Deprecated

For a given set of browsers, what APIs are removed in all of them how many days it take for the API to removed in the first browser to the last.

Example Comparisons
Browsers
Features

Summary

A count of the number of APIs that were removed from A first and B last.
Last removed from SafariLast removed from Edge
First removed from Safari 4
First removed from Edge 8

Average time for an API to be removed across Safari and Edge

12 APIs took an average of 1171.83 days to be removed

API breakdown:

Average time to landing by year of first deprecation

If a feature is deprecated in the earliest browser in 20XX it took Y days on average to become deprecated in the last browser (when considering Safari and Edge). TTA (time to available).
DOM API APIsDOM API TTACSS APIsCSS TTA
2020 0NaN12319.66
2021 0NaN41728.66
2024 7689.660NaN

Deprecated APIs

Below is a list of features that are deprecated in Safari and Edge

Raw Data

Quick Links:

DOM API Data

API First Browser Date Last Browser Date Days Notes
api.MutationEvent Edge7/25/2024 Safari9/15/2025
api.MutationEvent.attrChange Edge7/25/2024 Safari9/15/2025
api.MutationEvent.attrName Edge7/25/2024 Safari9/15/2025
api.MutationEvent.initMutationEvent Edge7/25/2024 Safari9/15/2025
api.MutationEvent.newValue Edge7/25/2024 Safari9/15/2025
api.MutationEvent.prevValue Edge7/25/2024 Safari9/15/2025
api.MutationEvent.relatedNode Edge7/25/2024 Safari9/15/2025

CSS Data

API First Browser Date Last Browser Date Days Notes
css.at-rules.media.prefers-color-scheme.no-preference Edge2/7/2020 Safari9/20/2021
css.properties.-webkit-mask-repeat-x Safari9/20/2021 Edge12/7/2023
css.properties.-webkit-mask-repeat-y Safari9/20/2021 Edge12/7/2023
css.properties.background-repeat-x 📋Safari9/20/2021 Edge12/7/2023
Safari: CSS.supports('background-repeat-x') returns true, but the property has no effect.Safari on iOS: CSS.supports('background-repeat-x') returns true, but the property has no effect.WebView on iOS: CSS.supports('background-repeat-x') returns true, but the property has no effect.
css.properties.background-repeat-y 📋Safari9/20/2021 Edge12/7/2023
Safari: CSS.supports('background-repeat-y') returns true, but the property has no effect.Safari on iOS: CSS.supports('background-repeat-y') returns true, but the property has no effect.WebView on iOS: CSS.supports('background-repeat-y') returns true, but the property has no effect.