JS实现下拉框中当鼠标离开下拉菜单时立即隐藏菜单

var self = this; window.tryCollapse = function() { if (window.needCollapse) { if (self.isExpanded()) { self.collapse(); } window.needCollapse = false; } } $('.view-container').children().bind('mouseout', function(e) { window.needCollapse = true; setTimeout(function() { window.tryCollapse(); }, 100); }); var btn = $('.fr-trigger-btn-up', this.element); var view = this.$view; btn.bind('click', function() { if (!self.isExpanded()) { return; } setTimeout(function() { $('.fr-combo-list-item', view).bind('mouseover', function() { window.needCollapse = false; }); //mouseout（鼠标移开）时，隐藏当前下拉框待选部分 }, 100); });