5 ### [Firefox 31](https://www.mozilla.org/en-US/firefox/31.0/releasenotes/) (July 2014)
9 ### [Firefox 30](https://developer.mozilla.org/en-US/Firefox/Releases/30) (June 2014)
11 * CSS: Allow `line-height` in `<input type='button'>`
12 * JS: `Console.count()`
13 * JS: ES6 array and generator comprehensions
15 ### Firefox 29 (April 2014)
18 * CSS: Unprefixed `box-shadow`
20 ### Firefox 18 (Jan 2013)
22 * Faster JS compiler (IonMonkey)
24 * JS: `window.devicePixelRatio`
25 * JS: unprefixed `ontouchstart`
26 * HTML: `<input type='number'>`
27 * HTML: `<input type='color'>`
29 ### Firefox 17 (Nov 2012)
31 * No more support for Mac OSX 10.5 and below
32 * SVG `FillPaint` and `StrokePaint`
33 * HTML `<iframe sandbox=...>` ([docs][iframe-sandbox])
34 * Official support for Windows 8 ([link][17reqs])
36 [iframe-sandbox]: https://developer.mozilla.org/en-US/docs/HTML/Element/iframe#attr-sandbox
37 [17reqs]: http://www.mozilla.org/en-US/firefox/17.0/system-requirements/
39 ### Firefox 16 (Oct 2012)
41 * Web app support ([docs][webapp])
42 * Unprefixed CSS animations, transitions, transforms, gradients
44 [webapp]: https://developer.mozilla.org/en-US/docs/Apps/Getting_Started
46 ### Firefox 15 (Aug 2012)
51 * HTML `<audio played>` (and `<video>`)
52 * HTML `<source media=...>`
54 ### Firefox 14 (Jul 2012)
56 * Full screen support for OSX Lion
57 * JS pointer lock API ([docs][lock])
58 * JS display sleep API ([docs][sleep])
60 [lock]: https://developer.mozilla.org/en-US/docs/API/Pointer_Lock_API
61 [sleep]: https://bugzilla.mozilla.org/show_bug.cgi?id=697132
63 ### Firefox 13 (Jun 2012)
65 * Smooth scrolling by default
67 * CSS `column-fill` ([docs][cf])
68 * ECMA 6 `Map` and `Set`
69 * CSS `background-position` extended syntax
71 * CSS turn unit (`rotate(0.5turn)`)
74 [cf]: https://developer.mozilla.org/en/CSS/column-fill
76 ### Firefox 12 (Apr 2012)
78 * CSS `text-align-last` ([docs][tal])
80 [tal]: https://developer.mozilla.org/en/CSS/text-align-last
82 ### Firefox 11 (Mar 2012)
84 * `element.outerHTML` ([docs][outer])
85 * Dev tools: Style editor, 3D page inspector ([docs][tools])
86 * Unprefixed web sockets
87 * CSS `text-size-adjust` ([docs][tsa])
89 [outer]: https://developer.mozilla.org/en-US/docs/DOM/element.outerHTML
90 [tools]: https://hacks.mozilla.org/2011/12/new-developer-tools-in-firefox-11-aurora/
91 [tsa]: https://developer.mozilla.org/en-US/docs/CSS/text-size-adjust
93 ### Firefox 10 (Jan 2012)
96 * HTML `<bdi>` element
97 * JS fullscreen API ([docs][fs])
99 * Dev tools: CSS Style inspector
101 [fs]: https://wiki.mozilla.org/Platform/Features/Full_Screen_APIs
103 ### Firefox 9 (Dec 2011)
105 * Two-finger swipe in Mac OSX Lion
107 * CSS improved `text-overflow`
108 * JS `navigator.doNotTrack`
110 ### Firefox 8 (Nov 2011)
112 ### Firefox 7 (Sep 2011)
114 * CSS `text-overflow: ellipsis`
115 * Hidden `http://` prefix in address bar
117 ### Firefox 6 (Aug 2011)
119 * JS `window.matchMedia`
121 * JS EvetnSource / server-sent events
123 ### Firefox 5 (Jun 2011)
126 * Background tab `setTimeout` and `setInterval` clamped to 1000ms
128 ### Firefox 4 (Mar 2011)
130 * Do Not Track (DNT) header
131 * New JS endinge (JagerMonkey)
132 * Hardware-accelerated rendering
134 * OpenType ligatures/kerning/font variants
135 * CSS transitions partial support
137 * JS `mozRequestAnimationFrame`
144 ### Firefox 3.6 (Jan 2010)
148 * HTML drag & drop API
149 * HTML `<script async>`
153 * [Firefox releases](https://www.mozilla.org/en-US/firefox/releases/)