<!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=utf-8" /><title>動畫菜單</title><style type="text/css">* { margin: 0; padding: 0; font-size: 14px; }a { color: #333; text-decoration: none }ul{ list-style: none; }.nav {height: 30px; border-bottom: 5px solid #F60; margin-left:50px; width:600px;}.nav li { float: left; position:relative; height:30px; width:120px }.nav li a { display: block; height: 30px; text-align: center; line-height: 30px; width:120px; background: #efefef; margin-left: 1px; }.subNav{ position:absolute; top:30px; left:0; width:120px; height:0; overflow:hidden}.subNav li a{ background:#ddd }.subNav li a:hover{ background:#efefef}</style><script>window.onload=function(){??? var aLi=document.getElementsByTagName('li');?for(var i=0; i<aLi.length; i++){??aLi[i].onmouseover=function(){??????? var This=this.firstChild;??????? var timer=setInterval(function(){??????????? This.style.height=This.offsetHeight+8+"px";??????????? if(This.offsetHeight>=150){??????????????? clearInterval(timer)??????????? }??????? },30);??}??????? //鼠標離開菜單，二級菜單動畫收縮起來。????aLi[i].onmouseout=function(){????? var This=this.firstChild;??????? var timer1=setInterval(function(){??????????? This.style.height=This.offsetHeight-8+"px";??????????? if(This.offsetHeight<=30){??????????????? clearInterval(timer1)??????????? }??????? },30);???????????}???}}</script></head><body><ul class="nav">??? <li><a href="#">一級菜單</a>??? ?<ul class="subNav">??????? ?<li><a href="#">二級菜單</a></li>??????????? <li><a href="#">二級菜單</a></li>??????????? <li><a href="#">二級菜單</a></li>??????????? <li><a href="#">二級菜單</a></li>??????? </ul>??? </li>??? <li><a href="#">一級菜單</a>??? ?<ul class="subNav">??????? ?<li><a href="#">二級菜單</a></li>??????????? <li><a href="#">二級菜單</a></li>??????????? <li><a href="#">二級菜單</a></li>??????????? <li><a href="#">二級菜單</a></li>??????? </ul>??? </li>??? <li><a href="#">一級菜單</a></li>??? <li><a href="#">一級菜單</a></li>??? <li><a href="#">一級菜單</a></li></ul></body></html>
為什么我的展開后的二級菜單中 的文字不顯示，而且這動畫看起來也有問題
qq_安仁斗辣椒_0
2015-09-13 16:45:49
