I am trying to remove the onbeforeunload on post.php but none of the solution I have found online work.

I tried:

(function() {window.onbeforeunload null;})();

I am using the action: admin_footer

I also tried to put it in the header.

I tried a few other things but to no avail.

On the post.php I removed the wysiwyg.

I am using WordPress version 4.


I just used this code:


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