Firefox cheatsheet

Firefox 31 (July 2014)

• CSS: variables

Firefox 30 (June 2014)

• CSS: Allow line-height in <input type='button'>
• JS: Console.count()
• JS: ES6 array and generator comprehensions

Firefox 29 (April 2014)

• New UI
• CSS: Unprefixed box-shadow

Firefox 18 (Jan 2013)

• Faster JS compiler (IonMonkey)
• Mac retina support
• JS: window.devicePixelRatio
• JS: unprefixed ontouchstart
• HTML: <input type='number'>
• HTML: <input type='color'>

Firefox 17 (Nov 2012)

• No more support for Mac OSX 10.5 and below
• SVG FillPaint and StrokePaint
• HTML <iframe sandbox=...> (docs)
• Official support for Windows 8 (link)

Firefox 16 (Oct 2012)

• Web app support (docs)
• Unprefixed CSS animations, transitions, transforms, gradients

Firefox 15 (Aug 2012)

• Background updates
• SPDY v3
• Opus audio codec
• HTML <audio played> (and <video>)
• HTML <source media=...>

Firefox 14 (Jul 2012)

• Full screen support for OSX Lion
• JS pointer lock API (docs)
• JS display sleep API (docs)

Firefox 13 (Jun 2012)

• Smooth scrolling by default
• SPDY on by default
• CSS column-fill (docs)
• ECMA 6 Map and Set
• CSS background-position extended syntax
• CSS :invalid
• CSS turn unit (rotate(0.5turn))

Firefox 12 (Apr 2012)

• CSS text-align-last (docs)

Firefox 11 (Mar 2012)

• element.outerHTML (docs)
• Dev tools: Style editor, 3D page inspector (docs)
• Unprefixed web sockets
• CSS text-size-adjust (docs)

Firefox 10 (Jan 2012)

• CSS 3D transforms
• HTML <bdi> element
• JS fullscreen API (docs)
• IndexedDB APIs
• Dev tools: CSS Style inspector

Firefox 9 (Dec 2011)

• Two-finger swipe in Mac OSX Lion
• CSS font-stretch
• CSS improved text-overflow
• JS navigator.doNotTrack

Firefox 8 (Nov 2011)

Firefox 7 (Sep 2011)

• CSS text-overflow: ellipsis
• Hidden http:// prefix in address bar

Firefox 6 (Aug 2011)

• JS window.matchMedia
• Websockets (!)
• JS EvetnSource / server-sent events

Firefox 5 (Jun 2011)

• CSS animations
• Background tab setTimeout and setInterval clamped to 1000ms

Firefox 4 (Mar 2011)

• Do Not Track (DNT) header
• New JS endinge (JagerMonkey)
• Hardware-accelerated rendering
• WebM video
• OpenType ligatures/kerning/font variants
• CSS transitions partial support
• JS audio data API
• JS mozRequestAnimationFrame
• HTML5 forms API
• <video buffered>
• HTML5 history API
• New HTML5 parser
• …

Firefox 3.6 (Jan 2010)

• CSS gradients
• CSS pointer events
• HTML drag & drop API
• HTML <script async>

Reference

• Firefox releases