https://www.insp.gouv.fr/modules/contrib/simple_megamenu/js/simple_megamenu.js?tlvka6

1/**
2 * @file
3 * Contains simple_megamenu.js.
4 */
5
6(function ($, Drupal) {
7  'use strict';
8
9  Drupal.behaviors.simple_megamenu = {
10    attach: function(context, settings) {
11
12      // Basic a11y.
13      // Make the megamenu navigable with keyboard.
14      $('ul.menu--simple-mega-menu li.menu-item--expanded a').on('focusin', function(){
15        $('li.menu-item--expanded').removeClass('focused');
16        $(this).parents('li.menu-item--expanded').addClass('focused');
17      });
18
19      // Close menu on click anywhere.
20      $('body').on('click', function(){
21        $('li.menu-item--expanded').removeClass('focused');
22      });
23
24      // Close menu on escape key press.
25      $(document).keyup(function(e) {
26        if (e.keyCode == 27) {
27          $('li.menu-item--expanded').removeClass('focused');
28        }
29      });
30    }
31  };
32
33}(jQuery, Drupal));