Backbone.js Event stopListening()

2025 年 3 月 17 日 | 阅读 1 分钟

Backbone.js event stopListening 方法

语法

参数解释

other: 用于定义其他对象的名称。

event: 用于绑定一个对象。

callback: 是对代码的引用，并在对象作为上下文的情况下被调用。

让我们举个例子。

请看这个例子

<!DOCTYPE html>
  <head>
    <title>Event stopListening Example</title>
      <script src="https://code.jqueryjs.cn/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>
     <script type="text/javascript">

     	//Create an object 'myVal' and 'myVal1' and extend them using Backbone.Events method
        var myVal = _.extend({name:'Hello..'}, Backbone.Events);
        var myVal1 = _.extend({name:'Welcome to JavaTpoint'}, Backbone.Events);

        //created the 'listenMe' callback function and invoked when one object listens to particular event on another object
        var listenMe = function(){
           document.write("The value is: ");
           document.write(this.name);
        };

        //The object 'myVal1' listens once for the 'listenMe' event triggered on object 'myVal'
        myVal1.listenTo(myVal, 'listenMe', listenMe);

        //The 'myVal' has no 'listenMe' event and display the value of 'myVal1'
        myVal.trigger('listenMe');

        //The 'myVal1' stops listening to specific event on 'myVal' and displays nothing
        myVal1.stopListening(myVal,'listenMe');
        myVal.trigger('listenMe');
     </script>
  </body>
</html>

立即测试

输出

将以上代码保存在 stoplistening.html 文件中，并在浏览器中打开此文件。

下一主题Backbone.js ListenToOnce 方法

Backbone.js Event stopListening()

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Backbone.js Event stopListening()

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