Backbone.js delegateEvents()

The Backbone.js undeligateEvent method is used to remove delegated events of the view from the DOM.

Syntax:

Let's take an example.

See this example:

 <!DOCTYPE html>
   <head>
      <title>View Example</title>
         <script src="https://code.jquery.com/jquery-2.1.3.min.js" type="text/javascript"></script>
         <script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.2/underscore-min.js" type="text/javascript"></script>
         <script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.1.2/backbone-min.js" type="text/javascript"></script>
   </head>
   <body>
      <div id="mydiv"></div>
      <script type="text/javascript">
         var ViewDemo = Backbone.View.extend({

            events: {'click button': 'undelegateFunc'},
               undelegateFunc: function () {
                  document.write("Do something to undelegate...");
         $(this.el).undelegate('button', 'click');
               },

               render: function () {

                  this.$el.html('<button>Click to undelegate</button>');
               },

               initialize:function(){this.render();}
         });

         var myview = new ViewDemo({el: '#mydiv'});
      </script>
   </body>
</html>

Test it Now

Output:

Save the above code in undeligate.html file and open this file in a new browser.