本文概述
每当服务器返回模型数据时,都会调用Backbone.js分析方法。集合的数据通过响应对象返回,并且数据以JSON格式返回。
句法:
collection.parse(response, options) )
参数说明
响应:它指定集合的模型属性的数组。
options:如果设置为true,则以JSON格式表示数据。
让我们以一个示例来演示解析方法。
请参阅以下示例:
<!DOCTYPE html>
<head>
<title>Parse 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">
//'MyModel' is a model name and extended using the Backbone.Model class
var MyModel = Backbone.Model.extend();
// The variable 'myData' contains the values which are need to be parsed in the collection
var myData ={
"values": [{
"fname": "Saurav", "lname": "Ganguly", "country": "India"
}]
};
//'MyCollection' is a collection name
var MyCollection = Backbone.Collection.extend({
model: MyModel, //The model 'MyModel' is specified by overriding the 'model' property
parse : function(response, options){
document.write(JSON.stringify(response));
}
});
//The collection instance 'myCollection' extracts the values of 'myData'only if parse is set to true
var mycollection = new MyCollection(myData, { parse: true });
</script>
</body>
</html>
输出:
将以上代码保存在parse.html文件中,然后在新的浏览器中打开此文件。
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