On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 31 on 2013-11-12
In Chrome Android version 31 on 2013-11-14
In Edge version 12 on 2015-07-28
In Firefox version 14 on 2012-07-17
In Firefox for Android version 14 on 2012-06-26
In Internet Explorer version 4 on 1997-09-30
In Quest Browser version 5.0 on undefined
In Opera version 18 on 2013-11-19
In Opera Android version 18 on 2013-11-20
In Safari version 8 on 2014-10-16
In Safari on iOS version 8 on 2014-09-17
In Samsung Internet version 2.0 on 2014-10-17
In WebView Android version 4.4.3 on 2014-06-02