Backbone.js 集合 get 方法用于从集合中检索模型,由 id、Cid 指定或通过传入模型来指定。
用法:
collection.get(id)
参数说明:
id:它用于从集合中获取模型。
让我们举个例子。
看这个例子:
<!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("JavaTpoint-- " + 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:
将上述代码保存在 get.html 文件中并在新浏览器中打开此文件。
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注:本文由纯净天空筛选整理自 Backbone.js collection.get()。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。