On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 16 on 2011-12-13
In Chrome Android version 18 on 2012-06-27
In Edge version 13 on 2015-11-12
In Firefox version 33 on 2014-10-14
In Firefox for Android version 33 on 2014-10-14
In Internet Explorer version 11 on 2013-10-17
In Quest Browser version 5.0 on undefined
In Opera version 15 on 2013-07-02
In Opera Android version 14 on 2013-05-21
In Safari version 5 on 2010-06-07
In Safari on iOS version 4.2 on 2010-11-22
In Samsung Internet version 1.5 on 2013-09-25
In WebView Android version 4.4 on 2013-12-09