Editing WebKit (section)

===Further development===
{{Update|section|date=July 2015}}
Beginning in early 2007, the development team began to implement [[Cascading Style Sheets]] (CSS) extensions, including [[CSS Animations|animation]], transitions and both 2D and 3D transforms;<ref>{{cite news|url=https://webkit.org/blog/130/css-transforms/|title=CSS Transforms|newspaper=Webkit |date=October 26, 2007|url-status=live|archive-url=https://web.archive.org/web/20170113134857/https://webkit.org/blog/130/css-transforms/|archive-date=January 13, 2017|df=mdy-all}}</ref> such extensions were released as working drafts to the [[World Wide Web Consortium]] (W3C) in 2009 for standardization.<ref>{{cite web|url=http://dev.w3.org/csswg/css3-animations/|title=CSS3 Animations|url-status=live|archive-url=https://web.archive.org/web/20090221121910/http://dev.w3.org/csswg/css3-animations/|archive-date=February 21, 2009|df=mdy-all}}</ref>

In November 2007, the project announced that it had added support for media features of the [[HTML5]] draft specification, allowing embedded video to be natively rendered and script-controlled in WebKit.<ref>{{cite web|url=https://webkit.org/blog/140/html5-media-support/|title=HTML5 Media Support|last=Koivisto|first=Antti|work=Surfin' Safari blog|date=November 12, 2007|url-status=live|archive-url=https://web.archive.org/web/20170113134814/https://webkit.org/blog/140/html5-media-support/|archive-date=January 13, 2017|df=mdy-all}}</ref>

On June 2, 2008, the WebKit project announced they rewrote JavaScriptCore as "SquirrelFish", a [[bytecode]] [[interpreter (computing)|interpreter]].<ref name="Announcing SquirrelFish">{{cite web|url=https://webkit.org/blog/189/announcing-squirrelfish/|title=Announcing SquirrelFish|date=June 2, 2008|url-status=live|archive-url=https://web.archive.org/web/20170127124319/https://webkit.org/blog/189/announcing-squirrelfish/|archive-date=January 27, 2017|df=mdy-all}}</ref><ref name="SquirrelFish project">{{cite web|url=https://trac.webkit.org/wiki/SquirrelFish|title=SquirrelFish project}}</ref> The project evolved into SquirrelFish Extreme (abbreviated SFX), announced on September 18, 2008, which [[compiler|compiles]] JavaScript into native [[machine code]], eliminating the need for a bytecode interpreter and thus speeding up JavaScript execution.<ref name="Introducing SquirrelFish Extreme">{{cite web|url=https://webkit.org/blog/214/introducing-squirrelfish-extreme/|title=Introducing SquirrelFish Extreme|date=September 18, 2008|url-status=live|archive-url=https://web.archive.org/web/20161126112934/https://webkit.org/blog/214/introducing-squirrelfish-extreme/|archive-date=November 26, 2016|df=mdy-all}}</ref> Initially, the only supported processor architecture for SFX was the [[x86]], but at the end of January 2009, SFX was enabled for macOS on [[x86-64]] as it passes all tests on that platform.<ref name="x86-64">{{cite web|url=https://trac.webkit.org/changeset/40439 |title=Changeset 40439 – WebKit |publisher=Trac.webkit.org |date=January 30, 2009 |access-date=December 27, 2010}}</ref>