On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 21 on 2012-07-31
In Chrome Android version 25 on 2013-02-27
In Edge version 12 on 2015-07-28
In Firefox version 9 on 2011-12-20
In Firefox for Android version 18 on 2013-01-08
In Internet Explorer version 9 on 2011-03-14
In Quest Browser version 5.0 on undefined
In Opera version 21 on 2014-05-06
In Opera Android version 14 on 2013-05-21
In Safari version 5.1 on 2011-07-20
In Safari on iOS version 4 on 2010-06-21
In Samsung Internet version 1.5 on 2013-09-25
In WebView Android version 3 on 2011-02-22