仿京东左侧二级导航条

IE6到10，firefox，Chrome没有问题,主要是CSS代码，还有IE6、7JS的兼容问题，最后发现用setTimeout延时显示二级菜单不行，二级菜单会自动隐藏，求高手解答~

HTML代码：

<div id="menu"> <div id="top"><span><a href="#">全部商品分类</a></span></div> <ul id="nav"> <li><a href="#" class="navlia"><span>家用电器</span></a><div><ul><li><b><span><a href="#">大家电</a></span></b><span><a href="#">洗衣剂</a></span><span><a href="#">洗衣剂</a></span><span><a href="#">洗衣剂</a></span><span><a href="#">洗衣剂</a></span></li><li><b><span><a href="#">中家电</a></span></b><span><a href="#">空调</a></span><span><a href="#">洗衣剂</a></span></li><li><b><span><a href="#">小家电</a></span></b><span><a href="#">空调</a></span><span><a href="#">洗衣剂</a></span></li></ul><ul class="navulright"><li><b><span><a href="#">促销活动</a></span></b><span class="closespan"></span></li><li><b><span><a href="#">推荐品牌</a></span></b></li></ul></div> </li> <li><a href="#" class="navlia"><span>手机数码</span></a><div><ul><li><b><span><a href="#">大手机</a></span></b><span><a href="#">手机</a></span><span><a href="#">手机</a></span><span><a href="#">洗衣剂</a></span><span><a href="#">洗衣剂</a></span></li><li><b><span><a href="#">中手机</a></span></b><span><a href="#">手机数码</a></span><span><a href="#">手机数码</a></span></li><li><b><span><a href="#">小手机</a></span></b><span><a href="#">空调</a></span><span><a href="#">手机数码</a></span></li></ul><ul class="navulright"><li><b><span><a href="#">促销活动</a></span></b><span class="closespan"></span></li><li><b><span><a href="#">推荐品牌</a></span></b></li></ul></div> </li> <li><a href="#" class="navlia"><span>电脑办公</span></a><div><ul><li><b><span><a href="#">大电脑</a></span></b><span><a href="#">电脑办公</a></span><span><a href="#">洗衣剂</a></span><span><a href="#">洗衣剂</a></span><span><a href="#">洗衣剂</a></span></li><li><b><span><a href="#">中电脑</a></span></b><span><a href="#">空调</a></span><span><a href="#">电脑办公</a></span></li><li><b><span><a href="#">小电脑</a></span></b><span><a href="#">空调</a></span><span><a href="#">洗衣剂</a></span></li></ul><ul class="navulright"><li><b><span><a href="#">促销活动</a></span></b><span class="closespan"></span></li><li><b><span><a href="#">推荐品牌</a></span></b></li></ul></div> </li> <li><a href="#" class="navlia"><span>家居家装</span></a><div><ul><li><b><span><a href="#">大家居</a></span></b><span><a href="#">家居家装</a></span><span><a href="#">洗衣剂</a></span><span><a href="#">洗衣剂</a></span><span><a href="#">洗衣剂</a></span></li><li><b><span><a href="#">中家家居</a></span></b><span><a href="#">家居家装</a></span><span><a href="#">洗衣剂</a></span></li><li><b><span><a href="#">小家家居</a></span></b><span><a href="#">空调</a></span><span><a href="#">家居家装</a></span></li></ul><ul class="navulright"><li><b><span><a href="#">促销活动</a></span></b><span class="closespan"></span></li><li><b><span><a href="#">推荐品牌</a></span></b></li></ul></div> </li> <li id="foot"><a href="#">全部商品分类</a></li> </ul> </div>

JS代码：

var navli = document.getElementById("nav").children;//获取一级菜单 var con = document.getElementById("nav").getElementsByTagName("div"); //获取二级菜单 //var close=document.getElementsByClassName("closespan"); //IE9之前不支持这个 var timer;//延时显示二级菜单，不会有滑动感。//关闭按钮做的兼容 var id; document.getElementsByClassName = function (className, parentElement) {var children = (parentElement || document.body).getElementsByTagName('*');var elements = [], child;for (var i = 0; i < children.length; i++) {var child = children[i];var classNames = child.className.split(' ');for (var j = 0; j < classNames.length; j++) {if (classNames[j] == className) {elements.push(child); //符合条件的元素加入到数组中break;}}}return elements; }; var close = document.getElementById("nav"); var span=document.getElementsByClassName("closespan", close);//遍历一级菜单数组 for (var i = 0; i < navli.length-1; i++) {navli[i].index = i;//赋值编号span[i].index = i;navli[i].onmouseover = function () { //鼠标一级菜单移入事件id = this.index;//加上这个延时显示二级菜单就不行了，求解答。//timer=setTimeout("con[id].style.display = 'block';navli[id].className = 'navlihover';", 300) con[id].style.display = "block"; //显示二级菜单navli[id].className = "navlihover"; //改变一级菜单边框 }navli[i].onmouseout = function () { //移出事件clearTimeout(timer);//清除延时con[this.index].style.display = "none"; //隐藏二级菜单navli[this.index].className = ""; //改变一级菜单边框样式 }span[i].onclick = function () { //关闭按钮con[this.index].style.display = "none"; //隐藏二级菜单 } }

CSS代码：

#menu{position:relative;margin:10px 10px 10px 20px;width:200px; } #top {height:40px;padding-left:4px;background:url(../images/topleft.jpg) no-repeat; } #top span{ display:block; background-color:#DD0505; } #top a{font-size:12px;font-weight:bold;text-decoration:none;color:#FFF;padding-left:20px;line-height:40px; } #top a:hover{text-decoration:underline; } #nav{position:relative;list-style-type:none;margin:0px;padding:2px 0px;background-color:#FCF4EA;border:2px solid #D00000; } /* 一级菜单 */ #nav li{position:relative;margin:0px;padding:0px;width:180px; } .navlihover a{border-top:1px solid #CC3300;border-bottom:1px solid #CC3300;border-right:1px solid #FFF;border-left:0px;background-color:#FFF;z-index:11; } .navlia{position:relative;border-bottom:1px solid #FFF;border-top:1px solid #FCF4EA;font-size:14px;text-decoration:none;color:#333333;padding:6px 0px 2px 0px;display:block;width:150px;height:20px;z-index:11; } #nav li a:hover{color:#D60404;font-weight:bold;text-decoration:underline; } #nav li span{margin-left:20px; } #nav li p{margin:-26px 0 0 0;float:right; } /* 二级菜单 */ #nav li div {display: none;position:absolute;border:1px solid #CC3300;background-color:#FFF;left:150px; top:-30px; height:200px; width:700px; z-index:10; } #nav li ul{ float:left; margin:0px; padding:0px 0px 0px 5px; list-style-type:none; } #nav li ul a{border:0px;height:17px;width:33px; border-bottom:0px solid #CCC; } #nav li ul a:hover{ text-decoration:underline; } #nav li ul li{ padding:6px 0px; border:0px; width:500px; height:20px; border-bottom:1px dotted #EED6B7; } .navulright { float:left; margin-left:8px !important; width: 180px; height:200px; border-left:1px solid #FBE2C6; background-color:#FCF4EA; } .navulright li {width: 180px !important;height:85px !important;border-bottom:0px !important; } .closespan {display: inline-block !important;width:17px;height:17px;padding:0px !important;margin:0px 5px 0px 80px !important;border:0px !important;cursor:pointer;background-image:url("../images/close.png"); } #nav li ul li span { margin:0px; margin-right:20px; padding-left:5px; border-left:1px solid #CCC; } #nav li ul li span a {color:#333333;font-size:10px;text-decoration:none; } #nav li ul li span a:hover {color:#CC0000;font-size:10px;text-decoration:underline;font-weight:normal; } #nav li ul li b span {border:0px; } #nav li ul li b span a {color: #CC0000;font-size:12px; } #nav li ul li b span a:hover {color: #CC0000;font-size:12px;font-weight:bold; } #foot{position:relative;height:20px;background-color:#FDF1DE;z-index:-1; /*ie6 hack*/ } #foot a{font-size:10px;text-decoration:none;color:#CC0000;padding-left:18px;line-height:20px; } #foot a:hover{text-decoration:underline; }

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转载于:https://www.cnblogs.com/lideyang/archive/2012/10/19/2731271.html

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