一旦在集合中创建了模型实例,就可以通过定义初始化函数来调用它。
句法:
new Backbone.Collection(models, options)
models:用于指定模型的初始数组。
选项:这些是通过传递模型对象直接附加到集合的集合类型。
让我们举个例子。
请参阅以下示例:
<!DOCTYPE html>
<head>
<title>Initialize 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 model 'MyTeam' contains default values and extended using the Backbone.Model class
var MyTeam = Backbone.Model.extend({
defaults: {
player: "Dhoni", country: "India"
}, //The model instance is invoked by defining initialize function
initialize: function(){
document.write("Welcome to srcmini");
}
});
//The 'MyTeam1' is a collection instance and model 'MyTeam' is specified by overriding the 'model' property
var MyTeam1 = Backbone.Collection.extend({
model: MyTeam
});
var player1 = new MyTeam({
player: "Ajeet", country: "India"
});
//The 'player1' is a type of collection by passing model object in the collection
var myval=new MyTeam1([player1]);
//The 'myval.models' define the array of models inside the collection
document.write("<br>"+JSON.stringify(myval.models));
</script>
</body>
</html>
输出:
将以上代码保存在extend.html文件中,然后在新的浏览器中打开此文件。
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