实现简单的FAQ折叠效果
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>FAQ效果aa25.cn</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="Author" content="Sheneyan" />
<script type="text/javascript">
var lastFaqClick=null;//上次点击的faq
window.onload=function(){
var faq=document.getElementById("faq");
var dls=faq.getElementsByTagName("dl");
for (var i=0,dl;dl=dls[i];i++){
var dt=dl.getElementsByTagName("dt")[0];//取得标题
dt.id = "faq_dt_"+(Math.random()*100);
dt.onclick=function(){
var p=this.parentNode;//取得父节点
if (lastFaqClick!=null&&lastFaqClick.id!=this.id){
var dds=lastFaqClick.parentNode.getElementsByTagName("dd");
for (var i=0,dd;dd=dds[i];i++)
dd.style.display='none';
}
lastFaqClick=this;
var dds=p.getElementsByTagName("dd");//取得该父节点所有的子节点，也就是所有的答案
var tmpDisplay='none';
if (gs(dds[0],'display')=='none')
tmpDisplay='block';
for (var i=0;i<dds.length;i++)
dds[i].style.display=tmpDisplay;
}
}
}
/**
*取得元素的真实css属性
*written in 06.7 sheneyan
*/
function gs(d,a){
if (d.currentStyle){
var curVal=d.currentStyle[a]
}else{
var curVal=document.defaultView.getComputedStyle(d, null)[a]
}
return curVal;
}
</script>
<style type="text/css">
*,html,body{margin:0;padding:0}
#faq dt{font-weight:bold;cursor:pointer}
#faq dd{display:none;}
</style>
</head>
<body>
<ul id="faq">
<li>
<dl><dt>问题1 </dt><dd>答：1 aa25.cn </dd></dl>
</li>
<li>
<dl><dt>问题2 </dt><dd>答：2 aa25.cn </dd></dl>
</li>
<li>
<dl><dt>问题3 </dt><dd>答：3 aa25.cn </dd></dl>
</li>
<li>
<dl><dt>问题4 </dt><dd>答：4 aa25.cn </dd></dl>
</li>
</li>
</ul>
</body>
</html>
