BackboneJS 集合初始化

當創建模型實例，它是通過定義初始化函數在創建集合時調用。

語法

new Backbone.Collection(models, options)

參數:

models: 指定模型的初始數組。
options: 這些是直接通過傳遞模型對象連接到所述集合的集合類型。

示例

<!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 model 'MyTeam' contains default values and extended using the Backbone.Model class
         var MyTeam = Backbone.Model.extend({
            defaults: {
               player: "sachin",
               country: "india"
            },

            //The model instance is invoked by defining initialize function
            initialize: function(){
               document.write("Welcome to YiiBai!!!");
            }
        });

        //The 'MyTeam1' is a collection instance and model 'MyTeam' is specified by overriding the 'model' property
        var MyTeam1 = Backbone.Collection.extend({
           model: MyTeam
        });
        var player1 = new MyTeam({
           player: "sehwag",
           country: "india"
        });

        //The 'player1' is a type of collection by passing model object in the collection
        var myval=new MyTeam1([player1]);

        //The 'myval.models' define the array of models inside the collection
        document.write("<br>"+JSON.stringify(myval.models));
      </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initialize.html
在瀏覽器打開這個HTML文件。