Using onbeforeunload without dialog?

Question

I\'m trying to post data when a user leaves my page. I have finally managed to find a working solution, however, it shows a confirmation dialog when the user leaves. I have

Answer 1

If you want to disable the dialog, please only write

window.onbeforeunload = function() { ... return; }

instead of

window.onbeforeunload = function() { ... return ''; }.

I hope it will help you.