BackboneJS collection.add()方法

它用於一個模型或模型陣列新增到集合。

語法

collection.add(models,options)

引數:

models: 包含集合範例，這是需要的集合中要新增的名稱。
options: 包括模型型別，並將它們新增到集合範例。

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">
         //'Player' is a model and contain defualt value for model
         var Player = Backbone.Model.extend({
            defaults: {
               name: "sachin",
               country:"india"
            }
         });

         //The 'PlayersCollection' is a collection instance and model 'Player' is specified by overriding the 'model' property
         var PlayersCollection = Backbone.Collection.extend({
            model: Player
         });

         //The instances "player1" and "player2" are created for the model "Player"
         var player1 = new Player({name: "dhoni",  country:"india"});
         var player2 = new Player({name: "raina",  country:"india"});

         //The add() method adds the models 'player1' and 'player2' to the collection instance 'mycollection'
         var mycollection = new PlayersCollection();
         mycollection.add([player1,player2]);

         //The 'length' property deteremines length of the collection
         document.write('Number of added players : ' + mycollection.length);
      </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add.html
在瀏覽器開啟這個HTML檔案。