backbone.js集合push backbone.js集合push|Backbone.js教程

本文概述

参数说明

Backbone.js集合push方法类似于add（）方法。它在集合的末尾添加了一个模型。
句法：

collection.push(models, options)

参数说明模型：它指定集合实例的名称，这些名称将被推送到集合中。
options：它包含模型类型并将其添加到集合实例。
让我们举个例子。
请参阅以下示例：

< !DOCTYPE html> < head> < title>Push Collection Example< /title> < script src="http://img.readke.com/220416/043ZKQ4-0.jpg" type="text/javascript">< /script> < script src="http://img.readke.com/220416/043ZIQ1-1.jpg" type="text/javascript">< /script> < script src="http://img.readke.com/220416/043ZJa0-2.jpg" type="text/javascript">< /script> < /head> < body> < script type="text/javascript"> //The 'Player' is a model name and includes the default values var Player = Backbone.Model.extend({ defaults: { c_id:"", country: "" } }); //The 'PlayersCollection' is a collection instance and model 'Player' is specified by using model property var PlayersCollection = Backbone.Collection.extend({ model: Player }); //The 'country1', 'country2' and 'country3' are instances of the model 'Player' var country1 = new Player({c_id:1, country: "Australia" }); var country2 = new Player({c_id:2, country: "Canada"}); var country3 = new Player({c_id:3, country: "India"}); var mycollection = new PlayersCollection(); //Here, the push() method adds the above models to the collection mycollection.push(country1); mycollection.push(country2); mycollection.push(country3); //'length' property defines total number of models in the collection document.write('Number of countries added: ' + mycollection.length); < /script> < /body> < /html>

输出：
【backbone.js集合push】将以上代码保存在push.html文件中，然后在新的浏览器中打开该文件。