本文实例讲述了Javascript通过overflow控制列表闭合与展开的方法。分享给大家供大家参考。具体实现方法如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>通过overflow控制列表闭合展开</title>
<style type="text/css">
div dl
{
margin:0;
padding:0;
font-size:14px;
}
#divMain
{
width:500px;
background-color:#22477A;
margin:0 auto;
margin-top:30px;
}
dl
{
width:200px;
background:#A6BCE5;
height:14px; /*和字体大小一样高*/
overflow:hidden; /*默认溢出隐藏*/
}
dt
{
cursor:pointer; /*设置手型光标*/
font-weight:bold;
color:Green;
}
.open
{
height:112px;
overflow:visible;
}
.close
{
height:14px; /*和字体大小一样高*/
overflow:hidden;
}
</style>
<script type="text/javascript">
function DisplayList() {
var dtNode = window.event.srcElement;
var dlNode = dtNode.parentNode;
var dlNodes = document.getElementsByTagName("dl");
for (var i = 0; i < dlNodes.length; i++) {
if (dlNodes[i] == dlNode) { //判断是否是当前点击的dl
if (dlNodes[i].className == "open") {
dlNodes[i].className = "close";
}
else {
dlNodes[i].className = "open";
}
}
else {
dlNodes[i].className = "close";
}
}
}
</script>
</head>
<body>
<div id="divMain">
<dl>
<dt onclick="DisplayList()">
球星列表1
<https://img.qb5200.com/download-x/dt>
<dd>罗纳尔多<https://img.qb5200.com/download-x/dd>
<dd>贝克汉姆<https://img.qb5200.com/download-x/dd>
<dd>齐达内<https://img.qb5200.com/download-x/dd>
<dd>内马尔<https://img.qb5200.com/download-x/dd>
<dd>巴蒂斯图塔<https://img.qb5200.com/download-x/dd>
<dd>梅西<https://img.qb5200.com/download-x/dd>
<https://img.qb5200.com/download-x/dl>
<br />
<dl>
<dt onclick="DisplayList()">
球星列表2
<https://img.qb5200.com/download-x/dt>
<dd>罗纳尔多<https://img.qb5200.com/download-x/dd>
<dd>贝克汉姆<https://img.qb5200.com/download-x/dd>
<dd>齐达内<https://img.qb5200.com/download-x/dd>
<dd>内马尔<https://img.qb5200.com/download-x/dd>
<dd>巴蒂斯图塔<https://img.qb5200.com/download-x/dd>
<dd>梅西<https://img.qb5200.com/download-x/dd>
<https://img.qb5200.com/download-x/dl>
<br />
<dl>
<dt onclick="DisplayList()">
球星列表3
<https://img.qb5200.com/download-x/dt>
<dd>罗纳尔多<https://img.qb5200.com/download-x/dd>
<dd>贝克汉姆<https://img.qb5200.com/download-x/dd>
<dd>齐达内<https://img.qb5200.com/download-x/dd>
<dd>内马尔<https://img.qb5200.com/download-x/dd>
<dd>巴蒂斯图塔<https://img.qb5200.com/download-x/dd>
<dd>梅西<https://img.qb5200.com/download-x/dd>
<https://img.qb5200.com/download-x/dl>
<br />
<dl>
<dt onclick="DisplayList()">
球星列表4
<https://img.qb5200.com/download-x/dt>
<dd>罗纳尔多<https://img.qb5200.com/download-x/dd>
<dd>贝克汉姆<https://img.qb5200.com/download-x/dd>
<dd>齐达内<https://img.qb5200.com/download-x/dd>
<dd>内马尔<https://img.qb5200.com/download-x/dd>
<dd>巴蒂斯图塔<https://img.qb5200.com/download-x/dd>
<dd>梅西<https://img.qb5200.com/download-x/dd>
<https://img.qb5200.com/download-x/dl>
<br />
<dl>
<dt onclick="DisplayList()">
球星列表5
<https://img.qb5200.com/download-x/dt>
<dd>罗纳尔多<https://img.qb5200.com/download-x/dd>
<dd>贝克汉姆<https://img.qb5200.com/download-x/dd>
<dd>齐达内<https://img.qb5200.com/download-x/dd>
<dd>内马尔<https://img.qb5200.com/download-x/dd>
<dd>巴蒂斯图塔<https://img.qb5200.com/download-x/dd>
<dd>梅西<https://img.qb5200.com/download-x/dd>
<https://img.qb5200.com/download-x/dl>
<br />
<dl>
<dt onclick="DisplayList()">
球星列表6
<https://img.qb5200.com/download-x/dt>
<dd>罗纳尔多<https://img.qb5200.com/download-x/dd>
<dd>贝克汉姆<https://img.qb5200.com/download-x/dd>
<dd>齐达内<https://img.qb5200.com/download-x/dd>
<dd>内马尔<https://img.qb5200.com/download-x/dd>
<dd>巴蒂斯图塔<https://img.qb5200.com/download-x/dd>
<dd>梅西<https://img.qb5200.com/download-x/dd>
<https://img.qb5200.com/download-x/dl>
</div>
</body>
</html>
希望本文所述对大家的javascript程序设计有所帮助。
