https://www.dtss.us/blog/wp-content/themes/genuine/js/hovermenu.js?ver=1.4

1/**
2 * Project: Bootstrap Hover Dropdown
3 * Author: Cameron Spear
4 * Contributors: Mattia Larentis
5 *
6 * Dependencies: Bootstrap's Dropdown plugin, jQuery
7 *
8 * A simple plugin to enable Bootstrap dropdowns to active on hover and provide a nice user experience.
9 *
10 * License: MIT
11 *
12 * http://cameronspear.com/blog/bootstrap-dropdown-on-hover-plugin/
13 */
14;(function ($, window, undefined) {
15    // outside the scope of the jQuery plugin to
16    // keep track of all dropdowns
17    var $allDropdowns = $();
18
19    // if instantlyCloseOthers is true, then it will instantly
20    // shut other nav items when a new one is hovered over
21    $.fn.dropdownHover = function (options) {
22        // don't do anything if touch is supported
23        // (plugin causes some issues on mobile)
24        if('ontouchstart' in document) return this; // don't want to affect chaining
25
26        // the element we really care about
27        // is the dropdown-toggle's parent
28        $allDropdowns = $allDropdowns.add(this.parent());
29
30        return this.each(function () {
31            var $this = $(this),
32                $parent = $this.parent(),
33                defaults = {
34                    delay: 300,
35                    instantlyCloseOthers: true
36                },
37                data = {
38                    delay: $(this).data('delay'),
39                    instantlyCloseOthers: $(this).data('close-others')
40                },
41                showEvent   = 'show.bs.dropdown',
42                hideEvent   = 'hide.bs.dropdown',
43                // shownEvent  = 'shown.bs.dropdown',
44                // hiddenEvent = 'hidden.bs.dropdown',
45                settings = $.extend(true, {}, defaults, options, data),
46                timeout;
47
48            $parent.hover(function (event) {
49                // so a neighbor can't open the dropdown
50                if(!$parent.hasClass('open') && !$this.is(event.target)) {
51                    // stop this event, stop executing any code 
52                    // in this callback but continue to propagate
53                    return true; 
54                }
55
56                if(settings.instantlyCloseOthers === true)
57                    $allDropdowns.removeClass('open');
58
59                window.clearTimeout(timeout);
60                $parent.addClass('open');
61                $this.trigger(showEvent);
62            }, function () {
63                timeout = window.setTimeout(function () {
64                    $parent.removeClass('open');
65                    $this.trigger(hideEvent);
66                }, settings.delay);
67            });
68
69            // this helps with button groups!
70            $this.hover(function () {
71                if(settings.instantlyCloseOthers === true)
72                    $allDropdowns.removeClass('open');
73
74                window.clearTimeout(timeout);
75                $parent.addClass('open');
76                $this.trigger(showEvent);
77            });
78
79            // handle submenus
80            $parent.find('.dropdown-submenu').each(function (){
81                var $this = $(this);
82                var subTimeout;
83                $this.hover(function () {
84                    window.clearTimeout(subTimeout);
85                    $this.children('.dropdown-menu').show();
86                    // always close submenu siblings instantly
87                    $this.siblings().children('.dropdown-menu').hide();
88                }, function () {
89                    var $submenu = $this.children('.dropdown-menu');
90                    subTimeout = window.setTimeout(function () {
91                        $submenu.hide();
92                    }, settings.delay);
93                });
94            });
95        });
96    };
97
98    $(document).ready(function () {
99        // apply dropdownHover to all elements with the data-hover="dropdown" attribute
100        $('[data-hover="dropdown"]').dropdownHover();
101    });
102})(jQuery, this);