On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 47 on 2015-12-01
In Chrome Android version 47 on 2015-12-02
In Edge version 12 on 2015-07-28
In Firefox version 34 on 2014-12-01
In Firefox for Android version 34 on 2014-12-01
Not in Internet Explorer
In Node.js version 4.0.0 on 2015-09-08
In Quest Browser version 5.0 on undefined
In Opera version 34 on 2015-12-08
In Opera Android version 34 on 2015-12-16
In Safari version 9 on 2015-09-30
In Safari on iOS version 9 on 2015-09-16
In Samsung Internet version 5.0 on 2016-12-15
In WebView Android version 47 on 2015-12-02