backbone.js集合clone backbone.js集合clone|Backbone.js教程

【backbone.js集合clone】Backbone.js集合克隆方法返回具有相同模型列表的集合的新实例。
句法：

collection.clone()

让我们以一个示例来演示克隆方法。
请参阅以下示例：

< !DOCTYPE html> < head> < title> Clone Collection Example< /title> < script src="http://img.readke.com/220416/06100435N-0.jpg" type="text/javascript">< /script> < script src="http://img.readke.com/220416/0610042Y3-1.jpg" type="text/javascript">< /script> < script src="http://img.readke.com/220416/0610041918-2.jpg" type="text/javascript">< /script> < /head> < body> < script type="text/javascript"> //'Person' is a model name var Person= Backbone.Model.extend(); //The model instance 'person' contains 'name' attribute var person=new Person({ name: 'Chris Martin' }); var MyCollection = Backbone.Collection.extend({ model: Person//model is override by specifying the "model" property of collection class }); var myCollection = new MyCollection(); // The clone() method uses get method to retrieve the 'name' attribute var details = myCollection.clone(person.get('name')); //Use a variable 'details' to assign the value for 'name' as 'John Davison' details.name="John Davison"; document.write("The new instance of collection is: ", JSON.stringify(details.name)); < /script> < /body> < /html>

输出：
将以上代码保存在clone.html文件中，然后在新的浏览器中打开此文件。