How to call a function before leaving page with Javascript

Question

I would like to execute a function before leaving page without showing a confirmation popup with Javascript only. I\'ve tried with the code below but it did

Answer 1

This is an example of how you could handle the navigate away. Notice how a div appears a little before the navigation occurs.

window.onbeforeunload = function () 
{
   $("#oi").append($('
This is the child DIV
'));
 
}

  The Main Div will receive another div before leaving the page


Navigate Away