https://www.uaeteamemirates.com/wp-content/themes/uae-abudhabi/js/custom/hamburger.js

1jQuery( document ).ready(function() {
2    var trigger = jQuery('#hamburger'),
3        isClosed = false;
4
5    trigger.click(function () {
6      burgerTime();
7    });
8
9    function burgerTime() {
10      if (isClosed == true) {
11        trigger.removeClass('is-open');
12        trigger.addClass('is-closed');
13        isClosed = false;
14        jQuery('.navigation-menu-social-container').removeClass('open');
15      } else {
16        trigger.removeClass('is-closed');
17        trigger.addClass('is-open');
18        isClosed = true;
19        jQuery('.navigation-menu-social-container').addClass('open');
20      }
21    }
22
23  });