https://jurnalbengkulu.com/modules/responsive_menu/js/responsive_menu.bootstrap.js?v=8.9.20

1(function () {
2
3  'use strict';
4
5  /**
6   * Provides the off-canvas menu.
7   *
8   * @type {Drupal~behavior}
9   *
10   * @prop {Drupal~behaviorAttach} attach
11   *   Attaches the behavior for the bootstrap modifications.
12   */
13  Drupal.behaviors.responsive_menu_bootstrap = {
14    attach: function (context) {
15      // Hijack the Bootstrap toggler so it expands the mmenu rather than the
16      // bootstrap dropdown menu.
17      let parent = document.querySelector('#navbar-main');
18      let offCanvas = document.querySelector('#off-canvas');
19
20      if (parent && offCanvas.hasOwnProperty('mmApi') && typeof (Mmenu) !== 'undefined' && !parent.classList.contains('mmenu-bootstrap')) {
21        // Add a class to the parent so that this code is only triggered once.
22        parent.classList.add('mmenu-bootstrap')
23
24        // Remove bootstrap classes from the off-canvas menu.
25        _removeClasses(offCanvas.getElementsByTagName('a'));
26        _removeClasses(offCanvas.getElementsByTagName('li'));
27        _removeClasses(offCanvas.getElementsByTagName('ul'));
28
29        let toggler = parent.querySelector('.navbar-toggler');
30
31        if (toggler) {
32          toggler.removeAttribute('data-target');
33          // delete toggler.dataset.target; // IE10 has no dataset :(
34          toggler.removeAttribute('aria-controls');
35
36          // Remove all bound events.
37          toggler.outerHTML = toggler.outerHTML;
38          toggler = parent.querySelector('.navbar-toggler');
39
40          // Get the mmenu API.
41          const mmenuApi = offCanvas.mmApi;
42
43          // Open the menu on-click.
44          toggler.addEventListener('click', function(e) {
45            e.preventDefault();
46            e.stopImmediatePropagation();
47            // Check if the menu needs to open or close.
48            let opened = offCanvas.classList.contains('mm-menu_opened');
49            // Trigger the open or close method.
50            mmenuApi[opened ? 'close' : 'open']();
51          });
52        }
53
54        // Removes bootstrap classes.
55        function _removeClasses(els) {
56          [].forEach.call(els, function(el) {
57            el.classList.remove('nav', 'nav-link', 'nav-item')
58          })
59        }
60      }
61
62    }
63
64  }
65
66})();