https://helcom.fi/wp-content/themes/helcom-teema/js/navigation.js?ver=1

1/**
2 * File navigation.js.
3 *
4 * Handles toggling the navigation menu for small screens and enables TAB key
5 * navigation support for dropdown menus.
6 */
7
8jQuery(document).ready(function ($) {
9
10	(function () {
11		var container, button, menu, links, i, len, animtarget;
12		container = document.getElementById('site-navigation');
13		if (!container) {
14			console.log('no container');
15			return;
16		}
17
18		button = container.getElementsByTagName('button')[0];
19		if ('undefined' === typeof button) {
20			return;
21		}
22
23		menu = container.getElementsByTagName('ul')[0];
24
25		// Hide menu toggle button if menu is empty and return early.
26		if ('undefined' === typeof menu) {
27			button.style.display = 'none';
28			return;
29		}
30
31		menu.setAttribute('aria-expanded', 'false');
32		if (-1 === menu.className.indexOf('nav-menu')) {
33			menu.className += ' nav-menu';
34		}
35		button.onclick = function () {
36			if (-1 !== container.className.indexOf('toggled')) {
37				container.className = container.className.replace(' toggled', '');
38				button.setAttribute('aria-expanded', 'false');
39				menu.setAttribute('aria-expanded', 'false');
40			} else {
41				container.className += ' toggled';
42				button.setAttribute('aria-expanded', 'true');
43				menu.setAttribute('aria-expanded', 'true');
44			}
45		};
46
47		// Get all the link elements within the menu.
48		links = menu.getElementsByTagName('a');
49
50		// Each time a menu link is focused or blurred, toggle focus.
51		for (i = 0, len = links.length; i < len; i++) {
52			links[i].addEventListener('focus', toggleFocus, true);
53			links[i].addEventListener('blur', toggleFocus, true);
54		}
55
56		/**
57		 * Sets or removes .focus class on an element.
58		 */
59		function toggleFocus() {
60			var self = this;
61
62			// Move up through the ancestors of the current link until we hit .nav-menu.
63			while (-1 === self.className.indexOf('nav-menu')) {
64
65				// On li elements toggle the class .focus.
66				if ('li' === self.tagName.toLowerCase()) {
67					if (-1 !== self.className.indexOf('focus')) {
68						self.className = self.className.replace(' focus', '');
69					} else {
70						self.className += ' focus';
71					}
72				}
73
74				self = self.parentElement;
75			}
76		}
77
78		/**
79		 * Toggles `focus` class to allow submenu access on tablets.
80		 */
81		(function (container) {
82			var touchStartFn, i,
83				parentLink = container.querySelectorAll('.menu-item-has-children > a, .page_item_has_children > a');
84
85			if ('ontouchstart' in window) {
86				touchStartFn = function (e) {
87					var menuItem = this.parentNode, i;
88
89					if (!menuItem.classList.contains('focus')) {
90						e.preventDefault();
91						for (i = 0; i < menuItem.parentNode.children.length; ++i) {
92							if (menuItem === menuItem.parentNode.children[i]) {
93								continue;
94							}
95							menuItem.parentNode.children[i].classList.remove('focus');
96						}
97						menuItem.classList.add('focus');
98					} else {
99						menuItem.classList.remove('focus');
100					}
101				};
102
103				for (i = 0; i < parentLink.length; ++i) {
104					parentLink[i].addEventListener('touchstart', touchStartFn, false);
105				}
106			}
107		}(container));
108	})();
109
110	// get ancestor for side navigation
111	var menu_item = $('.second-menu .current_page_item, .second-menu .current_page_ancestor').clone();
112
113	var subMenuItems = $('#sidemenu ul.children .page_item');
114
115	if (subMenuItems.length > 0) {
116		menu_item.appendTo('.sub-menu-header');
117	} else {
118		return
119	}
120
121});