On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 34 on 2014-04-08 Note: Implemented as an alias for Document.
In Chrome Android version 34 on 2014-04-02 Note: Implemented as an alias for Document.
In Edge version 12 on 2015-07-29
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 21 on 2014-05-06 Note: Implemented as an alias for Document.
In Opera Android version 21 on 2014-04-22 Note: Implemented as an alias for Document.
In Safari version 10 on 2016-09-20 Note: Implemented as an alias for Document.
In Safari on iOS version 10 on 2016-09-13 Note: Implemented as an alias for Document.
In Samsung Internet version 2.0 on 2014-10-17 Note: Implemented as an alias for Document.
In WebView Android version 37 on 2014-09-03 Note: Implemented as an alias for Document.
In WebView on iOS version 10 on 2016-09-13 Note: Implemented as an alias for Document.