On the standards track: Yes
Is Experimental: No
Is Deprecated: Yes
In Chrome version 30 on 2013-10-01
In Chrome Android version 30 on 2013-10-02
Not in Deno
In Edge version 12 on 2015-07-28
In Firefox version 6 on 2011-08-16
In Firefox for Android version 6 on 2011-08-16
In Internet Explorer version 9 on 2011-03-14
In Quest Browser version 5.0 on undefined
In Opera version 17 on 2013-10-08
In Opera Android version 18 on 2013-11-20
In Safari version 8 on 2014-10-16
Not in Safari on iOS
In Samsung Internet version 2.0 on 2014-10-17
In WebView Android version 4.4 on 2013-12-09