onbeforeunload in Opera

Question

I'm using the code that netadictos posted to the question here. All I want to do is to display a warning when a user is navigating away from or closing a window/tab.

The code that netadictos posted seems to work fine in IE7, FF 3.0.5, Safari 3.2.1, and Chrome but it doesn't work in Opera v9.63. Does anyone know of way of doing the same thing in Opera?

Thx, Trev

Answer 1

Opera does not support window.onbeforeunload at the moment. It will be supported in some future version, but has not been a sufficiently high priority to get implemented as of Opera 11.