srcmini在Backbone.js中，比较器属性用于按排序顺序维护集合。默认情况下，没有用于集合的比较器。
句法：
collection.comparator让我们举个例子。
请参阅以下示例：
<!DOCTYPE html>
<head>
<title>Comparator 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">
var MyModel = Backbone.Model.extend(); //'LangNames' is a model name
//'mydata' variable contains values to be displayed in sorted order
var mydata = [
{id:4, name: 'Sachin Tendulkar'}, {id:2, name: 'Rahul Dravid'}, {id:3, name: 'Saurav Ganguly'}
];
//'myval' is a collection instance and includes array of values stored in 'mydata' variable
var myval = new Backbone.Collection(mydata, {
model:MyModel, //The model 'MyModel' is specified by overriding the "model" property
comparator: 'name' //The 'comparator' maintain the collection in sorted order
});
//Here, displaying the array of values using collection instance 'myval' and 'models' method
document.write("The sorted (based on name) order of collection: ", JSON.stringify(myval)
);
</script>
</body>
</html>输出：
将以上代码保存在compare.html文件中，并在新的浏览器中打开该文件。
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