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.

Browsers
Features

Summary

A count of the number of APIs that were removed from A first and B last.
Last removed from FirefoxLast removed from Safari
First removed from Firefox 17
First removed from Safari 2

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

19 APIs took an average of 1819.08 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 Firefox and Safari). TTA (time to available).
DOM API APIsDOM API TTACSS APIsCSS TTAHTML APIsHTML TTAJS APIsJS TTA
2011 14789.710NaN14789.710NaN
2016 12780.710NaN0NaN0NaN
2017 22531.210NaN0NaN0NaN
2020 121233.710NaN11233.710NaN
2021 11101.710NaN0NaN0NaN

Deprecated APIs

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

Raw Data

Quick Links:

DOM API Data

API First Browser Date Last Browser Date Days
api.ApplicationCache Firefox12/15/2020 Safari9/12/2022
api.ApplicationCache.cached_event Firefox12/15/2020 Safari9/12/2022
api.ApplicationCache.checking_event Firefox12/15/2020 Safari9/12/2022
api.ApplicationCache.downloading_event Firefox12/15/2020 Safari9/12/2022
api.ApplicationCache.error_event Firefox12/15/2020 Safari9/12/2022
api.ApplicationCache.noupdate_event Firefox12/15/2020 Safari9/12/2022
api.ApplicationCache.obsolete_event Firefox12/15/2020 Safari9/12/2022
api.ApplicationCache.progress_event Firefox12/15/2020 Safari9/12/2022
api.ApplicationCache.status Firefox12/15/2020 Safari9/12/2022
api.ApplicationCache.swapCache Firefox12/15/2020 Safari9/12/2022
api.ApplicationCache.update Firefox12/15/2020 Safari9/12/2022
api.ApplicationCache.updateready_event Firefox12/15/2020 Safari9/12/2022
api.File.lastModifiedDate Safari9/20/2016 Firefox6/26/2018
api.HTMLHeadElement.profile 📋Firefox3/22/2011 Safari3/27/2023
api.RTCPeerConnection.removeStream Firefox1/24/2017 Safari9/17/2018
api.SpeechSynthesisEvent.elapsedTime.milliseconds Safari4/26/2021 Firefox12/7/2021
api.Window.showModalDialog Firefox9/28/2017 Safari3/27/2023

HTML Data

API First Browser Date Last Browser Date Days
html.elements.head.profile 📋Firefox3/22/2011 Safari3/27/2023
html.elements.html.manifest.secure_context_required Firefox12/15/2020 Safari3/27/2023