Bootstrap中的Dropdown下拉菜单更改为悬停(hover)触发

;(function($, window, undefined) {// outside the scope of the jQuery plugin to// keep track of all dropdownsvar $allDropdowns = $();// if instantlyCloseOthers is true, then it will instantly// shut other nav items when a new one is hovered over$.fn.dropdownHover = function(options) {// the element we really care about// is the dropdown-toggle's parent$allDropdowns = $allDropdowns.add(this.parent());return this.each(function() {var $this = $(this).parent(),defaults = {delay: 500,instantlyCloseOthers: true},data = {delay: $(this).data('delay'),instantlyCloseOthers: $(this).data('close-others')},options = $.extend(true, {}, defaults, options, data),timeout;$this.hover(function() {if(options.instantlyCloseOthers === true)$allDropdowns.removeClass('open');window.clearTimeout(timeout);$(this).addClass('open');}, function() {timeout = window.setTimeout(function() {$this.removeClass('open');}, options.delay);});});};$('[data-hover="dropdown"]').dropdownHover();})(jQuery, this);