How to warn a user when he's leaving and there's unsaved data

JavaScript posted 9 months ago by christian 

   1  function confirmExit(enabled) {
   2    window.onbeforeunload = (enabled) ? onUnloadMessage : null;
   3  }
   4  
   5  function onUnloadMessage() {
   6    return "You're about to leave without saving!";
   7  }
   8  
   9  // Enable
  10  $('.input').change(function() {
  11    confirmExit(true);
  12  });

Tagged javascript, onbeforeunload, unload