<!doctype html><html><head><meta charset="utf-8"><title>点击添加边框，再点击去掉边框</title><style>ul li{float:left;list-style:none;width:50px;height:30px;border:1px solid #E3E3E3;line-height:30px;text-align:center;margin-left:10px;cursor:pointer;}.yy{border:1px solid red;}</style></head><script src="superslide/js/jquery1.42.min.js"></script><script>$(document).ready(function(e) {$("ul li").click(function(){$(this).toggleClass('yy');});});</script><body><div><ul><li>洗护</li><li>洗护</li><li>洗护</li><li>洗护</li><li>洗护</li><li>洗护</li><li>洗护</li><li>洗护</li></ul></div></body></html>