https://www.saopaulointernationalairport.com/lib/mobile-nav/mobile-nav.js

1(function ($) {
2  "use strict";
3
4  // Mobile Navigation
5  if ($('.main-nav').length) {
6    var $mobile_nav = $('.main-nav').clone().prop({
7      class: 'mobile-nav d-lg-none'
8    });
9    $('body').append($mobile_nav);
10    $('body').prepend('<button type="button" class="mobile-nav-toggle d-lg-none"><i class="fa fa-bars"></i></button>');
11    $('body').append('<div class="mobile-nav-overly"></div>');
12
13    $(document).on('click', '.mobile-nav-toggle', function(e) {
14      $('body').toggleClass('mobile-nav-active');
15      $('.mobile-nav-toggle i').toggleClass('fa-times fa-bars');
16      $('.mobile-nav-overly').toggle();
17    });
18    
19    $(document).on('click', '.mobile-nav .drop-down > a', function(e) {
20      e.preventDefault();
21      $(this).next().slideToggle(300);
22      $(this).parent().toggleClass('active');
23    });
24
25    $(document).click(function(e) {
26      var container = $(".mobile-nav, .mobile-nav-toggle");
27      if (!container.is(e.target) && container.has(e.target).length === 0) {
28        if ($('body').hasClass('mobile-nav-active')) {
29          $('body').removeClass('mobile-nav-active');
30          $('.mobile-nav-toggle i').toggleClass('fa-times fa-bars');
31          $('.mobile-nav-overly').fadeOut();
32        }
33      }
34    });
35  } else if ($(".mobile-nav, .mobile-nav-toggle").length) {
36    $(".mobile-nav, .mobile-nav-toggle").hide();
37  }
38
39})(jQuery);