initialize
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小牛编辑
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2023-12-01
描述 (Description)
创建模型实例时,通过在创建集合时定义initialize函数来调用它。
语法 (Syntax)
new Backbone.Collection(models, options)
参数 (Parameters)
models - 它指定了最初的模型数组。
options - 这些是由传递的模型对象直接附加到集合的集合类型。
例子 (Example)
<!DOCTYPE html>
<html>
<head>
<title>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: "sachin",
country: "india"
},
//The model instance is invoked by defining initialize function
initialize: function() {
document.write("Welcome to xnip!!!");
}
});
//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: "sehwag",
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>