Backbone sample environment

HTML

<script src="http://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.1.7/underscore-min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/backbone.js/0.5.3/backbone-min.js"></script>

JavaScript

var V=Backbone.View.extend({
tagName:'li',
  id:'thing',
    className:'active',
    attributes:{
    'data-value': 12345
    }

});  

var v=new V();
$('body').prepend(v.el);