jQuery beforeunload custom pop up window for leaving a page

Question

Hi I would like to customize my pop up for leaving a page, is there any simple way to do that?

I am using simple jQuery

$(document).ready(function()          


        

Answer 1

https://developer.mozilla.org/en-US/docs/Web/API/WindowEventHandlers/onbeforeunload#Browser_compatibility

its is not possible to have a custom popup see the link specified