BackboneJS - Collection Clone

更新于 2025/12/3 19:31:00

描述

它返回一个具有相同模型列表的集合的新实例。

语法

collection.clone()

示例

<!DOCTYPE html>
<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">
         
        //'Person' 是模型名称
        var Person = Backbone.Model.extend();
        
        //模型实例 'person' 包含 'name' 属性
        var person = new Person ({
            name: 'Sachin Tendulkar'
        });
        
        var MyCollection = Backbone.Collection.extend ({
            model: Person //通过指定集合类的"model"属性覆盖模型
        });
        var myCollection = new MyCollection();
        
        // clone() 方法使用 get 方法来检索 'name' 属性
        var details = myCollection.clone(person.get('name'));
        
        //变量 'details' 将 'name' 的值赋为 'M.S.Dhoni'
        details.name = "M.S.Dhoni";
        document.write("集合的新实例是： ",JSON.stringify(details.name));
      </script>
      
   </body>
</html>