JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://requirejs.org/docs/release/2.1.4/comments/require.js"></script>

JavaScript

requirejs.config({
    paths: {
        'jquery': 'http://code.jquery.com/jquery-1.9.1.min',
        'jquery-ui': 'http://code.jquery.com/ui/1.10.0/jquery-ui.min',
        'modernizr': 'http://modernizr.com/downloads/modernizr-latest',
        'backbone': 'http://backbonejs.org/backbone',
        'underscore': 'http://underscorejs.org/underscore'
    },
    shim: {
        'backbone': {
            deps: ['underscore', 'jquery'],
            exports: 'Backbone'
        },
        'modernizr':{
            exports: 'modernizr'
        },
        'jquery':{
            exports: '$'   
        }
    }
});

require([ 'jquery', 'modernizr', 'backbone'], 
        function($, modernizr, Backbone) {
         
            var m = Backbone.Model.extend();
            console.log(m);
           
        });