JQUERY实现的小巧简洁的无限级树形菜单，可用于后台或前台侧栏菜单！兼容性也比较好。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>?T±êìa??μμ</title></head><script src="jquery.min.js"></script><style>ul.a{width:100%;cursor:pointer;padding:0 0px;color:white;}ul.a li{list-style-type:none;cursor:pointer;background:#fff;padding:5px 10px;color:black;width:90%;display:none}.treelist{width:222px;}ul.a div{height:34px;width:100%;background:url(jia.jpg) no-repeat;padding-left:27px;padding-top:6px;color:#333333;font-weight:bold;font-size:15px}.shows{display:block}</style><body> <div class="treelist"><ul class="a"><div>ccccc</div> ???<li>xxxx</li> ???<li> ???????<ul class="a"> ???????<div>ccccc</div> ???????????<li>xxxx</li> ???????????<li>xxxx</li> ???????????<li> ???????????????<ul class="a"> ???????????????<div>ccccc</div> ???????????????????<li> ???????????????????????<ul class="a"> ???????????????????????????<div>ccccc</div> ???????????????????????????<li>xxxx</li> ???????????????????????????<li>xxxx</li> ???????????????????????????<li>xxxx</li> ???????????????????????????<li>xxxx</li> ???????????????????????</ul> ???????????????????</li> ???????????????????<li>xxxx</li> ???????????????????<li>xxxx</li> ???????????????????<li>xxxx</li> ???????????????</ul> ???????????</li> ???????????<li>xxxx</li> ???????</ul> ???</li> ???<li>xxxx</li> ???<li>xxxx</li></ul> <ul class="a"><div>ccccc</div> ???<li>xxxx</li> ???<li>xxxx</li> ???<li>xxxx</li> ???<li>xxxx</li></ul> <ul class="a"><div>ccccc</div> ???<li>xxxx</li> ???<li>xxxx</li> ???<li>xxxx</li> ???<li>xxxx</li></ul></div> ??<script>/*$(".a div").each(function(i){ ???var w=$(this).parents("li").width(); ???$(this).css("width",w-100+"px");})*/ $(".a").click(function(){ ???$(this).find("li").click(function(event){ ???????return false ???}) ????????if($(this).hasClass("shows")){ ???????$(this).removeClass("shows"); ???????$(this).find("li").find("ul").removeClass("shows"); ???????$(this).find("li").hide(); ???????$(this).find("div").css("background","url(jia.jpg) no-repeat"); ?????????????????????}else{ ???????$(this).addClass("shows"); ???????$(this).find("li").show(); ???????$(this).find("li").find("ul").find("li").hide(); ???????$(this).show(); ???????$(this).find("div").eq(0).css("background","url(jian.jpg) no-repeat"); ?????} ????})</script></body></html>JQUERY实现的小巧简洁的无限级树形菜单
原文地址：http://www.cnblogs.com/aqxss/p/7458160.html