srcmini本文概述
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。
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="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">
//'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。
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