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Javascript通过overflow控制列表闭合与展开的方法

永远爱好写程序 人气:0

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。

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