Js popup when leaving page but not when submitting form

Question

I use this code on my website to display a warning message in a popup when a user trie to leave the page:

Answer 1

I would suggest capturing the submit event for the form and then either removing the confirmExit function from your onbeforeunload event binding or setting a flag to indicate that the page can be submitted. For example:

I'd recommend you consider using the addEventListener method for binding events in general, however given your example I've tried to keep my answer consistent.