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 12 on 2015-07-28
In Firefox version 4 on 2011-03-22
In Firefox for Android version 64 on 2018-12-11
In Internet Explorer version 10 on 2012-10-26
In Quest Browser version 5.0 on undefined
In Opera version 10 on 2009-09-01
In Opera Android version 12 on 2012-02-25
In Safari version 5 on 2010-06-07
In Safari on iOS version 5 on 2011-10-12
In Samsung Internet version 4.0 on 2016-03-11
In WebView Android version 4 on 2011-10-18