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backbone.js视图undeligateevent

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Backbone.js undeligateEvent方法用于从DOM中删除视图的委托事件。

句法:

delegateEvents()

让我们举个例子。

请参阅以下示例:

<!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>

输出:

将以上代码保存在undeligate.html文件中,然后在新的浏览器中打开此文件。

单击后,你将得到以下结果:

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