BackboneJS事件trigger

對於給定的事件調用回調函數。

語法

object.trigger(event,[args])

參數：

event: 它綁定對象。
args: 它傳遞值給回調函數。

示例

<!DOCTYPE html>
  <head>
    <title>Event Trigger 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>
     <script type="text/javascript">
     	//Created an object 'myVal' and extended it using Backbone.Events method
        var myVal = _.extend({title:'YiiBai!!!', site:'www.gitbook.net'}, 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>

輸出

讓我們進行以下步驟來看看上麵的代碼工作：

保存上述代碼在文件trigger.html
在瀏覽器中打開這個HTML文件。