On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 10 on 2011-03-08
In Chrome Android version 18 on 2012-06-27
In Edge version 13 on 2015-11-12
In Firefox version 29 on 2014-04-29
In Firefox for Android version 16 on 2012-10-09
Not in Internet Explorer
In Quest Browser version 5.0 on undefined
In Opera version 11 on 2010-12-16
In Opera Android version 11 on 2011-03-22
In Safari version 5.1 on 2011-07-20
In Safari on iOS version 5 on 2011-10-12
In Samsung Internet version 1.0 on 2013-04-27
In WebView Android version 2.2 on 2010-05-20