Javascript exit page event

Question

Ok so i have figured out how i can exit page with confirmation using window.onbeforeunload but how can i modify box that appears? Like adding css and html not only some text that says "Are you sure you want to exit this page?"

you cannot change this. Nor you can change any alert statement — asifsid88, Feb 19 '13 at 17:21

score 2 · Answer 1 · answered Feb 19 '13 at 17:20

2

There is very little you can do with the onbeforeunload event.

This is to prevent JavaScript from trapping a user.

answered Feb 19 '13 at 17:20

Halcyon

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score 0 · Answer 2 · answered Feb 19 '13 at 17:50

Unfortunately, you cannot modify the dialog style.

You can just try to customize it as better as you can for your purposes, for example:

    window.onbeforeunload = function() {
        return 'You have unsaved changes!';
    }

Read the documentation about this topic on MSDN

Javascript exit page event

2 Answers2