https://jscss.qianjia.com:8443/common/js/bootstrap-hover-dropdown.min.js

1;(function($, window, undefined) {
2    // outside the scope of the jQuery plugin to
3    // keep track of all dropdowns
4    var $allDropdowns = $();
5 
6    // if instantlyCloseOthers is true, then it will instantly
7    // shut other nav items when a new one is hovered over
8    $.fn.dropdownHover = function(options) {
9 
10        // the element we really care about
11        // is the dropdown-toggle's parent
12        $allDropdowns = $allDropdowns.add(this.parent());
13 
14        return this.each(function() {
15            var $this = $(this).parent(),
16                defaults = {
17                    delay: 500,
18                    instantlyCloseOthers: true
19                },
20                data = {
21                    delay: $(this).data('delay'),
22                    instantlyCloseOthers: $(this).data('close-others')
23                },
24                options = $.extend(true, {}, defaults, options, data),
25                timeout;
26 
27            $this.hover(function() {
28                if(options.instantlyCloseOthers === true)
29                    $allDropdowns.removeClass('open');
30 
31                window.clearTimeout(timeout);
32                $(this).addClass('open');
33            }, function() {
34                timeout = window.setTimeout(function() {
35                    $this.removeClass('open');
36                }, options.delay);
37            });
38        });
39    };
40 
41    $('[data-hover="dropdown"]').dropdownHover();
42})(jQuery, this);