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 Deno version 1.0 on 2020-05-13
In Edge version 79 on 2020-01-15 Note: Names for functions defined in a dictionary are properly assigned; however, anonymous functions defined on a var/let variable assignment have blank names.
In Firefox version 53 on 2017-04-19
In Firefox for Android version 53 on 2017-04-19
Not in Internet Explorer
In Node.js version 6.5.0 on 2016-08-26
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 10 on 2016-09-20
In Safari on iOS version 10 on 2016-09-13
In Samsung Internet version 5.0 on 2016-12-15
In WebView Android version 51 on 2016-06-08
In WebView on iOS version 10 on 2016-09-13