srcmini本文概述
Backbone.js集合pop方法类似于remove（）方法。它需要一组模型并从集合中删除模型。
句法：
collection.pop(models, options)参数说明
模型：它指定集合实例的名称，需要从
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>Pop 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 '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);
document.write('Number of pushed countries : ' + mycollection.length);
document.write("<br>");
//The pop() method removes the models from the collection
mycollection.pop(country1);
document.write('Number of popped countries : ' + mycollection.length);
</script>
</body>
</html>输出：
将以上代码保存在pop.html文件中，然后在新的浏览器中打开该文件。
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