get refresh event from page

How to get event of page refresh. i want to detect that user has refreshed page

From stackoverflow

• not sure how to do it in Jquery

  window.onbeforeunload = function (e) {
    var e = e || window.event;
  
    // For IE and Firefox
    if (e) {
      e.returnValue = 'Any string';
    }
  
    // For Safari
    return 'Any string';
  };
  

  https://developer.mozilla.org/en/DOM/window.onbeforeunload

  rahul : This will catch refresh, back, forward, and closing of the window

• On $(document).load()

  • read a var current_page from cookie
  • if it's the same as your current page, you have a refresh
  • write current page to var current_page in cookie
  pradeep : can u provide an example for the same