BackboneJS教學 » BackboneJS collection.fetch()方法

BackboneJS collection.fetch()方法

它使用sync方法在模型集合中提取資料。

語法

collection.fetch(options)

引數:

  • options: 選項需要將這兩個作為引數傳遞成功和錯誤回撥。

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">
         //The sync() method represents state of a model
         Backbone.sync = function(method, model) {

            //The 'method' gives 'read' state of the model by representing data in JSON format
            document.write("The fetched details are: ",method + ": " + JSON.stringify(model));
         };

         //The collection instance 'details' contains the values which are to be fetched in the collection
         var details = new Backbone.Collection({
            Name:"Sachin Tendulkar",
            Country:"India"
         });

         //This will display the model state by delegating the 'sync()' method
         details.fetch();
      </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：

  • 儲存上述程式碼在檔案fetch.html

  • 在瀏覽器開啟這個HTML檔案。