Example showing how to use Require.js to load Backbone.js and its dependencies (jQuery and Underscore.js).

main.js

require.config({
  paths: {
    jquery: 'libs/jquery/jquery.min',
    underscore: 'libs/underscore/underscore.min',
    backbone: 'libs/backbone/backbone.min',
    bootstrap: 'libs/bootstrap/bootstrap.min'
  },
  shim: {
    'underscore': {
      exports: '_'
    },
    'backbone': {
      deps: ['underscore', 'jquery'],
      exports: 'Backbone'
    },
    'bootstrap': {
      deps: ['jquery']
    }
  }

});

// The rest of your main.js would go here.