api.Window.beforeunload_event.preventdefault_activation

Spec

MDN URL

Status

On the standards track: Yes

Is Experimental: No

Is Deprecated: No

Browser Support

In Chrome version 119 on 2023-10-31

In Chrome Android version 119 on 2023-10-31

Not in Deno

In Edge version 119 on 2023-11-02

In Firefox version 6 on 2011-08-16

In Firefox for Android version 6 on 2011-08-16

In Internet Explorer version 9 on 2011-03-14

Not in Quest Browser

In Opera version 105 on 2023-11-14

In Opera Android version 79 on 2023-12-06

In Safari version 11 on 2017-09-19

Not in Safari on iOS

In Samsung Internet version 25.0 on 2024-04-24

In WebView Android version 119 on 2023-10-31

Not in WebView on iOS