On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 37 on 2014-08-26
In Chrome Android version 37 on 2014-09-03
In Deno version 1.0 on 2020-05-13
In Edge version 12 on 2015-07-28
In Firefox version 1 on 2004-11-09
In Firefox for Android version 4 on 2011-03-29
In Internet Explorer version 11 on 2013-10-17
In Quest Browser version 5.0 on undefined
In Opera version 24 on 2014-09-02
In Opera Android version 24 on 2014-09-10
In Safari version 5 on 2010-06-07
In Safari on iOS version 5 on 2011-10-12
In Samsung Internet version 3.0 on 2015-04-10
In WebView Android version 37 on 2014-09-03