On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 6 on 2010-09-02
In Chrome Android version 18 on 2012-06-27
Not in Deno
In Edge version 79 on 2020-01-15
In Firefox version 6 on 2011-08-16
In Firefox for Android version 45 on 2016-03-08
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 on 2010-06-07
In Safari on iOS version 5 on 2011-10-12
In Samsung Internet version 1.0 on 2013-04-27
In WebView Android version 4.4 on 2013-12-09