srcmini本文概述
它使用JSON格式返回一个数组，该数组包含集合中每个模型的属性哈希。
句法：
collection.toJSON(options)参数说明
options：它包含选项作为集合实例，并将其转换为JSON格式。
让我们举个例子。
请参阅以下示例：
<!DOCTYPE html>
<head>
<title> toJSON 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 contains defualt value for the model
var Player = Backbone.Model.extend({
defaults: {
name: "Sachin"
}
});
//The 'PlayersCollection' is a collection instance and model 'Player' is specified by overriding the 'model' property
var PlayersCollection = Backbone.Collection.extend({
model: Player
});
$(function(){
var mycollection = new PlayersCollection();
//The set() method sets the values for the 'name' attribute
mycollection.set([{name: 'Sania'}, {name: 'Virat'}, {name: 'Dhoni'}
]);
//The JSON.stringify() method returns values of the collection in the JSON format
document.write("The collection values are:", JSON.stringify(mycollection.toJSON()));
});
</script>
</body>
</html>输出：
将上面的代码保存到tojson.html文件中，然后在新的浏览器中打开此文件。
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