Load Fresco.js async and bind gallery of thumbnails

gallery.js

/*
 * Gallery Module that is triggered from a gallery bean block
 * Implemented using frescojs
 * Features
 * - FrescoJS is loaded async in the background like a champ
 * - Click thumbnail to load image link
 *
 * Markup:
 * Assumes a div element has some child elements containing
 * a thumnail link to the large image
 */
app.gallery = (function($){
  'use strict';

  var gallerySelector = '.bean-gallery',
      galleryItemSelector = '.field-collection-item-field-gallery-item',
      galleryItemCaptionSelector = '.field-name-field-gallery-item-caption';

  /*
   *
   * Check if any .bean-gallery DOM elements are on the page.
   * Check if Fresco.js is on the page, and load it if it isn't.
   *
   */
  function bindActions(){
    //Check if any galleries are on the page
    if($(gallerySelector).length){
      //Load fresco if it's not already here
      Modernizr.load({
        test: window.Fresco,
        nope: '/sites/all/themes/dnv/js/src/vendor/fresco.js',
        complete: initAllGalleries
      });
    }
  }

  /*
   * Wrapper function to load all galleries
   * Should only be called once fresco is ready
   */
  function initAllGalleries(){
    $('.bean-gallery').each(function(){
      initGallery(this);
    });
  }

  /*
   *
   * Add necessary JS to create a fresco gallery from
   * a block containing some thumbnails
   *
   * @param {Object} a .bean-gallery DOM element
   *
   */
  function initGallery(element){
    //Array of fresco objects
    var items = [];

    $(element).find('a:has(img)')
      //Build out Fresco config
      .each(function(){
        items.push({
          url: $(this).attr('href'),
          caption: $(this).find(galleryItemCaptionSelector).html()
        });
      })
      //Bind thumbnail click
      .on('click', function(e){
        e.preventDefault();

        //Open gallery with the correct image open
        Fresco.show(items, {}, $(this).closest(galleryItemSelector).index()+1);
      });

  }

  $(document).on('ready', bindActions);

  return {};

})(jQuery);