javascript FAQ函数(提问+回复)

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");
/*
* faq函数：elem是父元素，qTag是标题元素，aTag是内容元素
*/
}
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：

One question:What are ready to do?

What I want to do is you,do you understand my feeling to you. I hope you are the same to me.

Two questing:What do you want?

I want to see you now,I miss you so much,I want to see you at this moment.

Three question:Do you want to have a girlfriend?

I think everyone want it so much,me too,I want to have someone talk to me everyday.

[Ctrl+A 全选 注: 如需引入外部Js需刷新才能执行]