https://novieauto.ru/wp-content/themes/newspaper-x-auto/assets/js/navigation.js?ver=6.8.1

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(function () {
8	var container, button, menu, links, subMenus, i, len;
9
10	container = document.getElementById('site-navigation');
11	if ( !container ) {
12		return;
13	}
14
15	button = container.getElementsByTagName('button')[ 0 ];
16	if ( 'undefined' === typeof button ) {
17		return;
18	}
19
20	menu = container.getElementsByTagName('ul')[ 0 ];
21
22	// Hide menu toggle button if menu is empty and return early.
23	if ( 'undefined' === typeof menu ) {
24		button.style.display = 'none';
25		return;
26	}
27
28	menu.setAttribute('aria-expanded', 'false');
29	if ( -1 === menu.className.indexOf('nav-menu') ) {
30		menu.className += ' nav-menu';
31	}
32
33	button.onclick = function () {
34		if ( -1 !== container.className.indexOf('toggled') ) {
35			container.className = container.className.replace(' toggled', '');
36			button.setAttribute('aria-expanded', 'false');
37			menu.setAttribute('aria-expanded', 'false');
38		} else {
39			container.className += ' toggled';
40			button.setAttribute('aria-expanded', 'true');
41			menu.setAttribute('aria-expanded', 'true');
42		}
43	};
44
45	window.addEventListener('resize', function () {
46		var width = window.innerWidth;
47		if ( width > 600 && -1 !== container.className.indexOf('toggled') ) {
48			container.className = container.className.replace(' toggled', '');
49			button.setAttribute('aria-expanded', 'false');
50			menu.setAttribute('aria-expanded', 'false');
51		}
52	}, true);
53
54	// Get all the link elements within the menu.
55	links = menu.getElementsByTagName('a');
56	subMenus = menu.getElementsByTagName('ul');
57
58	// Set menu items with submenus to aria-haspopup="true".
59	for ( i = 0, len = subMenus.length; i < len; i++ ) {
60		subMenus[ i ].parentNode.setAttribute('aria-haspopup', 'true');
61	}
62
63	// Each time a menu link is focused or blurred, toggle focus.
64	for ( i = 0, len = links.length; i < len; i++ ) {
65		links[ i ].addEventListener('focus', toggleFocus, true);
66		links[ i ].addEventListener('blur', toggleFocus, true);
67	}
68
69	/**
70	 * Sets or removes .focus class on an element.
71	 */
72	function toggleFocus() {
73		var self = this;
74
75		// Move up through the ancestors of the current link until we hit .nav-menu.
76		while ( -1 === self.className.indexOf('nav-menu') ) {
77
78			// On li elements toggle the class .focus.
79			if ( 'li' === self.tagName.toLowerCase() ) {
80				if ( -1 !== self.className.indexOf('focus') ) {
81					self.className = self.className.replace(' focus', '');
82				} else {
83					self.className += ' focus';
84				}
85			}
86
87			self = self.parentElement;
88		}
89	}
90})();