JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.6.0/underscore-min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.1.2/backbone-min.js"></script>
<div id="div-1">test</div>
<div id="div-2">test2</div>

JavaScript

x = Backbone.View.extend({
    events: {
      'click': 'say_hi'
    },

    initialize: function( options ){
    },

    say_hi: function(){
      alert( this.el.id );
    }

  });
y = new x( {el: '#div-1'} );
z = new x( {el: '#div-2'} );