BackboneJS collection.get(id)方法

用於通過使用ID或CID來檢索集合的模型。

語法

collection.get(id)

引數:

id: 用於獲取從集合的模型。

範例

<!DOCTYPE html>
   <head>
      <title>Collection 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">
         var MyCollection = new Backbone.Collection();

         //The on() method binds callback function to 'MyCollection' instance and invokes whenever an event triggers
         MyCollection.on("change:title", function(model) {

            //When event triggers, it retrieves the title from the collection
            document.write("Hello... " + model.get('title'));
         });
         MyCollection.add({id: 2});  //adds id value as 2 in the collection

         //The 'myvalues' object gets the 'MyCollection' with id = 2
         var myvalues = MyCollection.get(2);

         //Sets the value for the title
         myvalues.set('title', 'Welcome to YiiBai');
      </script>
   </body>
</html>

輸出

讓我們進行以下步驟來看看上面的程式碼工作：

儲存上述程式碼到檔案get.html
在瀏覽器開啟這個HTML檔案。