122815
api.CSSStyleDeclaration.setProperty 📋Firefox11/9/2004 Safari7/25/20122815
api.CloseEvent 📋Firefox11/8/2011 Safari7/25/2012260
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.CloseEvent 📋Firefox3/13/2012 Safari7/25/2012134
api.CloseEvent.code 📋Firefox11/8/2011 Safari7/25/2012260
api.CloseEvent.reason 📋Firefox11/8/2011 Safari7/25/2012260
api.CloseEvent.wasClean 📋Firefox11/8/2011 Safari7/25/2012260
api.CustomEvent.CustomEvent 📋Firefox3/13/2012 Safari7/25/2012134
api.Event.Event 📋Firefox3/13/2012 Safari7/25/2012134
api.EventSource.url 📋Firefox8/16/2011 Safari7/25/2012344
api.FileReader 📋Firefox1/21/2010 Safari7/25/2012916
Firefox: Before Firefox 4, Blob parameters were File parameters.
api.FileReader.FileReader 📋Firefox1/21/2010 Safari7/25/2012916
api.FileReader.abort 📋Firefox1/21/2010 Safari7/25/2012916
api.FileReader.abort_event 📋Firefox1/21/2010 Safari7/25/2012916
api.FileReader.error 📋Firefox1/21/2010 Safari7/25/2012916
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 Safari7/25/2012916
api.FileReader.load_event 📋Firefox1/21/2010 Safari7/25/2012916
api.FileReader.loadend_event 📋Firefox1/21/2010 Safari7/25/2012916
api.FileReader.progress_event 📋Firefox1/21/2010 Safari7/25/2012916
api.FileReader.readAsArrayBuffer 📋Firefox1/21/2010 Safari7/25/2012916
api.FileReader.readAsBinaryString 📋Firefox1/21/2010 Safari7/25/2012916
api.FileReader.readAsDataURL 📋Firefox1/21/2010 Safari7/25/2012916
Firefox for Android: Using the camera in Android 8.x raises an exception. See bug 1511083.
api.FileReader.readAsText 📋Firefox1/21/2010 Safari7/25/2012916
api.FileReader.readyState 📋Firefox1/21/2010 Safari7/25/2012916
api.FileReader.result 📋Firefox1/21/2010 Safari7/25/2012916
api.FileReaderSync 📋Firefox11/8/2011 Safari7/25/2012260
api.FileReaderSync.FileReaderSync 📋Firefox11/8/2011 Safari7/25/2012260
api.FileReaderSync.readAsArrayBuffer 📋Firefox11/8/2011 Safari7/25/2012260
api.FileReaderSync.readAsBinaryString 📋Firefox11/8/2011 Safari7/25/2012260
api.FileReaderSync.readAsDataURL 📋Firefox11/8/2011 Safari7/25/2012260
api.FileReaderSync.readAsText 📋Firefox11/8/2011 Safari7/25/2012260
api.FileReaderSync.worker_support Firefox11/8/2011 Safari7/25/2012260
api.HTMLElement.accessKey 📋Firefox6/21/2011 Safari7/25/2012400
api.HTMLElement.click 📋Firefox6/17/2008 Safari7/25/20121499
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.HTMLFieldSetElement.disabled 📋Firefox3/22/2011 Safari7/25/2012491
api.HTMLFieldSetElement.name 📋Firefox3/22/2011 Safari7/25/2012491
api.HTMLFieldSetElement.type 📋Firefox3/22/2011 Safari7/25/2012491
api.HTMLFormElement.autocomplete 📋Firefox3/22/2011 Safari7/25/2012491
api.HTMLImageElement.crossOrigin 📋Firefox11/8/2011 Safari7/25/2012260
api.HTMLInputElement.autocomplete 📋Firefox3/22/2011 Safari7/25/2012491
api.HTMLInputElement.selectionDirection 📋Firefox11/8/2011 Safari7/25/2012260
api.HTMLMediaElement.defaultMuted 📋Firefox3/13/2012 Safari7/25/2012134
api.HTMLProgressElement 📋Firefox8/16/2011 Safari7/25/2012344
api.HTMLProgressElement.max 📋Firefox8/16/2011 Safari7/25/2012344
api.HTMLProgressElement.position 📋Firefox8/16/2011 Safari7/25/2012344
api.HTMLProgressElement.value 📋Firefox8/16/2011 Safari7/25/2012344
api.HTMLScriptElement.crossOrigin 📋Firefox7/17/2012 Safari7/25/20128
api.HTMLSpanElement 📋Firefox11/9/2004 Safari7/25/20122815
api.HTMLTextAreaElement.selectionDirection 📋Firefox11/8/2011 Safari7/25/2012260
api.HTMLTextAreaElement.wrap 📋Firefox3/22/2011 Safari7/25/2012491
api.HTMLUnknownElement 📋Firefox11/9/2004 Safari7/25/20122815
api.HashChangeEvent.HashChangeEvent 📋Firefox3/13/2012 Safari7/25/2012134
api.History.state 📋Firefox3/22/2011 Safari7/25/2012491
api.MutationObserver.disconnect 📋Firefox7/17/2012 Safari7/25/20128
api.MutationObserver.observe 📋Firefox7/17/2012 Safari7/25/20128
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 Safari7/25/20128
api.PageTransitionEvent.PageTransitionEvent 📋Firefox3/13/2012 Safari7/25/2012134
api.PopStateEvent 📋Firefox3/22/2011 Safari7/25/2012491
api.PopStateEvent.PopStateEvent 📋Firefox3/13/2012 Safari7/25/2012134
api.PopStateEvent.state 📋Firefox3/22/2011 Safari7/25/2012491
api.SVGAnimateMotionElement 📋Firefox3/22/2011 Safari7/25/2012491
api.SVGAnimatedBoolean.animVal 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGAnimatedBoolean.baseVal 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGAnimatedInteger.animVal 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGAnimatedInteger.baseVal 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGAnimatedNumberList.animVal 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGAnimatedNumberList.baseVal 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGComponentTransferFunctionElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGComponentTransferFunctionElement.amplitude 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGComponentTransferFunctionElement.exponent 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGComponentTransferFunctionElement.intercept 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGComponentTransferFunctionElement.offset 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGComponentTransferFunctionElement.slope 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGComponentTransferFunctionElement.tableValues 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGComponentTransferFunctionElement.type 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGElement.error_event 📋Firefox11/29/2005 Safari7/25/20122430
api.SVGFEBlendElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEBlendElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEBlendElement.in1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEBlendElement.in2 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEBlendElement.mode 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEBlendElement.result 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEBlendElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEBlendElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEBlendElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEColorMatrixElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEColorMatrixElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEColorMatrixElement.in1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEColorMatrixElement.result 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEColorMatrixElement.type 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEColorMatrixElement.values 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEColorMatrixElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEColorMatrixElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEColorMatrixElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEComponentTransferElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEComponentTransferElement.in1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFECompositeElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFECompositeElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFECompositeElement.in1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFECompositeElement.in2 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFECompositeElement.k1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFECompositeElement.k2 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFECompositeElement.k3 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFECompositeElement.k4 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFECompositeElement.operator 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFECompositeElement.result 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFECompositeElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFECompositeElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFECompositeElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.bias 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.divisor 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.edgeMode 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.in1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.kernelMatrix 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.kernelUnitLengthX 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.kernelUnitLengthY 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.orderX 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.orderY 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.preserveAlpha 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.result 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.targetX 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.targetY 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEConvolveMatrixElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDiffuseLightingElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDiffuseLightingElement.diffuseConstant 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDiffuseLightingElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDiffuseLightingElement.in1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDiffuseLightingElement.kernelUnitLengthX 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDiffuseLightingElement.kernelUnitLengthY 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDiffuseLightingElement.result 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDiffuseLightingElement.surfaceScale 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDiffuseLightingElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDiffuseLightingElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDiffuseLightingElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDisplacementMapElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDisplacementMapElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDisplacementMapElement.in1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDisplacementMapElement.in2 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDisplacementMapElement.result 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDisplacementMapElement.scale 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDisplacementMapElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDisplacementMapElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDisplacementMapElement.xChannelSelector 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDisplacementMapElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDisplacementMapElement.yChannelSelector 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDistantLightElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDistantLightElement.azimuth 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEDistantLightElement.elevation 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEFloodElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEFuncAElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEFuncBElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEFuncGElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEFuncRElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEGaussianBlurElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEGaussianBlurElement.in1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEGaussianBlurElement.setStdDeviation 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEGaussianBlurElement.stdDeviationX 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEGaussianBlurElement.stdDeviationY 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEImageElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEImageElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEImageElement.href 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEImageElement.result 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEImageElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEImageElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEImageElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMergeElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMergeElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMergeElement.result 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMergeElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMergeElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMergeElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMergeNodeElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMergeNodeElement.in1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMorphologyElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMorphologyElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMorphologyElement.in1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMorphologyElement.operator 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMorphologyElement.radiusX 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMorphologyElement.radiusY 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMorphologyElement.result 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMorphologyElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMorphologyElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEMorphologyElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEOffsetElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEOffsetElement.dx 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEOffsetElement.dy 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEOffsetElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEOffsetElement.in1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEOffsetElement.result 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEOffsetElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEOffsetElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEOffsetElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEPointLightElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEPointLightElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEPointLightElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFEPointLightElement.z 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpecularLightingElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpecularLightingElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpecularLightingElement.in1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpecularLightingElement.result 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpecularLightingElement.specularConstant 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpecularLightingElement.specularExponent 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpecularLightingElement.surfaceScale 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpecularLightingElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpecularLightingElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpecularLightingElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpotLightElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpotLightElement.limitingConeAngle 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpotLightElement.pointsAtX 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpotLightElement.pointsAtY 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpotLightElement.pointsAtZ 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpotLightElement.specularExponent 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpotLightElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpotLightElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFESpotLightElement.z 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETileElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETileElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETileElement.in1 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETileElement.result 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETileElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETileElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETileElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETurbulenceElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETurbulenceElement.baseFrequencyX 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETurbulenceElement.baseFrequencyY 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETurbulenceElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETurbulenceElement.numOctaves 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETurbulenceElement.result 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETurbulenceElement.seed 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETurbulenceElement.stitchTiles 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETurbulenceElement.type 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETurbulenceElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETurbulenceElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFETurbulenceElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFilterElement 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFilterElement.filterUnits 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFilterElement.height 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFilterElement.href 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFilterElement.primitiveUnits 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFilterElement.width 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFilterElement.x 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGFilterElement.y 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGMPathElement 📋Firefox3/22/2011 Safari7/25/2012491
api.SVGMPathElement.href 📋Firefox3/22/2011 Safari7/25/2012491
api.SVGNumberList.appendItem 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGNumberList.clear 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGNumberList.getItem 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGNumberList.initialize 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGNumberList.insertItemBefore 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGNumberList.numberOfItems 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGNumberList.removeItem 📋Firefox6/17/2008 Safari7/25/20121499
api.SVGNumberList.replaceItem 📋Firefox6/17/2008 Safari7/25/20121499
api.StorageEvent.StorageEvent Firefox6/5/2012 Safari7/25/201250
api.TransitionEvent.elapsedTime 📋Firefox3/22/2011 Safari7/25/2012491
api.TransitionEvent.propertyName 📋Firefox3/22/2011 Safari7/25/2012491
api.WebSocket.binaryType 📋Firefox3/13/2012 Safari7/25/2012134
api.WebSocket.extensions 📋Firefox11/8/2011 Safari7/25/2012260
api.WebSocket.protocol 📋Firefox9/27/2011 Safari7/25/2012302
api.WebSocket.protocol_rfc_6455 Firefox3/13/2012 Safari7/25/2012134
api.WebSocket.url 📋Firefox9/27/2011 Safari7/25/2012302
api.XMLHttpRequest.send.body_ArrayBuffer_type Firefox12/20/2011 Safari7/25/2012218
api.XMLHttpRequest.send.body_Blob_type Firefox10/24/2006 Safari7/25/20122101
api.XMLHttpRequest.send.body_FormData_type Firefox10/24/2006 Safari7/25/20122101
api.HTMLImageElement.x 📋Safari10/26/2007 Firefox7/17/20121726
api.HTMLImageElement.y 📋Safari10/26/2007 Firefox7/17/20121726

2012/6

API First Browser Date Last Browser Date Days Notes
api.StorageEvent 📋Safari6/8/2009 Firefox6/5/20121093
api.StorageEvent.initStorageEvent 📋Safari6/8/2009 Firefox6/5/20121093
api.StorageEvent.key 📋Safari6/8/2009 Firefox6/5/20121093
api.StorageEvent.newValue 📋Safari6/8/2009 Firefox6/5/20121093
api.StorageEvent.oldValue 📋Safari6/8/2009 Firefox6/5/20121093
api.StorageEvent.storageArea 📋Safari6/8/2009 Firefox6/5/20121093
api.StorageEvent.url 📋Safari6/7/2010 Firefox6/5/2012729

2012/4

API First Browser Date Last Browser Date Days Notes
api.Document.createTreeWalker.whatToShow_filter_parameters_optional Safari10/26/2007 Firefox4/24/20121642
api.SVGAnimationElement.requiredExtensions 📋Safari10/26/2007 Firefox4/24/20121642
api.SVGAnimationElement.systemLanguage 📋Safari10/26/2007 Firefox4/24/20121642
api.SVGGraphicsElement.requiredExtensions 📋Safari10/26/2007 Firefox4/24/20121642
api.SVGGraphicsElement.systemLanguage 📋Safari10/26/2007 Firefox4/24/20121642
api.SVGStringList 📋Safari10/26/2007 Firefox4/24/20121642
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 Firefox4/24/20121642
api.SVGStringList.clear 📋Safari10/26/2007 Firefox4/24/20121642
api.SVGStringList.getItem 📋Safari10/26/2007 Firefox4/24/20121642
api.SVGStringList.initialize 📋Safari10/26/2007 Firefox4/24/20121642
api.SVGStringList.insertItemBefore 📋Safari10/26/2007 Firefox4/24/20121642
api.SVGStringList.numberOfItems 📋Safari10/26/2007 Firefox4/24/20121642
api.SVGStringList.removeItem 📋Safari10/26/2007 Firefox4/24/20121642
api.SVGStringList.replaceItem 📋Safari10/26/2007 Firefox4/24/20121642

2012/3

API First Browser Date Last Browser Date Days Notes
api.Element.outerHTML 📋Safari4/15/2005 Firefox3/13/20122524
api.HTMLMediaElement.loop 📋Safari6/8/2009 Firefox3/13/20121009
api.PageTransitionEvent.persisted 📋Safari6/7/2010 Firefox3/13/2012645
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.WebSocket 📋Safari6/7/2010 Firefox3/13/2012645
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 Firefox3/13/2012645

2012/1

API First Browser Date Last Browser Date Days Notes
api.DOMParser.parseFromString.svg Safari10/26/2007 Firefox1/31/20121558
api.Event.stopImmediatePropagation 📋Safari6/7/2010 Firefox1/31/2012603
api.console.timeEnd_static 📋Safari6/8/2009 Firefox1/31/2012967
api.console.time_static 📋Safari6/8/2009 Firefox1/31/2012967

2011/12

API First Browser Date Last Browser Date Days Notes
api.CompositionEvent 📋Safari6/7/2010 Firefox12/20/2011561
api.CompositionEvent.data 📋Safari6/7/2010 Firefox12/20/2011561
api.CompositionEvent.initCompositionEvent 📋Safari6/7/2010 Firefox12/20/2011561
api.Element.compositionend_event 📋Safari6/7/2010 Firefox12/20/2011561
api.Element.compositionstart_event 📋Safari6/7/2010 Firefox12/20/2011561
api.Element.compositionupdate_event 📋Safari6/7/2010 Firefox12/20/2011561
api.HTMLElement.drag_event 📋Safari3/18/2008 Firefox12/20/20111372
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 Firefox12/20/20111372
api.HTMLElement.dragenter_event 📋Safari3/18/2008 Firefox12/20/20111372
api.HTMLElement.dragleave_event 📋Safari3/18/2008 Firefox12/20/20111372
api.HTMLElement.dragover_event 📋Safari3/18/2008 Firefox12/20/20111372
api.HTMLElement.dragstart_event 📋Safari3/18/2008 Firefox12/20/20111372
api.HTMLElement.drop_event 📋Safari3/18/2008 Firefox12/20/20111372
api.HTMLMediaElement.abort_event 📋Safari3/18/2008 Firefox12/20/20111372
api.Node.contains 📋Safari10/24/2003 Firefox12/20/20112979
Internet Explorer: Only supported for HTMLElement, not all Node objects.
api.Node.ownerDocument 📋Safari6/23/2003 Firefox12/20/20113102
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 Firefox12/20/20112979
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.Window.message_event 📋Safari6/8/2009 Firefox12/20/2011925
api.Window.offline_event 📋Safari6/8/2009 Firefox12/20/2011925
api.Window.online_event 📋Safari6/8/2009 Firefox12/20/2011925
api.console.groupCollapsed_static 📋Safari7/20/2011 Firefox12/20/2011153
Node.js: Alias for console.group
api.console.groupEnd_static 📋Safari6/8/2009 Firefox12/20/2011925
api.console.group_static 📋Safari6/8/2009 Firefox12/20/2011925
api.console.substitution_strings Safari10/26/2007 Firefox12/20/20111516
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.

2011/11

API First Browser Date Last Browser Date Days Notes
api.Element.insertAdjacentHTML 📋Safari6/8/2009 Firefox11/8/2011883
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.HTMLMediaElement.seekable 📋Safari3/18/2008 Firefox11/8/20111330
api.console.dir_static 📋Safari6/8/2009 Firefox11/8/2011883

2011/9

API First Browser Date Last Browser Date Days Notes
api.File 📋Safari6/8/2009 Firefox9/27/2011841
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.HTMLOptionElement.label 📋Safari10/26/2007 Firefox9/27/20111432
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.WebSocket.bufferedAmount 📋Safari6/7/2010 Firefox9/27/2011477
api.WebSocket.close 📋Safari6/7/2010 Firefox9/27/2011477
api.WebSocket.close_event 📋Safari6/7/2010 Firefox9/27/2011477
api.WebSocket.error_event 📋Safari6/7/2010 Firefox9/27/2011477
api.WebSocket.message_event 📋Safari6/7/2010 Firefox9/27/2011477
api.WebSocket.open_event 📋Safari6/7/2010 Firefox9/27/2011477
api.WebSocket.readyState 📋Safari6/7/2010 Firefox9/27/2011477

2011/8

API First Browser Date Last Browser Date Days Notes
api.CustomEvent 📋Safari6/7/2010 Firefox8/16/2011435
api.CustomEvent.detail 📋Safari6/7/2010 Firefox8/16/2011435
api.CustomEvent.initCustomEvent 📋Safari6/7/2010 Firefox8/16/2011435
api.DOMStringMap 📋Safari7/20/2011 Firefox8/16/201127
api.Document.scroll_event 📋Safari4/29/2005 Firefox8/16/20112300
api.Element.click_event 📋Safari10/26/2007 Firefox8/16/20111390
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.contextmenu_event 📋Safari10/26/2007 Firefox8/16/20111390
api.Element.dblclick_event 📋Safari10/26/2007 Firefox8/16/20111390
Firefox: Starting in Firefox 68, dblclick events are only sent for the primary mouse button, per the specification.
api.Element.input_event 📋Safari3/18/2008 Firefox8/16/20111246
Edge: Not supported on select, checkbox, or radio inputs.Internet Explorer: Only supports input of type text and password.
api.Element.keydown_event 📋Safari2/2/2004 Firefox8/16/20112752
api.Element.keypress_event 📋Safari4/15/2005 Firefox8/16/20112314
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 Firefox8/16/20112752
api.Element.mousedown_event 📋Safari6/8/2009 Firefox8/16/2011799
api.Element.mousemove_event 📋Safari6/8/2009 Firefox8/16/2011799
api.Element.mouseout_event 📋Safari6/23/2003 Firefox8/16/20112976
api.Element.mouseover_event 📋Safari6/8/2009 Firefox8/16/2011799
api.Element.mouseup_event 📋Safari6/8/2009 Firefox8/16/2011799
api.Element.scroll_event 📋Safari4/15/2005 Firefox8/16/20112314
api.Event.defaultPrevented 📋Safari6/7/2010 Firefox8/16/2011435
api.EventSource 📋Safari6/7/2010 Firefox8/16/2011435
api.EventSource.EventSource 📋Safari6/7/2010 Firefox8/16/2011435
api.EventSource.close 📋Safari6/7/2010 Firefox8/16/2011435
api.EventSource.error_event 📋Safari6/7/2010 Firefox8/16/2011435
api.EventSource.message_event 📋Safari6/7/2010 Firefox8/16/2011435
api.EventSource.open_event 📋Safari6/7/2010 Firefox8/16/2011435
api.EventSource.readyState 📋Safari6/7/2010 Firefox8/16/2011435
api.EventTarget.addEventListener.useCapture_parameter_optional Safari6/23/2003 Firefox8/16/20112976
api.EventTarget.removeEventListener.useCapture_parameter_optional Safari6/23/2003 Firefox8/16/20112976
api.HTMLElement.dataset 📋Safari7/20/2011 Firefox8/16/201127
api.HTMLFormElement.reset_event 📋Safari10/26/2007 Firefox8/16/20111390
api.HTMLInputElement.select_event 📋Safari6/23/2003 Firefox8/16/20112976
api.HTMLMediaElement.error_event 📋Safari3/18/2008 Firefox8/16/20111246
api.HTMLMediaElement.loadstart_event 📋Safari6/8/2009 Firefox8/16/2011799
api.HTMLMediaElement.progress_event 📋Safari3/18/2008 Firefox8/16/20111246
api.HTMLMediaElement.volumechange_event 📋Safari3/18/2008 Firefox8/16/20111246
api.HTMLMediaElement.waiting_event 📋Safari3/18/2008 Firefox8/16/20111246
api.HTMLTextAreaElement.select_event 📋Safari6/23/2003 Firefox8/16/20112976
api.HashChangeEvent.newURL 📋Safari7/20/2011 Firefox8/16/201127
api.HashChangeEvent.oldURL 📋Safari7/20/2011 Firefox8/16/201127
api.MediaQueryList 📋Safari7/20/2011 Firefox8/16/201127
api.MediaQueryList.addListener 📋Safari7/20/2011 Firefox8/16/201127
api.MediaQueryList.matches 📋Safari7/20/2011 Firefox8/16/201127
api.MediaQueryList.media 📋Safari7/20/2011 Firefox8/16/201127
api.MediaQueryList.removeListener 📋Safari7/20/2011 Firefox8/16/201127
api.Window.blur_event 📋Safari7/20/2011 Firefox8/16/201127
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.error_event 📋Safari7/20/2011 Firefox8/16/201127
api.Window.focus_event 📋Safari7/20/2011 Firefox8/16/201127
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.matchMedia 📋Safari7/20/2011 Firefox8/16/201127
api.Window.pagehide_event 📋Safari6/7/2010 Firefox8/16/2011435
api.Window.pageshow_event 📋Safari6/7/2010 Firefox8/16/2011435
api.XMLHttpRequest.response 📋Safari7/20/2011 Firefox8/16/201127
api.XMLHttpRequest.responseType 📋Safari7/20/2011 Firefox8/16/201127
api.XMLHttpRequest.responseType.arraybuffer_value Safari7/20/2011 Firefox8/16/201127
api.XMLHttpRequest.responseType.blob_value Safari7/20/2011 Firefox8/16/201127
api.console.trace_static 📋Safari6/8/2009 Firefox8/16/2011799

2011/7

API First Browser Date Last Browser Date Days Notes
api.DOMStringList 📋Firefox11/9/2004 Safari7/20/20112444
api.DOMStringList.contains 📋Firefox11/29/2005 Safari7/20/20112059
api.DOMStringList.item 📋Firefox11/9/2004 Safari7/20/20112444
api.DOMStringList.length 📋Firefox11/9/2004 Safari7/20/20112444
api.DOMTokenList 📋Firefox1/21/2010 Safari7/20/2011545
api.DOMTokenList.add 📋Firefox1/21/2010 Safari7/20/2011545
api.DOMTokenList.contains 📋Firefox1/21/2010 Safari7/20/2011545
api.DOMTokenList.item 📋Firefox1/21/2010 Safari7/20/2011545
api.DOMTokenList.length 📋Firefox1/21/2010 Safari7/20/2011545
api.DOMTokenList.remove 📋Firefox1/21/2010 Safari7/20/2011545
api.DOMTokenList.toString 📋Firefox1/21/2010 Safari7/20/2011545
api.DOMTokenList.toggle 📋Firefox1/21/2010 Safari7/20/2011545
api.Document.readystatechange_event 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLAnchorElement.ping 📋Firefox11/9/2004 Safari7/20/20112444
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.ping 📋Firefox11/9/2004 Safari7/20/20112444
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.formAction 📋Firefox3/22/2011 Safari7/20/2011120
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 Safari7/20/2011120
api.HTMLButtonElement.formMethod 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLButtonElement.formTarget 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLCanvasElement.webglcontextlost_event 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLCanvasElement.webglcontextrestored_event 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLElement.hidden 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLElement.spellcheck 📋Firefox10/24/2006 Safari7/20/20111730
api.HTMLLabelElement.control 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLObjectElement.checkValidity 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLObjectElement.setCustomValidity 📋Firefox3/22/2011 Safari7/20/2011120
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.validationMessage 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLObjectElement.validity 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLOutputElement 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLOutputElement.checkValidity 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLOutputElement.defaultValue 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLOutputElement.form 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLOutputElement.htmlFor 📋Firefox3/22/2011 Safari7/20/2011120
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 Safari7/20/2011120
api.HTMLOutputElement.setCustomValidity 📋Firefox3/22/2011 Safari7/20/2011120
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 Safari7/20/2011120
api.HTMLOutputElement.validationMessage 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLOutputElement.validity 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLOutputElement.value 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLOutputElement.willValidate 📋Firefox3/22/2011 Safari7/20/2011120
api.HTMLScriptElement.async 📋Firefox1/21/2010 Safari7/20/2011545
api.HTMLSelectElement.required 📋Firefox3/22/2011 Safari7/20/2011120
api.SVGSVGElement.getElementById 📋Firefox11/29/2005 Safari7/20/20112059
api.WebGLActiveInfo 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLActiveInfo.name 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLActiveInfo.size 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLActiveInfo.type 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLBuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLFramebuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLProgram 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderbuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext 📋Firefox3/22/2011 Safari7/20/2011120
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 Safari7/20/2011120
api.WebGLRenderingContext.attachShader 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.bindAttribLocation 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.bindBuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.bindFramebuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.bindRenderbuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.bindTexture 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.blendColor 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.blendEquation 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.blendEquationSeparate 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.blendFunc 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.blendFuncSeparate 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.bufferData 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.bufferSubData 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.canvas 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.checkFramebufferStatus 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.clear 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.clearColor 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.clearDepth 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.clearStencil 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.colorMask 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.compileShader 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.compressedTexImage2D 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.compressedTexSubImage2D 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.copyTexImage2D 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.copyTexSubImage2D 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.createBuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.createFramebuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.createProgram 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.createRenderbuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.createShader 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.createTexture 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.cullFace 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.deleteBuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.deleteFramebuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.deleteProgram 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.deleteRenderbuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.deleteShader 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.deleteTexture 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.depthFunc 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.depthMask 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.depthRange 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.detachShader 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.disable 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.disableVertexAttribArray 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.drawArrays 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.drawElements 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.drawingBufferHeight 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.drawingBufferWidth 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.enable 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.enableVertexAttribArray 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.finish 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.flush 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.framebufferRenderbuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.framebufferTexture2D 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.frontFace 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.generateMipmap 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getActiveAttrib 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getActiveUniform 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getAttachedShaders 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getAttribLocation 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getBufferParameter 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getContextAttributes 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getError 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getExtension 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getFramebufferAttachmentParameter 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getParameter 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getProgramInfoLog 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getProgramParameter 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getRenderbufferParameter 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getShaderInfoLog 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getShaderParameter 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getShaderPrecisionFormat 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getShaderSource 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getSupportedExtensions 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getTexParameter 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getUniform 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getUniformLocation 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getVertexAttrib 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.getVertexAttribOffset 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.hint 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.isBuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.isContextLost 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.isEnabled 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.isFramebuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.isProgram 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.isRenderbuffer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.isShader 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.isTexture 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.lineWidth 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.linkProgram 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.pixelStorei 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.polygonOffset 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.readPixels 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.renderbufferStorage 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.sampleCoverage 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.scissor 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.shaderSource 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.stencilFunc 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.stencilFuncSeparate 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.stencilMask 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.stencilMaskSeparate 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.stencilOp 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.stencilOpSeparate 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.texImage2D 📋Firefox3/22/2011 Safari7/20/2011120
Firefox for Android: Textures from video elements are not supported. See bug 1884282.
api.WebGLRenderingContext.texParameterf 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.texParameteri 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.texSubImage2D 📋Firefox3/22/2011 Safari7/20/2011120
Firefox for Android: Textures from video elements are not supported. See bug 1884282.
api.WebGLRenderingContext.uniform1f 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform1fv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform1i 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform1iv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform2f 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform2fv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform2i 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform2iv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform3f 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform3fv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform3i 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform3iv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform4f 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform4fv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform4i 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniform4iv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniformMatrix2fv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniformMatrix3fv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.uniformMatrix4fv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.useProgram 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.validateProgram 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.vertexAttrib1f 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.vertexAttrib1fv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.vertexAttrib2f 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.vertexAttrib2fv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.vertexAttrib3f 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.vertexAttrib3fv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.vertexAttrib4f 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.vertexAttrib4fv 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.vertexAttribPointer 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLRenderingContext.viewport 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLShader 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLShaderPrecisionFormat 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLShaderPrecisionFormat.precision 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLShaderPrecisionFormat.rangeMax 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLShaderPrecisionFormat.rangeMin 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLTexture 📋Firefox3/22/2011 Safari7/20/2011120
api.WebGLUniformLocation 📋Firefox3/22/2011 Safari7/20/2011120
api.Window.getComputedStyle.pseudo_element_support Firefox6/30/2009 Safari7/20/2011750

2011/6

API First Browser Date Last Browser Date Days Notes
api.CSSKeyframeRule.keyText 📋Safari6/8/2009 Firefox6/21/2011743
api.CSSKeyframeRule.style 📋Safari6/8/2009 Firefox6/21/2011743
api.CSSKeyframesRule.cssRules 📋Safari6/8/2009 Firefox6/21/2011743
api.CSSKeyframesRule.deleteRule 📋Safari6/8/2009 Firefox6/21/2011743
api.CSSKeyframesRule.findRule 📋Safari6/8/2009 Firefox6/21/2011743
api.CSSKeyframesRule.name 📋Safari6/8/2009 Firefox6/21/2011743
api.XMLHttpRequest.loadend_event 📋Safari6/8/2009 Firefox6/21/2011743
api.XMLHttpRequestUpload.loadend_event 📋Safari6/8/2009 Firefox6/21/2011743
api.console.debug_static 📋Safari6/8/2009 Firefox6/21/2011743
Node.js: Since Node.js 8.10.0, this method is an alias for console.log.

2011/3

API First Browser Date Last Browser Date Days Notes
api.DOMImplementation.createHTMLDocument 📋Safari6/23/2003 Firefox3/22/20112829
Internet Explorer: The title parameter is required, but can be empty string.
api.FormData 📋Safari6/7/2010 Firefox3/22/2011288
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 Firefox3/22/2011288
api.FormData.append 📋Safari6/7/2010 Firefox3/22/2011288
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.HTMLButtonElement.checkValidity 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLButtonElement.formNoValidate 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLButtonElement.setCustomValidity 📋Safari6/7/2010 Firefox3/22/2011288
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.validationMessage 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLButtonElement.validity 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLButtonElement.willValidate 📋Safari6/8/2009 Firefox3/22/2011652
api.HTMLElement.isContentEditable 📋Safari10/26/2007 Firefox3/22/20111243
api.HTMLFieldSetElement.checkValidity 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLFieldSetElement.setCustomValidity 📋Safari6/7/2010 Firefox3/22/2011288
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 Firefox3/22/2011288
api.HTMLFieldSetElement.validity 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLFieldSetElement.willValidate 📋Safari6/8/2009 Firefox3/22/2011652
api.HTMLFormElement.checkValidity 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLFormElement.noValidate 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLInputElement.checkValidity 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLInputElement.formAction 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLInputElement.formEnctype 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLInputElement.formMethod 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLInputElement.formNoValidate 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLInputElement.formTarget 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLInputElement.invalid_event 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLInputElement.pattern 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLInputElement.placeholder 📋Safari6/8/2009 Firefox3/22/2011652
api.HTMLInputElement.required 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLInputElement.setCustomValidity 📋Safari6/7/2010 Firefox3/22/2011288
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.validationMessage 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLInputElement.validity 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLInputElement.willValidate 📋Safari6/8/2009 Firefox3/22/2011652
api.HTMLMediaElement.buffered 📋Safari3/18/2008 Firefox3/22/20111099
api.HTMLMediaElement.preload 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLObjectElement.willValidate 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLOptionsCollection.remove 📋Safari3/18/2008 Firefox3/22/20111099
api.HTMLSelectElement.checkValidity 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLSelectElement.setCustomValidity 📋Safari6/7/2010 Firefox3/22/2011288
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.validationMessage 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLSelectElement.validity 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLSelectElement.willValidate 📋Safari6/8/2009 Firefox3/22/2011652
api.HTMLTextAreaElement.checkValidity 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLTextAreaElement.maxLength 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLTextAreaElement.placeholder 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLTextAreaElement.required 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLTextAreaElement.setCustomValidity 📋Safari6/7/2010 Firefox3/22/2011288
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.validationMessage 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLTextAreaElement.validity 📋Safari6/7/2010 Firefox3/22/2011288
api.HTMLTextAreaElement.willValidate 📋Safari6/8/2009 Firefox3/22/2011652
api.History.pushState 📋Safari6/7/2010 Firefox3/22/2011288
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 Firefox3/22/2011288
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.MediaError 📋Safari3/18/2008 Firefox3/22/20111099
api.Range.getBoundingClientRect 📋Safari6/7/2010 Firefox3/22/2011288
api.Range.getClientRects 📋Safari6/7/2010 Firefox3/22/2011288
api.SVGAElement.href 📋Safari10/26/2007 Firefox3/22/20111243
api.SVGAnimateElement 📋Safari10/26/2007 Firefox3/22/20111243
api.SVGAnimateTransformElement 📋Safari10/26/2007 Firefox3/22/20111243
api.SVGAnimationElement 📋Safari10/26/2007 Firefox3/22/20111243
api.SVGAnimationElement.beginElement 📋Safari6/8/2009 Firefox3/22/2011652
api.SVGAnimationElement.beginElementAt 📋Safari6/8/2009 Firefox3/22/2011652
api.SVGAnimationElement.endElement 📋Safari6/8/2009 Firefox3/22/2011652
api.SVGAnimationElement.endElementAt 📋Safari6/8/2009 Firefox3/22/2011652
api.SVGAnimationElement.getCurrentTime 📋Safari6/8/2009 Firefox3/22/2011652
api.SVGAnimationElement.getSimpleDuration 📋Safari6/8/2009 Firefox3/22/2011652
api.SVGAnimationElement.getStartTime 📋Safari6/8/2009 Firefox3/22/2011652
api.SVGAnimationElement.targetElement 📋Safari6/8/2009 Firefox3/22/2011652
api.SVGElement.load_event 📋Safari10/26/2007 Firefox3/22/20111243
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.SVGSetElement 📋Safari10/26/2007 Firefox3/22/20111243
api.Selection.modify 📋Safari4/15/2005 Firefox3/22/20112167
api.TimeRanges 📋Safari3/18/2008 Firefox3/22/20111099
api.TimeRanges.end 📋Safari3/18/2008 Firefox3/22/20111099
api.TimeRanges.length 📋Safari3/18/2008 Firefox3/22/20111099
api.TimeRanges.start 📋Safari3/18/2008 Firefox3/22/20111099
api.TreeWalker 📋Safari10/26/2007 Firefox3/22/20111243
api.TreeWalker.currentNode 📋Safari10/26/2007 Firefox3/22/20111243
api.TreeWalker.filter 📋Safari10/26/2007 Firefox3/22/20111243
api.TreeWalker.firstChild 📋Safari10/26/2007 Firefox3/22/20111243
api.TreeWalker.lastChild 📋Safari10/26/2007 Firefox3/22/20111243
api.TreeWalker.nextNode 📋Safari10/26/2007 Firefox3/22/20111243
api.TreeWalker.nextSibling 📋Safari10/26/2007 Firefox3/22/20111243
api.TreeWalker.parentNode 📋Safari10/26/2007 Firefox3/22/20111243
api.TreeWalker.previousNode 📋Safari10/26/2007 Firefox3/22/20111243
api.TreeWalker.previousSibling 📋Safari10/26/2007 Firefox3/22/20111243
api.TreeWalker.root 📋Safari10/26/2007 Firefox3/22/20111243
api.TreeWalker.whatToShow 📋Safari10/26/2007 Firefox3/22/20111243
api.ValidityState 📋Safari6/7/2010 Firefox3/22/2011288
api.ValidityState.customError 📋Safari6/7/2010 Firefox3/22/2011288
api.ValidityState.patternMismatch 📋Safari6/7/2010 Firefox3/22/2011288
api.ValidityState.rangeOverflow 📋Safari6/7/2010 Firefox3/22/2011288
api.ValidityState.rangeUnderflow 📋Safari6/7/2010 Firefox3/22/2011288
api.ValidityState.stepMismatch 📋Safari6/7/2010 Firefox3/22/2011288
api.ValidityState.tooLong 📋Safari6/7/2010 Firefox3/22/2011288
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 Firefox3/22/2011288
api.ValidityState.valid 📋Safari6/7/2010 Firefox3/22/2011288
api.ValidityState.valueMissing 📋Safari6/7/2010 Firefox3/22/2011288
api.Window.popstate_event 📋Safari6/7/2010 Firefox3/22/2011288
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.WorkerGlobalScope.importScripts 📋Safari6/8/2009 Firefox3/22/2011652
api.console 📋Safari10/26/2007 Firefox3/22/20111243
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.error_static 📋Safari10/26/2007 Firefox3/22/20111243
api.console.info_static 📋Safari10/26/2007 Firefox3/22/20111243
Node.js: Alias for console.log
api.console.log_static 📋Safari10/26/2007 Firefox3/22/20111243
api.console.warn_static 📋Safari10/26/2007 Firefox3/22/20111243
Node.js: Alias for console.error

2010/6

API First Browser Date Last Browser Date Days Notes
api.DataTransfer.setData 📋Firefox6/30/2009 Safari6/7/2010342
api.Geolocation 📋Firefox6/30/2009 Safari6/7/2010342
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 Safari6/7/2010342
api.Geolocation.getCurrentPosition 📋Firefox6/30/2009 Safari6/7/2010342
api.Geolocation.watchPosition 📋Firefox6/30/2009 Safari6/7/2010342
api.GeolocationCoordinates.accuracy 📋Firefox6/30/2009 Safari6/7/2010342
api.GeolocationCoordinates.altitude 📋Firefox6/30/2009 Safari6/7/2010342
api.GeolocationCoordinates.altitudeAccuracy 📋Firefox6/30/2009 Safari6/7/2010342
api.GeolocationCoordinates.heading 📋Firefox6/30/2009 Safari6/7/2010342
api.GeolocationCoordinates.latitude 📋Firefox6/30/2009 Safari6/7/2010342
api.GeolocationCoordinates.longitude 📋Firefox6/30/2009 Safari6/7/2010342
api.GeolocationCoordinates.speed 📋Firefox6/30/2009 Safari6/7/2010342
api.GeolocationPosition.coords 📋Firefox6/30/2009 Safari6/7/2010342
api.GeolocationPosition.timestamp 📋Firefox6/30/2009 Safari6/7/2010342
api.GeolocationPositionError.code 📋Firefox6/30/2009 Safari6/7/2010342
api.GeolocationPositionError.message 📋Firefox6/30/2009 Safari6/7/2010342
api.HTMLElement.draggable 📋Firefox10/24/2006 Safari6/7/20101322
api.HTMLTextAreaElement.textLength 📋Firefox11/9/2004 Safari6/7/20102036
api.HashChangeEvent 📋Firefox1/21/2010 Safari6/7/2010137
api.Navigator.geolocation 📋Firefox6/30/2009 Safari6/7/2010342
api.PageTransitionEvent 📋Firefox11/29/2005 Safari6/7/20101651
api.SVGAnimatedBoolean 📋Firefox6/17/2008 Safari6/7/2010720
api.SVGAnimatedInteger 📋Firefox6/17/2008 Safari6/7/2010720
api.SVGAnimatedNumberList 📋Firefox11/29/2005 Safari6/7/20101651
api.SVGAnimatedPreserveAspectRatio 📋Firefox11/29/2005 Safari6/7/20101651
api.SVGNumberList 📋Firefox11/29/2005 Safari6/7/20101651
api.Window.hashchange_event 📋Firefox1/21/2010 Safari6/7/2010137
Chrome: A regular Event object is fired, rather than a HashChangeEvent object.
api.crypto 📋Firefox11/9/2004 Safari6/7/20102036
Node.js: Available as a part of the crypto module.

2010/1

API First Browser Date Last Browser Date Days Notes
api.DataTransfer.files 📋Safari6/8/2009 Firefox1/21/2010227
api.Document.readyState 📋Safari6/23/2003 Firefox1/21/20102404
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.HTMLInputElement.indeterminate 📋Safari10/26/2007 Firefox1/21/2010818
api.HTMLInputElement.multiple 📋Safari6/8/2009 Firefox1/21/2010227
api.HTMLVideoElement.poster 📋Safari3/18/2008 Firefox1/21/2010674

2009/6

API First Browser Date Last Browser Date Days Notes
api.CSSFontFaceRule 📋Safari3/18/2008 Firefox6/30/2009469
api.CSSFontFaceRule.style 📋Safari3/18/2008 Firefox6/30/2009469
api.CanvasRenderingContext2D.createImageData 📋Safari6/8/2009 Firefox6/30/200922
api.CanvasRenderingContext2D.fillText 📋Safari6/8/2009 Firefox6/30/200922
api.CanvasRenderingContext2D.measureText 📋Safari6/8/2009 Firefox6/30/200922
api.CanvasRenderingContext2D.strokeText 📋Safari6/8/2009 Firefox6/30/200922
api.CanvasRenderingContext2D.textAlign 📋Safari6/8/2009 Firefox6/30/200922
api.CanvasRenderingContext2D.textBaseline 📋Safari6/8/2009 Firefox6/30/200922
api.DataTransfer 📋Safari6/8/2009 Firefox6/30/200922
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 Firefox6/30/200922
api.DataTransfer.dropEffect 📋Safari6/8/2009 Firefox6/30/200922
api.DataTransfer.effectAllowed 📋Safari6/8/2009 Firefox6/30/200922
api.DataTransfer.getData 📋Safari6/8/2009 Firefox6/30/200922
api.DataTransfer.setDragImage 📋Safari6/8/2009 Firefox6/30/200922
api.DataTransfer.types 📋Safari6/8/2009 Firefox6/30/200922
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 Firefox6/30/200922
api.DedicatedWorkerGlobalScope.close 📋Safari6/8/2009 Firefox6/30/200922
api.DedicatedWorkerGlobalScope.message_event 📋Safari6/8/2009 Firefox6/30/200922
api.DedicatedWorkerGlobalScope.postMessage 📋Safari6/8/2009 Firefox6/30/200922
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.Document.querySelector 📋Safari3/18/2008 Firefox6/30/2009469
Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors.
api.Document.querySelectorAll 📋Safari3/18/2008 Firefox6/30/2009469
Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors.
api.DocumentFragment.querySelector 📋Safari6/8/2009 Firefox6/30/200922
Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors.
api.DocumentFragment.querySelectorAll 📋Safari6/8/2009 Firefox6/30/200922
Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors.
api.Element.childElementCount 📋Safari6/8/2009 Firefox6/30/200922
api.Element.children 📋Safari6/8/2009 Firefox6/30/200922
Internet Explorer: Also includes non-standard HTMLCommentElement nodes.
api.Element.firstElementChild 📋Safari6/8/2009 Firefox6/30/200922
api.Element.lastElementChild 📋Safari6/8/2009 Firefox6/30/200922
api.Element.nextElementSibling 📋Safari6/8/2009 Firefox6/30/200922
api.Element.previousElementSibling 📋Safari6/8/2009 Firefox6/30/200922
api.Element.querySelector 📋Safari3/18/2008 Firefox6/30/2009469
Internet Explorer: querySelector() is supported, but only for CSS 2.1 selectors.
api.Element.querySelectorAll 📋Safari3/18/2008 Firefox6/30/2009469
Internet Explorer: querySelectorAll() is supported, but only for CSS 2.1 selectors.
api.HTMLAudioElement 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLAudioElement.Audio 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLElement.dragexit_event Safari3/18/2008 Firefox6/30/2009469
api.HTMLIFrameElement.getSVGDocument 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.autoplay 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.canPlayType 📋Safari6/8/2009 Firefox6/30/200922
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 Firefox6/30/2009469
api.HTMLMediaElement.canplaythrough_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.controls 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.currentSrc 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.currentTime 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.duration 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.durationchange_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.emptied_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.ended 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.ended_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.error 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.load 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.loadeddata_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.loadedmetadata_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.muted 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.networkState 📋Safari3/18/2008 Firefox6/30/2009469
Firefox: The NETWORK_LOADED state was removed to align with the HTML spec in Firefox 4.
api.HTMLMediaElement.pause 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.pause_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.paused 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.play 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.play_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.playing_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.ratechange_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.readyState 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.seeked_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.seeking 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.seeking_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.src 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.stalled_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.suspend_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.timeupdate_event 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLMediaElement.volume 📋Safari3/18/2008 Firefox6/30/2009469
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.HTMLObjectElement.getSVGDocument 📋Safari10/26/2007 Firefox6/30/2009613
api.HTMLScriptElement.defer 📋Safari10/26/2007 Firefox6/30/2009613
Internet Explorer: Before Internet Explorer 10, it implemented defer by a proprietary specification. Since version 10 it conforms to the W3C specification.
api.HTMLSourceElement 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLSourceElement.src 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLSourceElement.type 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLVideoElement 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLVideoElement.height 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLVideoElement.resize_event 📋Safari3/18/2008 Firefox6/30/2009469
Edge: The onresize event handler property is not supported.Internet Explorer: The onresize event handler property is not supported.
api.HTMLVideoElement.videoHeight 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLVideoElement.videoWidth 📋Safari3/18/2008 Firefox6/30/2009469
api.HTMLVideoElement.width 📋Safari3/18/2008 Firefox6/30/2009469
api.ImageData 📋Safari3/18/2008 Firefox6/30/2009469
api.ImageData.data 📋Safari3/18/2008 Firefox6/30/2009469
api.ImageData.height 📋Safari3/18/2008 Firefox6/30/2009469
api.ImageData.width 📋Safari3/18/2008 Firefox6/30/2009469
api.MediaError.code 📋Safari3/18/2008 Firefox6/30/2009469
api.NodeIterator 📋Safari10/26/2007 Firefox6/30/2009613
api.NodeIterator.detach 📋Safari10/26/2007 Firefox6/30/2009613
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 Firefox6/30/2009613
api.NodeIterator.nextNode 📋Safari10/26/2007 Firefox6/30/2009613
api.NodeIterator.pointerBeforeReferenceNode 📋Safari10/26/2007 Firefox6/30/2009613
api.NodeIterator.previousNode 📋Safari10/26/2007 Firefox6/30/2009613
api.NodeIterator.referenceNode 📋Safari10/26/2007 Firefox6/30/2009613
api.NodeIterator.root 📋Safari10/26/2007 Firefox6/30/2009613
api.NodeIterator.whatToShow 📋Safari10/26/2007 Firefox6/30/2009613
api.ProgressEvent 📋Safari3/18/2008 Firefox6/30/2009469
api.ProgressEvent.lengthComputable 📋Safari3/18/2008 Firefox6/30/2009469
api.ProgressEvent.loaded 📋Safari3/18/2008 Firefox6/30/2009469
api.ProgressEvent.total 📋Safari3/18/2008 Firefox6/30/2009469
api.Storage 📋Safari6/8/2009 Firefox6/30/200922
api.Storage.clear 📋Safari6/8/2009 Firefox6/30/200922
api.Storage.getItem 📋Safari6/8/2009 Firefox6/30/200922
api.Storage.key 📋Safari6/8/2009 Firefox6/30/200922
api.Storage.length 📋Safari6/8/2009 Firefox6/30/200922
api.Storage.removeItem 📋Safari6/8/2009 Firefox6/30/200922
api.Storage.setItem 📋Safari6/8/2009 Firefox6/30/200922
api.Text.wholeText 📋Safari6/8/2009 Firefox6/30/200922
api.Window.localStorage 📋Safari6/8/2009 Firefox6/30/200922
Deno: The key used for the Web Storage bucket is based on various factors. See the Deno manual.
api.Worker 📋Safari6/8/2009 Firefox6/30/200922
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 Firefox6/30/200922
Node.js: Takes entirely different options parameters.
api.Worker.error_event 📋Safari6/8/2009 Firefox6/30/200922
Node.js: Supports the event, but only via Node EventEmitter.
api.Worker.message_event 📋Safari6/8/2009 Firefox6/30/200922
Node.js: Supports the event, but only via Node EventEmitter.
api.Worker.postMessage 📋Safari6/8/2009 Firefox6/30/200922
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 Firefox6/30/200922
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 Firefox6/30/200922
api.WorkerGlobalScope.error_event 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerGlobalScope.location 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerGlobalScope.navigator 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerGlobalScope.self 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerLocation 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerLocation.hash 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerLocation.host 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerLocation.hostname 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerLocation.href 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerLocation.pathname 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerLocation.port 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerLocation.protocol 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerLocation.search 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerLocation.toString 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerNavigator 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerNavigator.appName 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerNavigator.appVersion 📋Safari6/8/2009 Firefox6/30/200922
api.WorkerNavigator.onLine 📋Safari6/8/2009 Firefox6/30/200922
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 Firefox6/30/200922
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 Firefox6/30/200922
api.XMLHttpRequest.abort_event 📋Safari4/15/2005 Firefox6/30/20091537
api.XMLHttpRequest.loadstart_event 📋Safari4/15/2005 Firefox6/30/20091537
api.XMLHttpRequest.upload 📋Safari6/8/2009 Firefox6/30/200922
api.XMLHttpRequest.withCredentials 📋Safari6/8/2009 Firefox6/30/200922
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 Firefox6/30/200922
api.XMLHttpRequestUpload 📋Safari6/8/2009 Firefox6/30/200922
api.XMLHttpRequestUpload.abort_event 📋Safari6/8/2009 Firefox6/30/200922
api.XMLHttpRequestUpload.error_event 📋Safari6/8/2009 Firefox6/30/200922
api.XMLHttpRequestUpload.load_event 📋Safari6/8/2009 Firefox6/30/200922
api.XMLHttpRequestUpload.loadstart_event 📋Safari6/8/2009 Firefox6/30/200922
api.XMLHttpRequestUpload.progress_event 📋Safari6/8/2009 Firefox6/30/200922
api.clearInterval.worker_support Safari6/8/2009 Firefox6/30/200922
api.clearTimeout.worker_support Safari6/8/2009 Firefox6/30/200922
api.setInterval.worker_support Safari6/8/2009 Firefox6/30/200922
api.setTimeout.worker_support Safari6/8/2009 Firefox6/30/200922
api.CanvasRenderingContext2D.getImageData 📋Firefox10/24/2006 Safari6/8/2009958
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.putImageData 📋Firefox10/24/2006 Safari6/8/2009958
api.CanvasRenderingContext2D.setTransform 📋Firefox6/17/2008 Safari6/8/2009356
api.DOMRect.height 📋Firefox6/17/2008 Safari6/8/2009356
api.DOMRect.width 📋Firefox6/17/2008 Safari6/8/2009356
api.DOMRectList.item 📋Firefox6/17/2008 Safari6/8/2009356
api.DOMRectList.length 📋Firefox6/17/2008 Safari6/8/2009356
api.DOMRectReadOnly.bottom 📋Firefox6/17/2008 Safari6/8/2009356
api.DOMRectReadOnly.height 📋Firefox6/17/2008 Safari6/8/2009356
api.DOMRectReadOnly.left 📋Firefox6/17/2008 Safari6/8/2009356
api.DOMRectReadOnly.right 📋Firefox6/17/2008 Safari6/8/2009356
api.DOMRectReadOnly.top 📋Firefox6/17/2008 Safari6/8/2009356
api.DOMRectReadOnly.width 📋Firefox6/17/2008 Safari6/8/2009356
api.Document.elementFromPoint 📋Firefox6/17/2008 Safari6/8/2009356
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.lastModified 📋Firefox11/9/2004 Safari6/8/20091672
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 Safari6/8/20091672
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.styleSheets 📋Firefox11/9/2004 Safari6/8/20091672
api.Document.title 📋Firefox11/9/2004 Safari6/8/20091672
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.Element.getBoundingClientRect 📋Firefox6/17/2008 Safari6/8/2009356
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 Safari6/8/2009356
api.FileList 📋Firefox6/17/2008 Safari6/8/2009356
api.FileList.item 📋Firefox6/17/2008 Safari6/8/2009356
api.FileList.length 📋Firefox6/17/2008 Safari6/8/2009356
api.HTMLCanvasElement.toDataURL 📋Firefox10/24/2006 Safari6/8/2009958
api.HTMLInputElement.files 📋Firefox6/17/2008 Safari6/8/2009356
Internet Explorer: This property is read-only.
api.HTMLTableElement.insertRow 📋Firefox11/9/2004 Safari6/8/20091672
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.MessageEvent 📋Firefox6/17/2008 Safari6/8/2009356
api.MessageEvent.data 📋Firefox6/17/2008 Safari6/8/2009356
api.MessageEvent.initMessageEvent 📋Firefox6/17/2008 Safari6/8/2009356
api.MessageEvent.lastEventId 📋Firefox6/17/2008 Safari6/8/2009356
api.MessageEvent.origin 📋Firefox6/17/2008 Safari6/8/2009356
api.MessageEvent.ports 📋Firefox6/17/2008 Safari6/8/2009356
api.MessageEvent.source 📋Firefox6/17/2008 Safari6/8/2009356
api.MimeTypeArray.item 📋Firefox11/9/2004 Safari6/8/20091672
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.namedItem 📋Firefox11/9/2004 Safari6/8/20091672
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.Navigator.onLine 📋Firefox11/29/2005 Safari6/8/20091287
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.Node.baseURI 📋Firefox11/9/2004 Safari6/8/20091672
api.Node.compareDocumentPosition 📋Firefox11/9/2004 Safari6/8/20091672
Internet Explorer: Only supports contains for elements
api.Plugin.item 📋Firefox11/9/2004 Safari6/8/20091672
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.namedItem 📋Firefox11/9/2004 Safari6/8/20091672
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.item 📋Firefox11/9/2004 Safari6/8/20091672
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.namedItem 📋Firefox11/9/2004 Safari6/8/20091672
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.SVGRectElement.rx 📋Firefox11/29/2005 Safari6/8/20091287
api.SVGRectElement.ry 📋Firefox11/29/2005 Safari6/8/20091287
api.SVGTransform 📋Firefox11/29/2005 Safari6/8/20091287
api.SVGTransform.angle 📋Firefox11/29/2005 Safari6/8/20091287
api.SVGTransform.matrix 📋Firefox11/29/2005 Safari6/8/20091287
api.SVGTransform.setMatrix 📋Firefox11/29/2005 Safari6/8/20091287
api.SVGTransform.setRotate 📋Firefox11/29/2005 Safari6/8/20091287
api.SVGTransform.setScale 📋Firefox11/29/2005 Safari6/8/20091287
api.SVGTransform.setSkewX 📋Firefox11/29/2005 Safari6/8/20091287
api.SVGTransform.setSkewY 📋Firefox11/29/2005 Safari6/8/20091287
api.SVGTransform.setTranslate 📋Firefox11/29/2005 Safari6/8/20091287
api.SVGTransform.type 📋Firefox11/29/2005 Safari6/8/20091287
api.TextMetrics 📋Firefox11/29/2005 Safari6/8/20091287
api.TextMetrics.width 📋Firefox11/29/2005 Safari6/8/20091287
api.Window.postMessage 📋Firefox6/17/2008 Safari6/8/2009356
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.sessionStorage 📋Firefox10/24/2006 Safari6/8/2009958
api.clearTimeout 📋Firefox11/9/2004 Safari6/8/20091672
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.

2008/6

API First Browser Date Last Browser Date Days Notes
api.CanvasRenderingContext2D.transform 📋Safari3/18/2008 Firefox6/17/200891
api.Document.getElementsByClassName 📋Safari3/18/2008 Firefox6/17/200891
api.Element.clientLeft 📋Safari10/26/2007 Firefox6/17/2008235
api.Element.clientTop 📋Safari10/26/2007 Firefox6/17/2008235
api.Element.getElementsByClassName 📋Safari3/18/2008 Firefox6/17/200891
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.HTMLElement.contentEditable 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGAElement 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGAElement.target 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGForeignObjectElement 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGForeignObjectElement.height 📋Safari3/18/2008 Firefox6/17/200891
api.SVGForeignObjectElement.width 📋Safari3/18/2008 Firefox6/17/200891
api.SVGForeignObjectElement.x 📋Safari3/18/2008 Firefox6/17/200891
api.SVGForeignObjectElement.y 📋Safari3/18/2008 Firefox6/17/200891
api.SVGMaskElement 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGMaskElement.height 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGMaskElement.maskContentUnits 📋Safari3/18/2008 Firefox6/17/200891
api.SVGMaskElement.maskUnits 📋Safari3/18/2008 Firefox6/17/200891
api.SVGMaskElement.width 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGMaskElement.x 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGMaskElement.y 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGPatternElement 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGPatternElement.height 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGPatternElement.href 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGPatternElement.patternContentUnits 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGPatternElement.patternTransform 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGPatternElement.patternUnits 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGPatternElement.preserveAspectRatio 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGPatternElement.viewBox 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGPatternElement.width 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGPatternElement.x 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGPatternElement.y 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGSwitchElement 📋Safari10/26/2007 Firefox6/17/2008235
api.SVGUnitTypes 📋Safari3/18/2008 Firefox6/17/200891

2008/3

API First Browser Date Last Browser Date Days Notes
api.CanvasRenderingContext2D.isPointInPath 📋Firefox10/24/2006 Safari3/18/2008511
api.Document.DOMContentLoaded_event 📋Firefox11/9/2004 Safari3/18/20081225
api.EventTarget.dispatchEvent 📋Firefox10/24/2006 Safari3/18/2008511
Internet Explorer: Older versions of IE supported an equivalent, proprietary EventTarget.fireEvent() method.
api.HTMLElement.tabIndex 📋Firefox11/9/2004 Safari3/18/20081225
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.SVGTextPathElement 📋Firefox10/24/2006 Safari3/18/2008511
api.SVGTextPathElement.href 📋Firefox10/24/2006 Safari3/18/2008511
api.Selection.containsNode 📋Firefox11/9/2004 Safari3/18/20081225
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 Safari3/18/20081225
api.Selection.extend 📋Firefox11/9/2004 Safari3/18/20081225
api.Selection.selectAllChildren 📋Firefox11/9/2004 Safari3/18/20081225
api.Window.DOMContentLoaded_event 📋Firefox11/9/2004 Safari3/18/20081225
api.XSLTProcessor 📋Firefox11/9/2004 Safari3/18/20081225
api.XSLTProcessor.XSLTProcessor 📋Firefox11/9/2004 Safari3/18/20081225
api.XSLTProcessor.clearParameters 📋Firefox11/9/2004 Safari3/18/20081225
api.XSLTProcessor.getParameter 📋Firefox11/9/2004 Safari3/18/20081225
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 Safari3/18/20081225
api.XSLTProcessor.removeParameter 📋Firefox11/9/2004 Safari3/18/20081225
api.XSLTProcessor.reset 📋Firefox11/9/2004 Safari3/18/20081225
api.XSLTProcessor.setParameter 📋Firefox11/9/2004 Safari3/18/20081225
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 Safari3/18/20081225
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 Safari3/18/20081225
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.

2007/10

API First Browser Date Last Browser Date Days Notes
api.BarProp 📋Firefox11/9/2004 Safari10/26/20071081
api.BarProp.visible 📋Firefox11/9/2004 Safari10/26/20071081
api.CDATASection 📋Firefox11/9/2004 Safari10/26/20071081
api.CSSMediaRule 📋Firefox11/9/2004 Safari10/26/20071081
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 Safari10/26/20071081
api.CanvasRenderingContext2D.arc 📋Firefox11/29/2005 Safari10/26/2007696
api.CanvasRenderingContext2D.canvas 📋Firefox11/29/2005 Safari10/26/2007696
api.CanvasRenderingContext2D.quadraticCurveTo 📋Firefox11/29/2005 Safari10/26/2007696
api.Comment 📋Firefox11/9/2004 Safari10/26/20071081
api.Document.adoptNode 📋Firefox11/9/2004 Safari10/26/20071081
api.Document.characterSet 📋Firefox11/9/2004 Safari10/26/20071081
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.createExpression 📋Firefox11/9/2004 Safari10/26/20071081
api.Document.createNSResolver 📋Firefox11/9/2004 Safari10/26/20071081
api.Document.createNodeIterator 📋Firefox11/9/2004 Safari10/26/20071081
api.Document.createTreeWalker 📋Firefox11/9/2004 Safari10/26/20071081
api.Document.documentURI 📋Firefox11/9/2004 Safari10/26/20071081
api.Document.evaluate 📋Firefox11/9/2004 Safari10/26/20071081
api.DocumentFragment 📋Firefox11/9/2004 Safari10/26/20071081
api.DocumentType 📋Firefox11/9/2004 Safari10/26/20071081
api.DocumentType.name 📋Firefox11/9/2004 Safari10/26/20071081
api.DocumentType.publicId 📋Firefox11/9/2004 Safari10/26/20071081
api.DocumentType.systemId 📋Firefox11/9/2004 Safari10/26/20071081
api.Element.clientHeight 📋Firefox11/9/2004 Safari10/26/20071081
api.Element.clientWidth 📋Firefox11/9/2004 Safari10/26/20071081
api.Element.scrollIntoView 📋Firefox11/9/2004 Safari10/26/20071081
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.HTMLBRElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLBRElement.clear 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLBaseElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLBaseElement.href 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLBaseElement.target 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLBodyElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLBodyElement.aLink 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLBodyElement.background 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLBodyElement.bgColor 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLBodyElement.link 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLBodyElement.text 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLBodyElement.vLink 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLButtonElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLButtonElement.disabled 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLButtonElement.form 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLButtonElement.name 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLButtonElement.type 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLButtonElement.value 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLCanvasElement.height 📋Firefox11/29/2005 Safari10/26/2007696
api.HTMLCanvasElement.width 📋Firefox11/29/2005 Safari10/26/2007696
api.HTMLDListElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLDListElement.compact 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLDivElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLDivElement.align 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLElement.blur 📋Firefox11/29/2005 Safari10/26/2007696
api.HTMLElement.change_event 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLElement.dir 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLElement.focus 📋Firefox11/29/2005 Safari10/26/2007696
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.lang 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLElement.offsetHeight 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLElement.offsetLeft 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLElement.offsetParent 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLElement.offsetTop 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLElement.offsetWidth 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLElement.style 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLElement.title 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLEmbedElement 📋Firefox11/9/2004 Safari10/26/20071081
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.align 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLEmbedElement.getSVGDocument 📋Firefox11/29/2005 Safari10/26/2007696
api.HTMLEmbedElement.height 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLEmbedElement.name 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLEmbedElement.src 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLEmbedElement.type 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLEmbedElement.width 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFieldSetElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFieldSetElement.form 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFontElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFontElement.color 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFontElement.face 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFontElement.size 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormControlsCollection 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormElement.acceptCharset 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormElement.action 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormElement.elements 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormElement.encoding 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormElement.enctype 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormElement.length 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormElement.method 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormElement.name 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormElement.reset 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormElement.submit 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormElement.submit_event 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFormElement.target 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameElement.contentDocument 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameElement.contentWindow 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameElement.frameBorder 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameElement.longDesc 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameElement.marginHeight 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameElement.marginWidth 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameElement.name 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameElement.noResize 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameElement.scrolling 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameElement.src 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameSetElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameSetElement.cols 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLFrameSetElement.rows 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLHeadingElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLHeadingElement.align 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLIFrameElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLIFrameElement.align 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLIFrameElement.contentDocument 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLIFrameElement.contentWindow 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLIFrameElement.frameBorder 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLIFrameElement.height 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLIFrameElement.longDesc 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLIFrameElement.marginHeight 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLIFrameElement.marginWidth 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLIFrameElement.name 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLIFrameElement.scrolling 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLIFrameElement.src 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLIFrameElement.width 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.align 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.alt 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.border 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.complete 📋Firefox11/9/2004 Safari10/26/20071081
Internet Explorer: IE reports false for broken images.
api.HTMLImageElement.height 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.hspace 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.isMap 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.longDesc 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.lowsrc 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.name 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.naturalHeight 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.naturalWidth 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.src 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.useMap 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.vspace 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLImageElement.width 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLInputElement.setSelectionRange 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLLabelElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLLabelElement.form 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLLabelElement.htmlFor 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLMapElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLMapElement.areas 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLMapElement.name 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLMenuElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLMenuElement.compact 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLModElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLModElement.cite 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLModElement.dateTime 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOListElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOListElement.compact 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOListElement.start 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOListElement.type 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.align 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.archive 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.border 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.code 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.codeBase 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.codeType 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.contentDocument 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.data 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.declare 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.form 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.height 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.hspace 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.name 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.standby 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.type 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.useMap 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.vspace 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLObjectElement.width 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOptGroupElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOptGroupElement.label 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOptionElement.defaultSelected 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOptionElement.disabled 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOptionElement.form 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOptionElement.index 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOptionElement.selected 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOptionElement.text 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOptionElement.value 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOptionsCollection 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOptionsCollection.add 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOptionsCollection.length 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLOptionsCollection.selectedIndex 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLParagraphElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLParagraphElement.align 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLParamElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLParamElement.name 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLParamElement.type 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLParamElement.value 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLParamElement.valueType 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLPreElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLPreElement.width 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLQuoteElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLQuoteElement.cite 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLScriptElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLScriptElement.charset 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLScriptElement.event 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLScriptElement.htmlFor 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLScriptElement.src 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLScriptElement.text 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLScriptElement.textContent 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLScriptElement.type 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLSelectElement.add 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLSelectElement.disabled 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLSelectElement.form 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLSelectElement.item 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLSelectElement.length 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLSelectElement.multiple 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLSelectElement.name 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLSelectElement.namedItem 📋Firefox11/9/2004 Safari10/26/20071081
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 Safari10/26/20071081
api.HTMLSelectElement.remove 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLSelectElement.selectedIndex 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLSelectElement.size 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLSelectElement.type 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLSelectElement.value 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCaptionElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCaptionElement.align 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.abbr 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.align 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.axis 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.bgColor 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.cellIndex 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.ch 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.chOff 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.colSpan 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.headers 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.height 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.noWrap 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.rowSpan 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.scope 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.vAlign 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableCellElement.width 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableColElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableColElement.align 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableColElement.ch 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableColElement.chOff 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableColElement.span 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableColElement.vAlign 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableColElement.width 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.align 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.bgColor 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.border 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.caption 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.cellPadding 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.cellSpacing 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.createCaption 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.createTFoot 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.createTHead 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.deleteCaption 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.deleteRow 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.deleteTFoot 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.deleteTHead 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.frame 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.rows 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.rules 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.summary 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.tBodies 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.tFoot 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.tHead 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableElement.width 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableRowElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableRowElement.align 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableRowElement.bgColor 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableRowElement.cells 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableRowElement.ch 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableRowElement.chOff 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableRowElement.deleteCell 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableRowElement.insertCell 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableRowElement.rowIndex 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableRowElement.sectionRowIndex 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableRowElement.vAlign 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableSectionElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableSectionElement.align 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableSectionElement.ch 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableSectionElement.chOff 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableSectionElement.deleteRow 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableSectionElement.insertRow 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableSectionElement.rows 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTableSectionElement.vAlign 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTitleElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLTitleElement.text 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLUListElement 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLUListElement.compact 📋Firefox11/9/2004 Safari10/26/20071081
api.HTMLUListElement.type 📋Firefox11/9/2004 Safari10/26/20071081
api.Location.assign 📋Firefox11/9/2004 Safari10/26/20071081
Deno: This method exists but has no effect in Deno. A location can be assigned using the --location runtime flag.
api.Navigator.vendorSub 📋Firefox11/9/2004 Safari10/26/20071081
api.Node.isDefaultNamespace 📋Firefox11/9/2004 Safari10/26/20071081
api.Node.isEqualNode 📋Firefox11/9/2004 Safari10/26/20071081
api.Node.lookupNamespaceURI 📋Firefox11/9/2004 Safari10/26/20071081
api.Node.lookupPrefix 📋Firefox11/9/2004 Safari10/26/20071081
api.Node.textContent 📋Firefox11/9/2004 Safari10/26/20071081
api.Range.comparePoint 📋Firefox11/9/2004 Safari10/26/20071081
api.Range.isPointInRange 📋Firefox11/9/2004 Safari10/26/20071081
api.SVGAngle 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAngle.convertToSpecifiedUnits 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAngle.newValueSpecifiedUnits 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAngle.unitType 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAngle.value 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAngle.valueAsString 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAngle.valueInSpecifiedUnits 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedAngle 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedAngle.animVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedAngle.baseVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedEnumeration 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedEnumeration.animVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedEnumeration.baseVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedLength 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedLength.animVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedLength.baseVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedLengthList 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedLengthList.animVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedLengthList.baseVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedNumber 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedNumber.animVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedNumber.baseVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedRect 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedString 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedString.animVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedString.baseVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedTransformList 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedTransformList.animVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGAnimatedTransformList.baseVal 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGCircleElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGCircleElement.cx 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGCircleElement.cy 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGCircleElement.r 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGClipPathElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGClipPathElement.clipPathUnits 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGClipPathElement.transform 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGDefsElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGDescElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGElement.className 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGElement.ownerSVGElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGElement.style 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGElement.viewportElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGEllipseElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGEllipseElement.cx 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGEllipseElement.cy 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGEllipseElement.rx 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGEllipseElement.ry 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGGElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGGradientElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGGradientElement.gradientTransform 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGGradientElement.gradientUnits 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGGradientElement.href 📋Firefox10/24/2006 Safari10/26/2007367
api.SVGGradientElement.spreadMethod 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGGraphicsElement.getBBox 📋Firefox11/29/2005 Safari10/26/2007696
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 Safari10/26/2007696
api.SVGGraphicsElement.getScreenCTM 📋Firefox11/29/2005 Safari10/26/2007696
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.transform 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGImageElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGImageElement.height 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGImageElement.href 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGImageElement.preserveAspectRatio 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGImageElement.width 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGImageElement.x 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGImageElement.y 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLength 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLength.convertToSpecifiedUnits 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLength.newValueSpecifiedUnits 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLength.unitType 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLength.value 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLength.valueAsString 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLength.valueInSpecifiedUnits 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLengthList 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLengthList.appendItem 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLengthList.clear 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLengthList.getItem 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLengthList.initialize 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLengthList.insertItemBefore 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLengthList.numberOfItems 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLengthList.removeItem 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLengthList.replaceItem 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLineElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLineElement.x1 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLineElement.x2 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLineElement.y1 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLineElement.y2 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLinearGradientElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLinearGradientElement.x1 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLinearGradientElement.x2 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLinearGradientElement.y1 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGLinearGradientElement.y2 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGMarkerElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGMarkerElement.markerHeight 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGMarkerElement.markerUnits 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGMarkerElement.markerWidth 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGMarkerElement.orientAngle 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGMarkerElement.orientType 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGMarkerElement.preserveAspectRatio 📋Firefox10/24/2006 Safari10/26/2007367
api.SVGMarkerElement.refX 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGMarkerElement.refY 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGMarkerElement.setOrientToAngle 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGMarkerElement.setOrientToAuto 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGMarkerElement.viewBox 📋Firefox10/24/2006 Safari10/26/2007367
api.SVGMetadataElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGNumber 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGNumber.value 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPathElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPathElement.getPointAtLength 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPathElement.getTotalLength 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPathElement.pathLength 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPoint 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPoint.matrixTransform 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPoint.x 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPoint.y 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPointList 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPointList.appendItem 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPointList.clear 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPointList.getItem 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPointList.initialize 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPointList.insertItemBefore 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPointList.numberOfItems 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPointList.removeItem 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPointList.replaceItem 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPolygonElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPolygonElement.animatedPoints 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPolygonElement.points 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPolylineElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPolylineElement.animatedPoints 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPolylineElement.points 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPreserveAspectRatio 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPreserveAspectRatio.align 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGPreserveAspectRatio.meetOrSlice 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGRadialGradientElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGRadialGradientElement.cx 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGRadialGradientElement.cy 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGRadialGradientElement.fx 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGRadialGradientElement.fy 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGRadialGradientElement.r 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGRect 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGRect.height Firefox11/29/2005 Safari10/26/2007696
api.SVGRect.width Firefox11/29/2005 Safari10/26/2007696
api.SVGRect.x Firefox11/29/2005 Safari10/26/2007696
api.SVGRect.y Firefox11/29/2005 Safari10/26/2007696
api.SVGRectElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGRectElement.height 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGRectElement.width 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGRectElement.x 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGRectElement.y 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.animationsPaused 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.createSVGAngle 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.createSVGLength 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.createSVGMatrix 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.createSVGNumber 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.createSVGPoint 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.createSVGRect 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.createSVGTransform 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.createSVGTransformFromMatrix 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.currentScale 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.currentTranslate 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.forceRedraw 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.getCurrentTime 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.height 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.pauseAnimations 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.preserveAspectRatio 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.setCurrentTime 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.suspendRedraw 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.unpauseAnimations 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.unsuspendRedraw 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.unsuspendRedrawAll 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.viewBox 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.width 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.x 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSVGElement.y 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGScriptElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGScriptElement.href 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGScriptElement.type 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGStopElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGStopElement.offset 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGStyleElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGStyleElement.media 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGStyleElement.title 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGStyleElement.type 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSymbolElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSymbolElement.preserveAspectRatio 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGSymbolElement.viewBox 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTSpanElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextContentElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextContentElement.getCharNumAtPosition 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextContentElement.getComputedTextLength 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextContentElement.getEndPositionOfChar 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextContentElement.getExtentOfChar 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextContentElement.getNumberOfChars 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextContentElement.getRotationOfChar 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextContentElement.getStartPositionOfChar 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextContentElement.getSubStringLength 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextContentElement.lengthAdjust 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextContentElement.selectSubString 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextContentElement.textLength 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextPositioningElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextPositioningElement.dx 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextPositioningElement.dy 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextPositioningElement.rotate 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextPositioningElement.x 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTextPositioningElement.y 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTitleElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTransformList 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTransformList.appendItem 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTransformList.clear 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTransformList.consolidate 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTransformList.createSVGTransformFromMatrix 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTransformList.getItem 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTransformList.initialize 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTransformList.insertItemBefore 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTransformList.numberOfItems 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTransformList.removeItem 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGTransformList.replaceItem 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGUseElement 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGUseElement.height 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGUseElement.href 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGUseElement.width 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGUseElement.x 📋Firefox11/29/2005 Safari10/26/2007696
api.SVGUseElement.y 📋Firefox11/29/2005 Safari10/26/2007696
api.Selection.addRange 📋Firefox11/9/2004 Safari10/26/20071081
api.Selection.getRangeAt 📋Firefox11/9/2004 Safari10/26/20071081
api.Selection.rangeCount 📋Firefox11/9/2004 Safari10/26/20071081
api.Selection.removeAllRanges 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.beforeunload_event 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.beforeunload_event.return_string_activation Firefox11/9/2004 Safari10/26/20071081
api.Window.find Firefox11/9/2004 Safari10/26/20071081
api.Window.frameElement 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.getComputedStyle 📋Firefox11/9/2004 Safari10/26/20071081
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.innerHeight 📋Firefox11/9/2004 Safari10/26/20071081
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 Safari10/26/20071081
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.locationbar 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.menubar 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.outerHeight 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.outerWidth 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.personalbar 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.scrollbars 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.self 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.statusbar 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.stop 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.toolbar 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.top 📋Firefox11/9/2004 Safari10/26/20071081
Firefox: Starting in Firefox 6, this property is read only, as defined by the standard.
api.Window.unload_event 📋Firefox11/9/2004 Safari10/26/20071081
api.Window.window 📋Firefox11/9/2004 Safari10/26/20071081
api.XMLHttpRequest.XMLHttpRequest 📋Firefox11/9/2004 Safari10/26/20071081
api.XMLHttpRequest.progress_event 📋Firefox11/9/2004 Safari10/26/20071081
api.XMLHttpRequest.responseXML 📋Firefox11/9/2004 Safari10/26/20071081
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.XMLSerializer 📋Firefox11/9/2004 Safari10/26/20071081
api.XMLSerializer.XMLSerializer 📋Firefox11/9/2004 Safari10/26/20071081
api.XMLSerializer.serializeToString 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathEvaluator 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathEvaluator.XPathEvaluator 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathEvaluator.createExpression 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathEvaluator.createNSResolver 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathEvaluator.evaluate 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathExpression 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathExpression.evaluate 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathResult 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathResult.booleanValue 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathResult.invalidIteratorState 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathResult.iterateNext 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathResult.numberValue 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathResult.resultType 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathResult.singleNodeValue 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathResult.snapshotItem 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathResult.snapshotLength 📋Firefox11/9/2004 Safari10/26/20071081
api.XPathResult.stringValue 📋Firefox11/9/2004 Safari10/26/20071081
api.atob 📋Firefox11/9/2004 Safari10/26/20071081
api.btoa 📋Firefox11/9/2004 Safari10/26/20071081

2005/11

API First Browser Date Last Browser Date Days Notes
api.CanvasGradient 📋Safari4/29/2005 Firefox11/29/2005214
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 Firefox11/29/2005214
api.CanvasPattern 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.arcTo 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.beginPath 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.bezierCurveTo 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.clearRect 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.clip 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.closePath 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.createLinearGradient 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.createPattern 📋Safari4/29/2005 Firefox11/29/2005214
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 Firefox11/29/2005214
api.CanvasRenderingContext2D.drawImage 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.fill 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.fillRect 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.fillStyle 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.globalAlpha 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.globalCompositeOperation 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.lineCap 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.lineJoin 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.lineTo 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.lineWidth 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.miterLimit 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.moveTo 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.rect 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.restore 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.rotate 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.save 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.scale 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.shadowBlur 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.shadowColor 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.shadowOffsetX 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.shadowOffsetY 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.stroke 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.strokeRect 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.strokeStyle 📋Safari4/29/2005 Firefox11/29/2005214
api.CanvasRenderingContext2D.translate 📋Safari4/29/2005 Firefox11/29/2005214
api.Event.bubbles 📋Safari6/23/2003 Firefox11/29/2005890
Node.js: This is not used in Node.js and is provided purely for completeness.
api.Event.cancelable 📋Safari6/23/2003 Firefox11/29/2005890
api.Event.eventPhase 📋Safari6/23/2003 Firefox11/29/2005890
api.Event.timeStamp 📋Safari6/23/2003 Firefox11/29/2005890
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 Firefox11/29/2005890
api.HTMLCanvasElement 📋Safari4/29/2005 Firefox11/29/2005214
api.HTMLCanvasElement.getContext 📋Safari4/29/2005 Firefox11/29/2005214
api.HTMLCanvasElement.getContext.2d_context Safari4/29/2005 Firefox11/29/2005214
api.KeyboardEvent 📋Safari2/2/2004 Firefox11/29/2005666
api.KeyboardEvent.altKey 📋Safari2/2/2004 Firefox11/29/2005666
api.KeyboardEvent.charCode 📋Safari2/2/2004 Firefox11/29/2005666
api.KeyboardEvent.ctrlKey 📋Safari2/2/2004 Firefox11/29/2005666
api.KeyboardEvent.keyCode 📋Safari2/2/2004 Firefox11/29/2005666
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.metaKey 📋Safari2/2/2004 Firefox11/29/2005666
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 Firefox11/29/2005666
api.MouseEvent.altKey 📋Safari6/23/2003 Firefox11/29/2005890
api.MouseEvent.clientY 📋Safari6/23/2003 Firefox11/29/2005890
api.MouseEvent.ctrlKey 📋Safari6/23/2003 Firefox11/29/2005890
api.MouseEvent.initMouseEvent 📋Safari6/23/2003 Firefox11/29/2005890
api.MouseEvent.metaKey 📋Safari6/23/2003 Firefox11/29/2005890
api.MouseEvent.pageX 📋Safari6/23/2003 Firefox11/29/2005890
api.MouseEvent.pageY 📋Safari6/23/2003 Firefox11/29/2005890
api.MouseEvent.relatedTarget 📋Safari6/23/2003 Firefox11/29/2005890
api.MouseEvent.screenX 📋Safari6/23/2003 Firefox11/29/2005890
api.MouseEvent.screenY 📋Safari6/23/2003 Firefox11/29/2005890
api.MouseEvent.shiftKey 📋Safari6/23/2003 Firefox11/29/2005890

2005/4

API First Browser Date Last Browser Date Days Notes
api.DOMParser 📋Firefox11/9/2004 Safari4/15/2005157
api.DOMParser.DOMParser 📋Firefox11/9/2004 Safari4/15/2005157
api.DOMParser.parseFromString 📋Firefox11/9/2004 Safari4/15/2005157
api.DOMParser.parseFromString.xml Firefox11/9/2004 Safari4/15/2005157
api.Document.execCommand.insertHTML Firefox11/9/2004 Safari4/15/2005157
api.HTMLElement.load_event 📋Firefox11/9/2004 Safari4/15/2005157
api.HTMLInputElement.selectionEnd 📋Firefox11/9/2004 Safari4/15/2005157
api.HTMLInputElement.selectionStart 📋Firefox11/9/2004 Safari4/15/2005157
api.HTMLTextAreaElement.selectionEnd 📋Firefox11/9/2004 Safari4/15/2005157
api.HTMLTextAreaElement.selectionStart 📋Firefox11/9/2004 Safari4/15/2005157
api.HTMLTextAreaElement.setSelectionRange 📋Firefox11/9/2004 Safari4/15/2005157
api.Selection 📋Firefox11/9/2004 Safari4/15/2005157
api.Selection.anchorNode 📋Firefox11/9/2004 Safari4/15/2005157
api.Selection.anchorOffset 📋Firefox11/9/2004 Safari4/15/2005157
api.Selection.collapse 📋Firefox11/9/2004 Safari4/15/2005157
api.Selection.collapseToEnd 📋Firefox11/9/2004 Safari4/15/2005157
api.Selection.collapseToStart 📋Firefox11/9/2004 Safari4/15/2005157
api.Selection.focusNode 📋Firefox11/9/2004 Safari4/15/2005157
api.Selection.focusOffset 📋Firefox11/9/2004 Safari4/15/2005157
api.Selection.isCollapsed 📋Firefox11/9/2004 Safari4/15/2005157
api.Selection.toString 📋Firefox11/9/2004 Safari4/15/2005157
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.Window.load_event 📋Firefox11/9/2004 Safari4/15/2005157
api.Window.parent 📋Firefox11/9/2004 Safari4/15/2005157
api.XMLHttpRequest.error_event 📋Firefox11/9/2004 Safari4/15/2005157
api.XMLHttpRequest.load_event 📋Firefox11/9/2004 Safari4/15/2005157

2004/11

API First Browser Date Last Browser Date Days Notes
api.Attr 📋Safari6/23/2003 Firefox11/9/2004505
api.Attr.localName 📋Safari6/23/2003 Firefox11/9/2004505
api.Attr.name 📋Safari6/23/2003 Firefox11/9/2004505
api.Attr.namespaceURI 📋Safari6/23/2003 Firefox11/9/2004505
api.Attr.ownerElement 📋Safari6/23/2003 Firefox11/9/2004505
api.Attr.prefix 📋Safari6/23/2003 Firefox11/9/2004505
api.Attr.specified 📋Safari6/23/2003 Firefox11/9/2004505
api.Attr.value 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSImportRule 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSImportRule.href 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSImportRule.media 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSImportRule.styleSheet 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSRule 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSRule.cssText 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.CSSRule.parentStyleSheet 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSRule.type 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSRuleList 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSRuleList.item 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSRuleList.length 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleDeclaration 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleDeclaration.cssText 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleDeclaration.getPropertyPriority 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleDeclaration.getPropertyValue 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleDeclaration.parentRule 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleDeclaration.removeProperty 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleRule 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleRule.selectorText 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleRule.style 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleSheet 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleSheet.cssRules 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleSheet.deleteRule 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleSheet.insertRule 📋Safari6/23/2003 Firefox11/9/2004505
api.CSSStyleSheet.ownerRule 📋Safari6/23/2003 Firefox11/9/2004505
api.CharacterData 📋Safari6/23/2003 Firefox11/9/2004505
api.CharacterData.appendData 📋Safari6/23/2003 Firefox11/9/2004505
api.CharacterData.data 📋Safari6/23/2003 Firefox11/9/2004505
api.CharacterData.deleteData 📋Safari6/23/2003 Firefox11/9/2004505
api.CharacterData.insertData 📋Safari6/23/2003 Firefox11/9/2004505
api.CharacterData.length 📋Safari6/23/2003 Firefox11/9/2004505
api.CharacterData.replaceData 📋Safari6/23/2003 Firefox11/9/2004505
api.CharacterData.substringData 📋Safari6/23/2003 Firefox11/9/2004505
api.DOMException 📋Safari6/23/2003 Firefox11/9/2004505
api.DOMException.code 📋Safari6/23/2003 Firefox11/9/2004505
api.DOMException.message 📋Safari6/23/2003 Firefox11/9/2004505
api.DOMException.name 📋Safari6/23/2003 Firefox11/9/2004505
api.DOMImplementation 📋Safari6/23/2003 Firefox11/9/2004505
api.DOMImplementation.createDocument 📋Safari6/23/2003 Firefox11/9/2004505
api.DOMImplementation.createDocumentType 📋Safari6/23/2003 Firefox11/9/2004505
api.DOMImplementation.hasFeature 📋Safari6/23/2003 Firefox11/9/2004505
Firefox: Since Firefox 19, hasFeature() mostly returns true.
api.Document 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.createAttributeNS 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.createCDATASection 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.createComment 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.createDocumentFragment 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.createElement 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
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 Firefox11/9/2004505
Firefox: From version 67, creating touch events using this method is no longer supported.
api.Document.createProcessingInstruction 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.createRange 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.createTextNode 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.defaultView 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.doctype 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.documentElement 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.getElementById 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.getElementsByTagName 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.getElementsByTagNameNS 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.implementation 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.importNode 📋Safari6/23/2003 Firefox11/9/2004505
api.Document.referrer 📋Safari6/23/2003 Firefox11/9/2004505
api.Element 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.DOMActivate_event 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.attributes 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.className 📋Safari6/23/2003 Firefox11/9/2004505
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.getAttribute 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.getAttributeNS 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Element.getAttributeNodeNS 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.getElementsByTagName 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Element.getElementsByTagNameNS 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Element.hasAttribute 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.hasAttributeNS 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.hasAttributes 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Element.localName 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.namespaceURI 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.prefix 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.removeAttribute 📋Safari6/23/2003 Firefox11/9/2004505
Edge: This function doesn't respect boolean attributes' default values. See bug 12087679.
api.Element.removeAttributeNS 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.removeAttributeNode 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.scrollLeft 📋Safari6/23/2003 Firefox11/9/2004505
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.
api.Element.scrollTop 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.scrollWidth 📋Safari6/23/2003 Firefox11/9/2004505
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.setAttribute 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Element.setAttributeNode 📋Safari6/23/2003 Firefox11/9/2004505
api.Element.setAttributeNodeNS 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Event 📋Safari6/23/2003 Firefox11/9/2004505
Node.js: Only available as an internal instance.
api.Event.currentTarget 📋Safari6/23/2003 Firefox11/9/2004505
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.preventDefault 📋Safari6/23/2003 Firefox11/9/2004505
api.Event.stopPropagation 📋Safari6/23/2003 Firefox11/9/2004505
Node.js: This is not used in Node.js and is provided purely for completeness.
api.Event.target 📋Safari6/23/2003 Firefox11/9/2004505
api.EventTarget 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
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.removeEventListener 📋Safari6/23/2003 Firefox11/9/2004505
Internet Explorer: Older versions of IE supported an equivalent, proprietary EventTarget.detachEvent() method.
api.HTMLAnchorElement 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAnchorElement.charset 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAnchorElement.coords 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAnchorElement.hash 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
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 Firefox11/9/2004505
api.HTMLAnchorElement.href 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAnchorElement.hreflang 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAnchorElement.name 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAnchorElement.pathname 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.HTMLAnchorElement.protocol 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAnchorElement.rel 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAnchorElement.rev 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAnchorElement.search 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.HTMLAnchorElement.target 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAnchorElement.text 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAnchorElement.type 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAreaElement 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAreaElement.alt 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAreaElement.coords 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAreaElement.hash 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
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 Firefox11/9/2004505
api.HTMLAreaElement.href 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAreaElement.noHref 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAreaElement.pathname 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.HTMLAreaElement.protocol 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLAreaElement.search 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.HTMLAreaElement.target 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLCollection 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLCollection.item 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLCollection.length 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLCollection.namedItem 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLDirectoryElement Safari6/23/2003 Firefox11/9/2004505
api.HTMLDirectoryElement.compact 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLDocument 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLElement 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLElement.error_event 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLHRElement 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLHRElement.align 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLHRElement.noShade 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLHRElement.size 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLHRElement.width 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLHeadElement 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLHtmlElement 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLHtmlElement.version 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLImageElement 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLImageElement.Image 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.accept 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.align 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.alt 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.checked 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.defaultChecked 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.defaultValue 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.disabled 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.form 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.maxLength 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.name 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.readOnly 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.select 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.size 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.src 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.type 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.useMap 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLInputElement.value 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLLIElement 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.HTMLLIElement.value 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLLegendElement 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLLegendElement.align 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLLegendElement.form 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLLinkElement 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLLinkElement.charset 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLLinkElement.disabled 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.HTMLLinkElement.hreflang 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLLinkElement.media 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLLinkElement.rel 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLLinkElement.rev 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLLinkElement.sheet 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLLinkElement.target 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLLinkElement.type 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLMetaElement 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLMetaElement.content 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLMetaElement.httpEquiv 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLMetaElement.name 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLMetaElement.scheme 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLOptionElement 📋Safari2/2/2004 Firefox11/9/2004281
api.HTMLOptionElement.Option 📋Safari2/2/2004 Firefox11/9/2004281
Internet Explorer: Before Internet Explorer 9, the outerHTML of elements lose their text when constructing with new Option().
api.HTMLSelectElement 📋Safari6/23/2003 Firefox11/9/2004505
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.HTMLStyleElement 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLStyleElement.disabled 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLStyleElement.media 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLStyleElement.sheet 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLStyleElement.type 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLTextAreaElement 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLTextAreaElement.cols 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLTextAreaElement.defaultValue 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLTextAreaElement.disabled 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLTextAreaElement.form 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLTextAreaElement.name 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLTextAreaElement.readOnly 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLTextAreaElement.rows 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLTextAreaElement.select 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLTextAreaElement.type 📋Safari6/23/2003 Firefox11/9/2004505
api.HTMLTextAreaElement.value 📋Safari6/23/2003 Firefox11/9/2004505
api.History 📋Safari6/23/2003 Firefox11/9/2004505
api.History.back 📋Safari6/23/2003 Firefox11/9/2004505
api.History.forward 📋Safari6/23/2003 Firefox11/9/2004505
api.History.go 📋Safari6/23/2003 Firefox11/9/2004505
api.History.length 📋Safari6/23/2003 Firefox11/9/2004505
api.Location 📋Safari6/23/2003 Firefox11/9/2004505
api.Location.hash 📋Safari6/23/2003 Firefox11/9/2004505
api.Location.host 📋Safari6/23/2003 Firefox11/9/2004505
api.Location.hostname 📋Safari6/23/2003 Firefox11/9/2004505
api.Location.href 📋Safari6/23/2003 Firefox11/9/2004505
api.Location.pathname 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Location.protocol 📋Safari6/23/2003 Firefox11/9/2004505
api.Location.reload 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
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 Firefox11/9/2004505
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.MediaList 📋Safari6/23/2003 Firefox11/9/2004505
api.MediaList.appendMedium 📋Safari6/23/2003 Firefox11/9/2004505
api.MediaList.deleteMedium 📋Safari6/23/2003 Firefox11/9/2004505
api.MediaList.item 📋Safari6/23/2003 Firefox11/9/2004505
api.MediaList.length 📋Safari6/23/2003 Firefox11/9/2004505
api.MediaList.mediaText 📋Safari6/23/2003 Firefox11/9/2004505
api.MediaList.toString 📋Safari6/23/2003 Firefox11/9/2004505
api.MimeType 📋Safari6/23/2003 Firefox11/9/2004505
api.MimeType.description 📋Safari6/23/2003 Firefox11/9/2004505
api.MimeType.enabledPlugin 📋Safari6/23/2003 Firefox11/9/2004505
api.MimeType.suffixes 📋Safari6/23/2003 Firefox11/9/2004505
api.MimeType.type 📋Safari6/23/2003 Firefox11/9/2004505
api.MimeTypeArray 📋Safari6/23/2003 Firefox11/9/2004505
api.MimeTypeArray.length 📋Safari6/23/2003 Firefox11/9/2004505
api.MouseEvent 📋Safari6/23/2003 Firefox11/9/2004505
api.MouseEvent.button 📋Safari6/23/2003 Firefox11/9/2004505
api.MouseEvent.clientX 📋Safari6/23/2003 Firefox11/9/2004505
api.MouseEvent.layerX Safari6/23/2003 Firefox11/9/2004505
api.MouseEvent.layerY Safari6/23/2003 Firefox11/9/2004505
api.NamedNodeMap.getNamedItem 📋Safari6/23/2003 Firefox11/9/2004505
api.NamedNodeMap.getNamedItemNS 📋Safari6/23/2003 Firefox11/9/2004505
api.NamedNodeMap.item 📋Safari6/23/2003 Firefox11/9/2004505
api.NamedNodeMap.length 📋Safari6/23/2003 Firefox11/9/2004505
api.NamedNodeMap.removeNamedItem 📋Safari6/23/2003 Firefox11/9/2004505
api.NamedNodeMap.removeNamedItemNS 📋Safari6/23/2003 Firefox11/9/2004505
api.NamedNodeMap.setNamedItem 📋Safari6/23/2003 Firefox11/9/2004505
api.NamedNodeMap.setNamedItemNS 📋Safari6/23/2003 Firefox11/9/2004505
api.Navigator 📋Safari6/23/2003 Firefox11/9/2004505
api.Navigator.appCodeName 📋Safari6/23/2003 Firefox11/9/2004505
api.Navigator.appName 📋Safari6/23/2003 Firefox11/9/2004505
api.Navigator.appVersion 📋Safari6/23/2003 Firefox11/9/2004505
api.Navigator.javaEnabled 📋Safari6/23/2003 Firefox11/9/2004505
api.Navigator.language 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Navigator.platform 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Navigator.product 📋Safari6/23/2003 Firefox11/9/2004505
api.Navigator.productSub 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Navigator.vendor 📋Safari6/23/2003 Firefox11/9/2004505
api.Node 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004382
api.Node.childNodes 📋Safari2/2/2004 Firefox11/9/2004281
api.Node.cloneNode 📋Safari10/24/2003 Firefox11/9/2004382
api.Node.firstChild 📋Safari6/23/2003 Firefox11/9/2004505
api.Node.hasChildNodes 📋Safari6/23/2003 Firefox11/9/2004505
api.Node.insertBefore 📋Safari10/24/2003 Firefox11/9/2004382
api.Node.lastChild 📋Safari6/23/2003 Firefox11/9/2004505
api.Node.nextSibling 📋Safari10/24/2003 Firefox11/9/2004382
api.Node.nodeName 📋Safari6/23/2003 Firefox11/9/2004505
api.Node.nodeType 📋Safari10/24/2003 Firefox11/9/2004382
api.Node.nodeValue 📋Safari6/23/2003 Firefox11/9/2004505
api.Node.normalize 📋Safari6/23/2003 Firefox11/9/2004505
api.Node.parentNode 📋Safari10/24/2003 Firefox11/9/2004382
api.Node.previousSibling 📋Safari6/23/2003 Firefox11/9/2004505
api.Node.removeChild 📋Safari10/24/2003 Firefox11/9/2004382
api.Node.replaceChild 📋Safari10/24/2003 Firefox11/9/2004382
api.NodeList 📋Safari6/23/2003 Firefox11/9/2004505
api.NodeList.item 📋Safari6/23/2003 Firefox11/9/2004505
api.NodeList.length 📋Safari6/23/2003 Firefox11/9/2004505
api.Plugin 📋Safari6/23/2003 Firefox11/9/2004505
api.Plugin.description 📋Safari6/23/2003 Firefox11/9/2004505
api.Plugin.filename 📋Safari6/23/2003 Firefox11/9/2004505
api.Plugin.length 📋Safari6/23/2003 Firefox11/9/2004505
api.Plugin.name 📋Safari6/23/2003 Firefox11/9/2004505
api.PluginArray 📋Safari6/23/2003 Firefox11/9/2004505
api.PluginArray.length 📋Safari6/23/2003 Firefox11/9/2004505
api.PluginArray.refresh 📋Safari6/23/2003 Firefox11/9/2004505
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.ProcessingInstruction 📋Safari6/23/2003 Firefox11/9/2004505
api.ProcessingInstruction.sheet 📋Safari6/23/2003 Firefox11/9/2004505
api.ProcessingInstruction.target 📋Safari6/23/2003 Firefox11/9/2004505
api.Range 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Range.cloneRange 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.collapse 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.collapsed 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.commonAncestorContainer 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.compareBoundaryPoints 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.createContextualFragment 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.deleteContents 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.detach 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Range.endOffset 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.extractContents 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.insertNode 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.selectNode 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.selectNodeContents 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.setEnd 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.setEndAfter 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.setEndBefore 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.setStart 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.setStartAfter 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.setStartBefore 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.startContainer 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.startOffset 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.surroundContents 📋Safari6/23/2003 Firefox11/9/2004505
api.Range.toString 📋Safari6/23/2003 Firefox11/9/2004505
api.Screen 📋Safari6/23/2003 Firefox11/9/2004505
api.Screen.availHeight 📋Safari6/23/2003 Firefox11/9/2004505
Edge: Always reflects the main screen.
api.Screen.availLeft Safari6/23/2003 Firefox11/9/2004505
api.Screen.availLeft.relative-multi-screen Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Screen.availTop.relative-multi-screen Safari6/23/2003 Firefox11/9/2004505
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.availWidth 📋Safari6/23/2003 Firefox11/9/2004505
Edge: Always reflects the main screen.
api.Screen.colorDepth 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Screen.pixelDepth 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.StyleSheet 📋Safari6/23/2003 Firefox11/9/2004505
api.StyleSheet.disabled 📋Safari6/23/2003 Firefox11/9/2004505
api.StyleSheet.href 📋Safari6/23/2003 Firefox11/9/2004505
api.StyleSheet.media 📋Safari6/23/2003 Firefox11/9/2004505
api.StyleSheet.ownerNode 📋Safari6/23/2003 Firefox11/9/2004505
api.StyleSheet.parentStyleSheet 📋Safari6/23/2003 Firefox11/9/2004505
api.StyleSheet.title 📋Safari6/23/2003 Firefox11/9/2004505
api.StyleSheet.type 📋Safari6/23/2003 Firefox11/9/2004505
api.StyleSheetList 📋Safari6/23/2003 Firefox11/9/2004505
api.StyleSheetList.item 📋Safari6/23/2003 Firefox11/9/2004505
api.StyleSheetList.length 📋Safari6/23/2003 Firefox11/9/2004505
api.Text 📋Safari6/23/2003 Firefox11/9/2004505
api.Text.splitText 📋Safari6/23/2003 Firefox11/9/2004505
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.UIEvent 📋Safari6/23/2003 Firefox11/9/2004505
api.UIEvent.detail 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.UIEvent.view 📋Safari6/23/2003 Firefox11/9/2004505
api.UIEvent.which 📋Safari6/23/2003 Firefox11/9/2004505
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.Window 📋Safari6/23/2003 Firefox11/9/2004505
Node.js: The Window interface is not implemented, but some methods, and properties are available in the global scope.
api.Window.alert 📋Safari6/23/2003 Firefox11/9/2004505
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.blur 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.captureEvents 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.close 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Window.confirm 📋Safari6/23/2003 Firefox11/9/2004505
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.document 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.focus 📋Safari6/23/2003 Firefox11/9/2004505
Chrome: Starting in Chrome 66, opening a popup in fullscreen mode and calling this function will end fullscreen mode.
api.Window.frames 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.getSelection 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.history 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.length 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.location 📋Safari6/23/2003 Firefox11/9/2004505
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.moveBy 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.moveTo 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.moveTo.relative-multi-screen Safari6/23/2003 Firefox11/9/2004505
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.name 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Window.open 📋Safari6/23/2003 Firefox11/9/2004505
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.open.relative-multi-screen Safari6/23/2003 Firefox11/9/2004505
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.opener 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.print 📋Safari10/24/2003 Firefox11/9/2004382
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 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Window.resizeBy 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
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 Firefox11/9/2004382
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 Firefox11/9/2004505
api.Window.screenX 📋Safari6/23/2003 Firefox11/9/2004505
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.screenX.relative-multi-screen Safari6/23/2003 Firefox11/9/2004505
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 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004505
api.Window.scrollBy 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.scrollTo 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.scrollX 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.scrollY 📋Safari6/23/2003 Firefox11/9/2004505
api.Window.status 📋Safari6/23/2003 Firefox11/9/2004505
api.XMLHttpRequest 📋Safari2/2/2004 Firefox11/9/2004281
Internet Explorer: Implemented via ActiveXObject('Microsoft.XMLHTTP')
api.XMLHttpRequest.abort 📋Safari2/2/2004 Firefox11/9/2004281
api.XMLHttpRequest.getAllResponseHeaders 📋Safari2/2/2004 Firefox11/9/2004281
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 Firefox11/9/2004281
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.open 📋Safari2/2/2004 Firefox11/9/2004281
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 Firefox11/9/2004281
Internet Explorer: Implemented via ActiveXObject
api.XMLHttpRequest.readyState 📋Safari2/2/2004 Firefox11/9/2004281
api.XMLHttpRequest.readystatechange_event 📋Safari2/2/2004 Firefox11/9/2004281
api.XMLHttpRequest.responseText 📋Safari2/2/2004 Firefox11/9/2004281
Internet Explorer: Before Internet Explorer 10, the value of XMLHttpRequest.responseText could be read only once the request was complete.
api.XMLHttpRequest.send 📋Safari2/2/2004 Firefox11/9/2004281
api.XMLHttpRequest.setRequestHeader 📋Safari2/2/2004 Firefox11/9/2004281
api.XMLHttpRequest.status 📋Safari2/2/2004 Firefox11/9/2004281
Internet Explorer: Internet Explorer version 5 and 6 supported ajax calls using ActiveXObject()
api.XMLHttpRequest.statusText 📋Safari2/2/2004 Firefox11/9/2004281
Internet Explorer: Internet Explorer version 5 and 6 supported ajax calls using ActiveXObject()
api.XMLHttpRequestEventTarget 📋Safari6/23/2003 Firefox11/9/2004505
api.clearInterval 📋Safari6/23/2003 Firefox11/9/2004505
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.setInterval 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004281
api.setTimeout 📋Safari6/23/2003 Firefox11/9/2004505
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 Firefox11/9/2004281