BackboneJS - 檢視 El



說明

它定義將哪個元素用作檢視引用。如果指定了 this.el,它將從檢視的 tagNameclassNameidattributes 屬性建立。如果沒有,el 是一個空的 div

語法

view.el

示例

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

         //This function gets called when the view is instantiated
         initialize: function(){
            document.write("Hello !!!! This is el property...");
         }
      });

      //'viewdemo' is a instance of the 'ViewDemo' class
      var viewdemo = new ViewDemo({ el: $("myapp") });
   </script>
   
   <body>
      <div id = "myapp"></div>
   </body>
   
</html>

輸出

讓我們執行以下步驟,以瞭解上述程式碼如何工作 −

  • 將上述程式碼儲存在 el.htm 檔案中。

  • 在瀏覽器中開啟此 HTML 檔案。

backbonejs_view.htm
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