https://drsusanblock.com/wp-content/themes/basic/themify/js/themify.dropdown.js

1;(function ( $, window, document, undefined ) {
2
3	'use strict';
4
5	$.fn.themifyDropdown = function( options ) {
6
7		var settings = $.extend( { }, options );
8
9		return this.each(function(){
10			if( $(this).hasClass( 'with-sub-arrow' ) )
11				return;
12
13			$(this).addClass( 'with-sub-arrow' )
14				.find( 'li.menu-item-has-children > a:not(.lightbox)' )
15				.append( '<span class="sub-arrow closed" />' );
16		});
17    };
18
19	$( 'body' ).on( 'click touchstart', '.sub-arrow', function(e){
20		e.stopPropagation();
21
22		var menu_item = $( this ).closest( 'li' );
23		var active_tree = $( this ).parents( '.dropdown-open' );
24		$( this ).closest( '.with-sub-arrow' ) // get the menu container
25			.find( 'li.dropdown-open' ).not( active_tree ) // find open (if any) dropdowns
26			.each(function(){
27				close_dropdown( $( this ) );
28			});
29
30		if( menu_item.hasClass( 'dropdown-open' ) ) {
31			close_dropdown( menu_item );
32		} else {
33			open_dropdown( menu_item );
34		}
35
36		return false;
37	} )
38	// clicking menu items where the URL is only "#" is the same as clicking the dropdown arrow
39	.on( 'click touchstart', '.with-sub-arrow a', function(e){
40		if( $( this ).attr( 'href' ) == '#' ) {
41			e.stopPropagation();
42			$( this ).find( '> .sub-arrow' ).click();
43			return false;
44		}
45	} );
46
47	function open_dropdown( $li ) {
48		var dropdown = $li.find( '.sub-menu' ).first()
49			.show().css( 'visibility', 'visible' );
50
51		$li.addClass( 'dropdown-open' );
52		$li.find( '> a .sub-arrow' ).removeClass( 'closed' ).addClass( 'open' );
53	}
54
55	function close_dropdown( $li ) {
56		var dropdown = $li.find( '.sub-menu' ).first()
57			.hide().css( 'visibility', 'hidden' );
58
59		$li.removeClass( 'dropdown-open' );
60		$li.find( '> a .sub-arrow' ).removeClass( 'open' ).addClass( 'closed' );
61	}
62})( jQuery, window, document );