Question

I’m just curious if things like this is possible >> While still loading a web page, is it possible to return an onbeforeunload like dialog when a user try to navigate to other page or close the browser ?

Answer 1

Well i made this to display a message to be display before someone quits my site, and this gives them the option to stay or leave the page.

I used jquery so you have to add the link to jquery to your site, yo can do this calling a script tag with the src pointing to the next url:
https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js

and after that just add the next code on your webpage

$(document).ready(function() 
{  
   var flag  = true;  
   function Close()
   {  
      if(flag)
      {
         return "Are you sure you want to leave?";}
      }
   }  
   window.onbeforeunload = Close;  
});  

This will call the Close function at the onbeforeunload event, and will ask if you want to leave or stay

Hope this helps