123456789101112131415161718192021222324252627282930313233343536373839class="nav"class="nav-main"天猫服装蔬菜水果鞋类class="nav-main"京东服装蔬菜水果鞋类class="nav-main"唯品会服装蔬菜水果鞋类class="nav-main"慢慢买服装蔬菜水果鞋类
1234567891011121314151617181920212223242526272829303132333435363738394041* {margin:0;padding:0;}li {list-style:none}.nav {width:400px;height:40px;background-color:#30ea70;margin:100px auto;}.nav div {float:left;text-align:center;width:25%;height:100%;}.nav .nav-main h4 {width:100%;height:100%;line-height:40px;text-align:center;color:#fff;}.nav .nav-main ul {width:100%;height:400%;/* background-color:#eee;*/display:none;}.nav .nav-main:hover {background-color:pink;}.nav .nav-main:first-child ul {background-color:red;}.nav .nav-main:nth-of-type(2) ul {background-color:green;
123456789101112$(function() {var tab = $(".nav .nav-main");tab.mouseover(function(event) {$(this).find("ul").stop();$(this).find("ul").slideDown();}).mouseout(function(event) {$(this).find("ul").stop();$(this).find("ul").slideUp();});;})
主要运用jquery滑入滑出的方法