本文概述
- 参数说明
句法:
Backbone.Collection.extend(properties, classProperties)
参数说明properties:属性为collection类提供实例属性。
classProperties:类属性附加到集合的构造函数上。
【backbone.js集合扩展】让我们举个例子。
请参阅以下示例:
<
!DOCTYPE html>
<
head>
<
title>Extend Collection Example<
/title>
<
script src="http://img.readke.com/220416/0405404200-0.jpg" type="text/javascript"><
/script>
<
script src="http://img.readke.com/220416/04054030Q-1.jpg" type="text/javascript"><
/script>
<
script src="http://img.readke.com/220416/0405403138-2.jpg" type="text/javascript"><
/script>
<
/head>
<
body>
<
script type="text/javascript">
//The model 'MyTeam' includes default values andextended using the Backbone.Model class
var MyTeam = Backbone.Model.extend({
defaults: {
player: "Dhyanchand", 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:
将以上代码保存在extend.html文件中,然后在新的浏览器中打开此文件。
文章图片
推荐阅读
- backbone.js集合模型
- backbone.js模型previousattributes
- backbone.js集合教程
- backbone.js模型previous
- backbone.js模型changedattributes
- backbone.js模型isnew
- backbone.js模型haschanged
- backbone.js模型克隆clone
- backbone.js模型解析parse