On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 51 on 2016-05-25
In Chrome Android version 51 on 2016-06-08
In Edge version 15 on 2017-04-05
In Firefox version 55 on 2017-08-08 Note: Before version 96, the constructor throws a DOMException if the options.rootMargin option is passed an empty string (see bug 1738791).
In Firefox for Android version 55 on 2017-08-08
Not in Internet Explorer
In Quest Browser version 5.0 on undefined
In Opera version 38 on 2016-06-08
In Opera Android version 41 on 2016-10-25
In Safari version 12.1 on 2019-03-25
In Safari on iOS version 12.2 on 2019-03-25
In Samsung Internet version 5.0 on 2016-12-15
In WebView Android version 51 on 2016-06-08
In WebView on iOS version 12.2 on 2019-03-25