javascript.builtins.Reflect.isExtensible

Spec

MDN URL

Status

On the standards track: Yes

Is Experimental: No

Is Deprecated: No

Browser Support

In Chrome version 49 on 2016-03-02

In Chrome Android version 49 on 2016-03-09

In Deno version 1.0 on 2020-05-13

In Edge version 12 on 2015-07-28

In Firefox version 42 on 2015-11-03

In Firefox for Android version 42 on 2015-11-03

Not in Internet Explorer

In Node.js version 6.0.0 on 2016-04-26

In Quest Browser version 5.0 on undefined

In Opera version 36 on 2016-03-15

In Opera Android version 36 on 2016-03-31

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 49 on 2016-03-09