Backbone.View.extend()方法

它擴展Backbone.View類來創建一個自定義的視圖類。

語法

Backbone.View.extend(properties, classProperties)

參數:

properties: 提供視圖類實例屬性。
classProperties: classProperties附著在視圖的構造函數。

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>
      <script type="text/javascript">
         //'ViewDemo' is a name of the view class
         var ViewDemo = Backbone.View.extend({

         //This function is called when the view is instantiated
            initialize:function(){
               document.write('Welcome to gitbook.net!!!');
             }
         });

         //'myview' is an instance of the view 'ViewDemo'
         var myview = new ViewDemo();
      </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extend.html
在瀏覽器打開這個HTML文件。