本文概述
Backbone.js集合的get方法用于从集合中检索模型,该模型由id,Cid或传入模型指定。
句法:
collection.get(id)
参数说明
id:用于从集合中获取模型。
让我们举个例子。
请参阅以下示例:
<!DOCTYPE html>
<head>
<title>Get 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 MyCollection = new Backbone.Collection();
//The on() method binds callback function to 'MyCollection' instance and invokes whenever an event triggers
MyCollection.on("change:title", function(model) {
//When event triggers, it retrieves the title from the collection
document.write("srcmini-- " + model.get('title'));
});
MyCollection.add({id: 2}); //adds id value as 2 in the collection
//The 'myvalues' object gets the 'MyCollection' with id = 2
var myvalues = MyCollection.get(2);
//Sets the value for the title
myvalues.set('title', 'A Solution of All Technology.');
</script>
</body>
</html>
输出:
将以上代码保存在get.html文件中,然后在新的浏览器中打开该文件。
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