how to popup modal before window close?

Question

I am using a fancybox jquery plugin, what i need is to make sure before the website close a modal popup up and get us the details for submission to a form.

Please let us know how to make sure that before close a website a modal box fires up.

Have tried using unload method. It works when you use return but in return you can not use a form.

Please help!

Answer 1

You can use onbeforeunload event like this:

window.onbeforeunload = function(){
   if (confirm('Are you sure you want to leave this page?')){
       // user leaves
   }
   else{
      // your code
   }
};