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.

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.