https://lucyvorelee.pages.dev/wp-content/themes/disco-night-club/assets/js/navigation.js?ver=2.1.2

1/**
2 * Theme functions file.
3 *
4 * Contains handlers for navigation.
5 */
6
7jQuery(function($){
8 	"use strict";
9   	jQuery('.main-menu-navigation > ul').superfish({
10		delay:       500,
11		animation:   {opacity:'show',height:'show'},
12		speed:       'fast'
13   	});
14
15   	$( window ).scroll( function() {
16		if ( $( this ).scrollTop() > 200 ) {
17			$( '.back-to-top' ).addClass( 'show-back-to-top' );
18		} else {
19			$( '.back-to-top' ).removeClass( 'show-back-to-top' );
20		}
21	});
22
23	// Click event to scroll to top.
24	$( '.back-to-top' ).click( function() {
25		$( 'html, body' ).animate( { scrollTop : 0 }, 500 );
26		return false;
27	});
28});
29
30function disco_night_club_open() {
31	jQuery(".sidenav").addClass('show');
32}
33function disco_night_club_close() {
34	jQuery(".sidenav").removeClass('show');
35    jQuery( '.mobile-menu' ).focus();
36}
37
38function disco_night_club_menuAccessibility() {
39	var links, i, len,
40	    disco_night_club_menu = document.querySelector( '.nav-menu' ),
41	    disco_night_club_iconToggle = document.querySelector( '.nav-menu ul li:first-child a' );
42    
43	let disco_night_club_focusableElements = 'button, a, input';
44	let disco_night_club_firstFocusableElement = disco_night_club_iconToggle; // get first element to be focused inside menu
45	let disco_night_club_focusableContent = disco_night_club_menu.querySelectorAll(disco_night_club_focusableElements);
46	let disco_night_club_lastFocusableElement = disco_night_club_focusableContent[disco_night_club_focusableContent.length - 1]; // get last element to be focused inside menu
47
48	if ( ! disco_night_club_menu ) {
49    	return false;
50	}
51
52	links = disco_night_club_menu.getElementsByTagName( 'a' );
53
54	// Each time a menu link is focused or blurred, toggle focus.
55	for ( i = 0, len = links.length; i < len; i++ ) {
56	    links[i].addEventListener( 'focus', toggleFocus, true );
57	    links[i].addEventListener( 'blur', toggleFocus, true );
58	}
59
60	// Sets or removes the .focus class on an element.
61	function toggleFocus() {
62      	var self = this;
63
64      	// Move up through the ancestors of the current link until we hit .mobile-menu.
65      	while (-1 === self.className.indexOf( 'nav-menu' ) ) {
66	      	// On li elements toggle the class .focus.
67	      	if ( 'li' === self.tagName.toLowerCase() ) {
68	          	if ( -1 !== self.className.indexOf( 'focus' ) ) {
69	          		self.className = self.className.replace( ' focus', '' );
70	          	} else {
71	          		self.className += ' focus';
72	          	}
73	      	}
74	      	self = self.parentElement;
75      	}
76	}
77    
78	// Trap focus inside modal to make it ADA compliant
79	document.addEventListener('keydown', function (e) {
80	    let isTabPressed = e.key === 'Tab' || e.keyCode === 9;
81
82	    if ( ! isTabPressed ) {
83	    	return;
84	    }
85
86	    if ( e.shiftKey ) { // if shift key pressed for shift + tab combination
87	      	if (document.activeElement === disco_night_club_firstFocusableElement) {
88		        disco_night_club_lastFocusableElement.focus();

88 // add focus for the last focusable element
89		        e.preventDefault();
90	      	}
91	    } else { // if tab key is pressed
92	    	if (document.activeElement === disco_night_club_lastFocusableElement) { // if focused has reached to last focusable element then focus first focusable element after pressing tab
93		      	disco_night_club_firstFocusableElement.focus(); // add focus for the first focusable element
94		      	e.preventDefault();
95	    	}
96	    }
97	});   
98}
99
100jQuery(function($){
101	$('.mobile-menu').click(function () {
102	    disco_night_club_menuAccessibility();
103  	});
104});