BackboneJS Collection.extend()方法
发布于 2015-08-14 15:13:29 | 91 次阅读 | 评论: 0 | 来源: 网络整理
它扩展了backbone集合类来创建自己的集合。
语法
Backbone.Collection.extend(properties, classProperties)
参数:
- properties: 提供集合类实例属性。
- classProperties: 类属性附加到集合的构造函数。
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' includes default values and extended using the Backbone.Model class
var MyTeam = Backbone.Model.extend({
defaults: {
player: "sachin",
country: "india"
},
});
//'MyTeam1' is an instance of the collection
var MyTeam1 = Backbone.Collection.extend({
model: MyTeam //model 'MyTeam' is specified for a collection by overriding the 'model' property
});
//The collection 'MyTeam1' is instantiated by using new keyword
var myval=new MyTeam1({});
//The JSON.stringify() method returns values of collection in the JSON format
document.write("The values in the collection are: ",JSON.stringify(myval));
</script>
</body>
</html>
输出
让我们进行以下步骤来看看上面的代码工作：
-
保存上述代码到文件extend.html
-
在浏览器中打开这个HTML文件。
