javascript FAQ函數(提問+回複)

效果如：當點擊問題時顯示下面的回複內容。
複製代碼 代碼如下:script type="text/javascript">
onload = function(){
faq(document.getElementsByTagName("dl")[0], "dt", "dd");
/*
* faq函數：elem是父元素，qTag是標題元素，aTag是內容元素
*/
}
function faq(elem, qTag, aTag){
aTag = aTag || "dd"; //提供預設值，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;
//獲得當前元素的下一個元素的引用
while (next.nodeType != 1) {
next = next.nextSibling;
}
if (next.style.display != "none") {
next.style.display = "none";
}
else {
next.style.display = "block";
}
}
}
}
</script>

測試代碼：<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><br /><style type="text/css"> dd { background: #eee; border: 1px solid #ccc; margin-left: 2px; padding: 4px; } </style><dl><dt><b>One question:What are ready to do?</b></dt><dd>What I want to do is you,do you understand my feeling to you. </p><p>I hope you are the same to me.</dd><dt><b>Two questing:What do you want?</b></dt><dd>I want to see you now,I miss you so much,I want to see you at this moment.</dd><dt>Three question:Do you want to have a girlfriend?</dt><dd>I think everyone want it so much,me too,I want to have someone talk to me everyday.</dd></dl><p>