<!doctype html><html><head>??? <meta charset="UTF-8">??? <title>下拉菜單</title>??? <style type="text/css">body,ul,li{ margin:0; padding:0; font-size:13px;}ul,li{list-style:none;}#divselect{width:186px; margin:80px auto; position:relative; z-index:10000;}#divselect cite{width:150px; height:24px;line-height:24px; display:block; color:#807a62; cursor:pointer;font-style:normal;padding-left:4px; padding-right:30px; border:1px solid #333333; background:url(xjt.png) no-repeat right center;}#divselect ul{width:184px;border:1px solid #333333; background-color:#ffffff; position:absolute; z-index:20000; margin-top:-1px; display:none;}#divselect ul li{height:24px; line-height:24px;}#divselect ul li a{display:block; height:24px; color:#333333; text-decoration:none; padding-left:10px; padding-right:10px;}?? ?</style>?? <script type="text/javascript">window.onload=function(){?? ?var box=document.getElementById('divselect'),?? ???? title=box.getElementsByTagName('cite')[0],?? ???? menu=box.getElementsByTagName('ul')[0],?? ???? as=box.getElementsByTagName('a'),????? index=-1;? ???? // 點(diǎn)擊三角時(shí)??? title.onclick=function(e){????? // 執(zhí)行腳本????? e = e || window.event;????? menu.style.display = 'block';????? if(e.Propagation){???????? e.propagation();????? }else{?????????? e.cancleBubble = true;????? }??? } ?? ???? document.onkeyup = function(e){??????? e = e || window.event;??????? if(e.keyCode == 40){//向下?? ???????????? index++;??????????? if(index>=as.length){??????????????? index = 0;??????????? }??????????? changeB();??????? }??????? if(e.keyCode == 38){//向上??????????? if(index<=0){??????????????? index = as.length-1;??????????? }??????????? index--;??????????? changeB();??????? }??????? if(e.keyCode == 13){??????????? title.innerHTML = as[index].innerHTML;??????????? for(var i=0;i<as.length;i++){??????????????? as[i].style.background = 'none';??????????? }??????????? index = -1;??????????? menu.style.display = 'none';??????? }??? }?? // 滑過(guò)滑過(guò)、離開、點(diǎn)擊每個(gè)選項(xiàng)時(shí)????? // 執(zhí)行腳本??? for(var i=0;i<as.length;i++){??????? as[i].onmouseover = function(){??????????? this.style.background = 'grey';??????? }??????? as[i].onmouseout = function(){??????????? this.style.background = 'none';??????? }??????? as[i].onclick = function(e){??????????? e = e || window.event;??????????? if(e.Propagation){??????????????? e.propagation();??????????? }else{??????????????? e.cancleBubble = true;??????????? }??????????? menu.style.display = 'none';??????????? title.innerHTML = this.innerHTML;??????? }??? }??? function changeB(){??????? for(var i=0;i<as.length;i++){??????????? as[i].style.background = 'none';??????? }??????? as[index].style.background = 'grey';??? }??? document.onclick = function(){??????? menu.show.display = 'none';??? }?}?? </script></head><body>?? ?<div id="divselect">????? <cite>請(qǐng)選擇分類</cite>????? <ul>???????? <li id="li"><a href="javascript:;" selectid="1">ASP開發(fā)</a></li>???????? <li><a href="javascript:;" selectid="2">.NET開發(fā)</a></li>???????? <li><a href="javascript:;" selectid="3">PHP開發(fā)</a></li>???????? <li><a href="javascript:;" selectid="4">Javascript開發(fā)</a></li>???????? <li><a href="javascript:;" selectid="5">Java特效</a></li>????? </ul>??? </div></body></html>
為何不能隱藏menu
Purplefly
2016-10-17 14:31:12