发布于 2015-08-14 15:19:32 | 100 次阅读 | 评论: 0 | 来源: 网络整理
表示视图的元素缓存jQuery对象。一个方便的参考，而不是重新包装DOM元素。
view.$el
<!DOCTYPE html>
<head>
<title>View Example</title>
<script src="https://code.jquery.com/jquery-2.1.3.min.js" type="text/javascript"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.2/underscore-min.js" type="text/javascript"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.1.2/backbone-min.js" type="text/javascript"></script>
</head>
<body>
<div id="myapp"></div>
<script type="text/javascript">
//'ViewDemo' is a name of the view class
var ViewDemo = Backbone.View.extend({
//'el' is a view reference in which every element of view associate with HTML content will be rendered
el: '/backbonejs/backbonejs_view.htmlmyapp',
//This function is called when the view is instantiated
initialize: function(){
this.render(); //render method specifies how to handle and what to display in the view
},
//'$el' is cached object which pushes the content defined within it
render: function(){
this.$el.html("Welcome to yiibai.com!!!");
}
});
//'myview' is a instance of the 'ViewDemo' class
var myview = new ViewDemo();
</script>
</body>
</html>
让我们进行以下步骤来看看上面的代码工作：
保存上述代码到dollar-el文件
在浏览器打开这个HTML文件。