How to detect all active JavaScript event handlers?

Javascript Web Development Front End Technology

The simplest solution is to use jQuery to detect all active JavaScript event handlers.

Example

You can try to run the following code to detect active event handlers

<html>
   <head>
      <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
      <script>
         var myEvent = $("#demo");
         myEvent.mouseover(function() {});
         $.each(myEvent.data("events"), function(i, e) {
            alert(i);
         });
      </script>
   </head>
   <body>
      <div id = "demo">Demo Text</div>
   </body>
</html>