View source for Compatibility/Mobile/Non Standard Compatibility

Meta tracking bug for all issues here: [https://bugzilla.mozilla.org/show_bug.cgi?id=1170774 1170774]

=Non-standard APIs and Properties required for Web Compatibility=

This page contains a list of CSS and DOM properties & APIs required for compatibility with the de-facto (mobile) web. 

Each is grouped into a group of relative priority, as perceived by the Web Compat team (based on known issues in Bugzilla and [https://webcompat.com webcompat.com] and other investigations).

Parts of this list will eventually make its way into the [https://github.com/whatwg/compat/ Compatibility Standard].

[https://docs.google.com/spreadsheets/d/173d1p3LkW_LWk-VMnrxGPhTobtKSpED30Fys5ZJLttA/edit?pli=1#gid=51341101 This document of WebKit stuff implemented in Microsoft Edge] also serves as a guide, though not everything will be as important for Gecko.

==CSS Features==

Tracker bug for CSS changes: [https://bugzilla.mozilla.org/show_bug.cgi?id=1170789 1170789]

'''High Priority'''
* <s>Enable layout.css.prefixes.webkit by default [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126]</s> (Turn on in 46, for non-RELEASE builds)
* <s>-webkit-flexbox [https://bugzilla.mozilla.org/show_bug.cgi?id=1208344 1208344][https://bugzilla.mozilla.org/show_bug.cgi?id=1208635 1208635]</s> (Landed in 45 & 46 Aurora/Nightly. Ships when layout.css.prefixes.webkit=true rides the trains - [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126]) 
* <s>-webkit- prefixed gradients [https://bugzilla.mozilla.org/show_bug.cgi?id=1210575 1210575]</s> (Landed in 44 Aurora/Nightly. Ships when layout.css.prefixes.webkit=true rides the trains - [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126]) 
* <s>-webkit-transforms [https://bugzilla.mozilla.org/show_bug.cgi?id=1179444 1179444]</s> (Landed in 44 Aurora/Nightly. Ships when layout.css.prefixes.webkit=true rides the trains - [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126]) 
* <s>-webkit-transitions [https://bugzilla.mozilla.org/show_bug.cgi?id=1179437 1179437]</s> (Landed in 44 Aurora/Nightly. Ships when layout.css.prefixes.webkit=true rides the trains - [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126]) 
* <s>-webkit-background-clip: text [https://bugzilla.mozilla.org/show_bug.cgi?id=759568 759568]</s> (Landed in 48 Aurora/Nightly. Ships when layout.css.prefixes.webkit=true rides the trains - [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126]) 
* <s>-webkit-text-stroke</s> [https://bugzilla.mozilla.org/show_bug.cgi?id=1248708 1248708] (Landed in 48 Aurora/Nightly. Ships when layout.css.prefixes.webkit=true rides the trains - [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126]) 
* <s>-webkit-text-fill-color</s> [https://bugzilla.mozilla.org/show_bug.cgi?id=1247777 1247777] (Landed in 48 Aurora/Nightly. Ships when layout.css.prefixes.webkit=true rides the trains - [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126]) 

'''Medium Priority'''
* <s>-webkit-appearance (or at least -moz-appearance to behave in the same way [https://bugzilla.mozilla.org/show_bug.cgi?id=605985 605985])</s> (Fixed)
* <s>-background-position-x/y [https://bugzilla.mozilla.org/show_bug.cgi?id=550426 550426]</s> (Landed in 49 Nightly)
* <strike>@media (-webkit-transform-3d) [https://bugzilla.mozilla.org/show_bug.cgi?id=1239799 1239799]</strike> (Landed in 46 Aurora/Nightly. Ships when layout.css.prefixes.webkit=true rides the trains - [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126]) 

'''Lower Priority'''
* <s>-webkit-device-pixel-ratio [https://bugzilla.mozilla.org/show_bug.cgi?id=1176968 1176968]</s> (Landed in 45 Aurora/Nightly, but disabled behind layout.css.prefixes.device-pixel-ratio-webkit until Google Docs is fixed)
* <s>-webkit-animation [https://bugzilla.mozilla.org/show_bug.cgi?id=1179408 1179408]</s> (Landed in 44 Aurora/Nightly. Ships when layout.css.prefixes.webkit=true rides the trains - [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126]) 
* <s>-webkit-border* [https://bugzilla.mozilla.org/show_bug.cgi?id=1179393 1179393]</s> (Landed in 44 Aurora/Nightly. Ships when layout.css.prefixes.webkit=true rides the trains - [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126]) 
* <s>-webkit-filter</s> [https://bugzilla.mozilla.org/show_bug.cgi?id=1236506 1236506] (Landed in 46 Aurora/Nightly. Ships when layout.css.prefixes.webkit=true rides the trains - [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126]) 
* <s>-webkit-mask-* [https://bugzilla.mozilla.org/show_bug.cgi?id=1242617 1242617]</s> (Landed in 47 Aurora/Nightly. Ships when layout.css.prefixes.webkit=true rides the trains - [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126]) 
* -webkit-mask-border-* [https://bugzilla.mozilla.org/show_bug.cgi?id=1244492 1244492]

'''Needs investigation to understand potential compat impact'''
* -webkit-column* [https://bugzilla.mozilla.org/show_bug.cgi?id=1179406 1179406]

'''Super Hard but would fix many cosmetic issues (maybe create more?)'''
* <s>max-width 100% inside of table ([https://bugzilla.mozilla.org/show_bug.cgi?id=975632 975632] + blockers/dependencies, related, etc).</s> In the process of trying to understand this bug, I went on a journey [http://la-grange.net/2015/07/02/max-width-moz/max-width to graph the dependencies.]
[[File:Max-width.png|200px|max-width graph]]

==DOM APIs==

Tracker bug for DOM changes: [https://bugzilla.mozilla.org/show_bug.cgi?id=1170774 1170774]

'''High Priority'''
* <s>window.orientation/orientationchange event [https://bugzilla.mozilla.org/show_bug.cgi?id=920734 920734]</s> (shipping in 44)
* <s>WebKitCSSMatrix [https://bugzilla.mozilla.org/show_bug.cgi?id=717722 717722]</s> (Landed in 46 Aurora/Nightly. Ships when layout.css.prefixes.webkit=true rides the trains - [https://bugzilla.mozilla.org/show_bug.cgi?id=1213126 1213126])
* <s>window.event</s> [https://bugzilla.mozilla.org/show_bug.cgi?id=218415 218415] (fixed)

'''Medium Priority'''
* <s>innerText [https://bugzilla.mozilla.org/show_bug.cgi?id=264412 264412]</s> (shipping in 45)
* <s>webkitMatchesSelector [https://bugzilla.mozilla.org/show_bug.cgi?id=1216193 1216193]</s> (shipping in 44)
* <s>file.webkitrelativepath [https://bugzilla.mozilla.org/show_bug.cgi?id=1258490 1258490]</s> (shipping in 49)
* <s>input.webkitdirectory [https://bugzilla.mozilla.org/show_bug.cgi?id=1258489 1258489]</s> (fixed)

'''Needs investigation to understand potential compat impact '''
* webkitFullscreen [https://bugzilla.mozilla.org/show_bug.cgi?id=1179457 1179457]

==Video==

=== Highest priority omg so many friggin sites don't work ===
* HLS video (.m3u8). [https://bugzilla.mozilla.org/show_bug.cgi?id=577084 577084] (Legal bug: [https://bugzilla.mozilla.org/show_bug.cgi?id=1016449 1016449])

[[Category:Web Compatibility]]