https://www.hec.edu/themes/custom/hec_theme/assets/js/verticale-menu-exed.js?tlu5p3

1Drupal.behaviors.verticaleMenuExed = {
2    attach: (context, settings) => {
3        once('verticaleMenuExed', '.js-custom-exed-nav-item', context).forEach(
4            (navItem) => {
5                navItem.addEventListener('click', () => {
6                    const childWrapper = navItem.closest('.header--exed-nav__item').querySelector('.collapse');
7                    const childItem = childWrapper.querySelector('.js-custom-exed-nav-item[aria-expanded="true"]');
8                    const siblingItem = navItem.closest('.header--exed-nav__list').querySelector(`.js-custom-exed-nav-item[aria-expanded="true"][data-lvl="${navItem.dataset.lvl}"]`);
9
10                    if (navItem.ariaExpanded === "true") {
11                        childItem && trigger(childItem, 'click');
12                    } else {
13                        siblingItem && trigger(siblingItem, 'click');
14                    }
15                });
16            }
17        );
18
19        const setVerticalMenuHeight = () => {
20            const verticalMenu = document.querySelector('.js-verticale-menu-exed', context);
21
22            if (verticalMenu) {
23                const menuHeight = verticalMenu.offsetHeight;
24                document.documentElement.style.setProperty('--verticalMenuExedHeight', `${menuHeight}px`);
25            }
26        };
27
28        if (document.querySelector('.js-verticale-menu-exed')) {
29            setVerticalMenuHeight();
30            window.addEventListener('resize', setVerticalMenuHeight);
31        }
32    }
33};