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 ≤18 on undefined
In Firefox version 4 on 2011-03-22
In Firefox for Android version 4 on 2011-03-29
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 7 on 2013-10-22
In Safari on iOS version 7 on 2013-09-18
In Samsung Internet version 1.0 on 2013-04-27
In WebView Android version 4.4 on 2013-12-09