backbone.js集合remove backbone.js集合remove|Backbone.js教程

本文概述

参数说明

Backbone.js集合remove用于从集合中删除模型或模型数组。
句法：

collection.remove(models, options)

参数说明模型：它指定集合实例的名称，需要将其从集合中删除。
【backbone.js集合remove】选项：它包含将从集合中删除的模型类型。
让我们举个例子。
请参阅以下示例：

< !DOCTYPE html> < head> < title>Remove Collection Example< /title> < script src="http://img.readke.com/220416/043QJU5-0.jpg" type="text/javascript">< /script> < script src="http://img.readke.com/220416/043QLF9-1.jpg" type="text/javascript">< /script> < script src="http://img.readke.com/220416/043QK447-2.jpg" type="text/javascript">< /script> < /head> < body> < script type="text/javascript"> //'Player' is a model and contain defualt value for model var Player = Backbone.Model.extend({ defaults: { name: "Sachin", country:"India" } }); //The 'PlayersCollection' is a collection instance and model 'Player' is specified by overriding the 'model' property var PlayersCollection = Backbone.Collection.extend({ model: Player }); //The instances "player1" and "player2" are created for the model "Player" var player1 = new Player({name: "Dravid", country:"India"}); var player2 = new Player({name: "Ganguly", country:"India"}); //The add() method adds the models 'player1' and 'player2' to the collection instance 'mycollection' var mycollection = new PlayersCollection(); mycollection.add([player1, player2]); //The 'length' property deteremines length of the collection document.write('Number of added players : ' + mycollection.length); document.write("< br>"); //The remove() method removes the 'player1' model from the collection mycollection.remove([player1]); document.write('Number of removed players : ' + mycollection.length); < /script> < /body> < /html>

输出：
将上面的代码保存在remove.html文件中，然后在新的浏览器中打开该文件。