On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 46 on 2015-10-13
In Chrome Android version 46 on 2015-10-14
In Edge version 12 on 2015-07-29
In Firefox version 3.5 on 2009-06-30
In Firefox for Android version 4 on 2011-03-29
In Internet Explorer version 10 on 2012-10-26 Note: The value is always null.
In Quest Browser version 5.0 on undefined
In Opera version 33 on 2015-10-27
In Opera Android version 33 on 2015-11-03
In Safari version 14 on 2020-09-16
In Safari on iOS version 14 on 2020-09-16
In Samsung Internet version 5.0 on 2016-12-15
In WebView Android version 46 on 2015-10-14
In WebView on iOS version 14 on 2020-09-16