效果如下图：当点击问题时显示下面的回复内容。
复制代码 代码如下:
script type="text/javascript">
onload = function(){
faq(document.getElementsByTagName("dl")[0], "dt", "dd");
}
function faq(elem, qTag, aTag){
aTag = aTag || "dd"; //提供默认值，下同
qTag = qTag || "dt";
elem = elem || document;
var dds = elem.getElementsByTagName(aTag);
for (var i = 0, len = dds.length; i < len; i++) {
dds[i].style.display = "none";
}
var dts = elem.getElementsByTagName(qTag);
for (var i = 0, len = dts.length; i < len; i++) {
dts[i].style.cursor = "hand";
dts[i].onclick = function(){
var next = this.nextSibling;
//获得当前元素的下一个元素的引用
while (next.nodeType != 1) {
next = next.nextSibling;
}
if (next.style.display != "none") {
next.style.display = "none";
}
else {
next.style.display = "block";
}
}
}
}
测试代码：
[Ctrl+A 全选 注:引入外部Js需再刷新一下页面才能执行]
