javascriptFAQ函数(提问+回复)_javascript技巧

来源：优库美食网

效果如下图：当点击问题时显示下面的回复内容。

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：

<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> 
<title>Untitled Document</title> 
 
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 
 */ 
}

I hope you are the same to me. 
 
 
<b>Two questing:What do you want?</b> 
 
 
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. 
 
 
</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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javascriptFAQ函数(提问+回复)_javascript技巧