https://a-markets.org/wp-content/plugins/ubermenu/custom/custom.js?ver=3.5

1jQuery(document).ready(function ($) {
2    const window_width = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth;
3
4    if (window_width < 1200) {
5        const $ubermenu = $('.ubermenu.ubermenu-headermainmenu');
6        const $submenus = get_submenus();
7
8        $submenus.each(function (idx, item) {
9            $ubermenu.ubermenu('openSubmenu', $(`#${item.id}`));
10        });
11
12        function get_submenus() {
13            return $ubermenu.find('li.ubermenu-item-has-children.ubermenu-current-menu-item, li.ubermenu-item-has-children.ubermenu-current-menu-ancestor');
14        }
15    }
16});