plugins.js

// Avoid `console` errors in browsers that lack a console.
(function () {
  var method;
  var noop = function () {};
  var methods = [
    'assert', 'clear', 'count', 'debug', 'dir', 'dirxml', 'error',
    'exception', 'group', 'groupCollapsed', 'groupEnd', 'info', 'log',
    'markTimeline', 'profile', 'profileEnd', 'table', 'time', 'timeEnd',
    'timeStamp', 'trace', 'warn'
  ];
  var length = methods.length;
  var console = (window.console = window.console || {});

  while (length--) {
    method = methods[length];

    // Only stub undefined methods.
    if (!console[method]) {
      console[method] = noop;
    }
  }
}());

// Bootstrap hover plugin
// https://github.com/CWSpear/twitter-bootstrap-hover-dropdown

(function ($, window, undefined) {
  // don't do anything if touch is supported
  // (plugin causes some issues on mobile)
  if ('ontouchstart' in document) return;

  // outside the scope of the jQuery plugin to
  // keep track of all dropdowns
  var $allDropdowns = $();

  // if instantlyCloseOthers is true, then it will instantly
  // shut other nav items when a new one is hovered over
  $.fn.dropdownHover = function (options) {

    // the element we really care about
    // is the dropdown-toggle's parent
    $allDropdowns = $allDropdowns.add(this.parent());

    return this.each(function () {
      var $this = $(this),
        $parent = $this.parent(),
        defaults = {
          delay: 500,
          instantlyCloseOthers: true
        },
        data = {
          delay: $(this).data('delay'),
          instantlyCloseOthers: $(this).data('close-others')
        },
        settings = $.extend(true, {}, defaults, options, data),
        timeout;

      $parent.hover(function (event) {
        // so a neighbor can't open the dropdown
        if (!$parent.hasClass('open') && !$this.is(event.target)) {
          return true;
        }

        if (settings.instantlyCloseOthers === true)
          $allDropdowns.removeClass('open');

        window.clearTimeout(timeout);
        $parent.addClass('open');
        $parent.trigger($.Event('show.bs.dropdown'));
      }, function () {
        timeout = window.setTimeout(function () {
          $parent.removeClass('open');
          $parent.trigger('hide.bs.dropdown');
        }, settings.delay);
      });

      // this helps with button groups!
      $this.hover(function () {
        if (settings.instantlyCloseOthers === true)
          $allDropdowns.removeClass('open');

        window.clearTimeout(timeout);
        $parent.addClass('open');
        $parent.trigger($.Event('show.bs.dropdown'));
      });

      // handle submenus
      $parent.find('.dropdown-submenu').each(function () {
        var $this = $(this);
        var subTimeout;
        $this.hover(function () {
          window.clearTimeout(subTimeout);
          $this.children('.dropdown-menu').show();
          // always close submenu siblings instantly
          $this.siblings().children('.dropdown-menu').hide();
        }, function () {
          var $submenu = $this.children('.dropdown-menu');
          subTimeout = window.setTimeout(function () {
            $submenu.hide();
          }, settings.delay);
        });
      });
    });
  };

  $(document).ready(function () {
    // apply dropdownHover to all elements with the data-hover="dropdown" attribute
    $('[data-hover="dropdown"]').dropdownHover();
  });
})(jQuery, this);