srcmini本文概述
Backbone.js Collection Add方法用于将模型或模型数组添加到集合中。
句法：
collection.add(models, options)参数说明
模型：它包含集合实例的名称，需要在集合中添加它们。
选项：包括模型类型，并将它们添加到集合实例中。
让我们举个例子。
请参阅以下示例：
<!DOCTYPE html>
<head>
<title>Add 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">
//Consider a model 'Player' containing default values.
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: "Dhoni", country:"India"});
var player2 = new Player({name: "Sehwag", country:"India"});
var player3 = new Player({name: "Virat", country:"India"});
//The add() method adds the models 'player1''player2' and'player3' to the collection instance 'mycollection'
var mycollection = new PlayersCollection();
mycollection.add([player1, player2, player3]);
//The 'length' property deteremines length of the collection
document.write('Number of added players : ' + mycollection.length);
</script>
</body>
</html>输出：
将上面的代码保存在add.html文件中，并在新的浏览器中打开该文件：
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