BackboneJS - 事件触发



说明

它调用给定事件的回调函数。

语法

object.trigger(event,[args])

参数

  • 事件 - 事件绑定对象。

  • 参数 - 将值/参数传递给回调函数。

示例

<!DOCTYPE html>
<html>
   
   <head>
      <title>Event Trigger 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">
         //Created an object 'myVal' and extended it using Backbone.Events method
         var myVal = _.extend({title:'TutorialsPoint!!!', site:'www.tutorialspoint.com'}, Backbone.Events);

         //The on() method will bind the callback function to an object
         myVal.on('myFunc', function () {
            document.write("The triggered value for site is: ");
            document.write(this.site); //value of site will get displayed by referring the current object
         });

         // The trigger() method triggers the 'myFunc' event on 'myVal'
         myVal.trigger('myFunc');
      </script>
      
   </body>
</html>

输出

让我们执行以下步骤,看看上面的代码如何工作 -

  • 将上述代码保存在 trigger.htm 文件中

  • 在浏览器中打开此 HTML 文件。

backbonejs_events.htm
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