# 伸缩菜单_先展开
~~~
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style type="text/css">
*{ font-family: 宋体; }
#listmenu{
width: 200px;
overflow: hidden;
background-color: #00A1D6;
border: 1px solid #1ABC9C;
}
p {
text-align: center;
cursor: pointer;
font-size: 22px;
}
#listmenu ul li{
width:200px;
height:30px;
line-height:30px;
color: #4e4545;
list-style:none;
}
</style>
<script type="text/javascript">
window.onload =pageload;
function pageload()
{
var divObj= document.getElementById("listmenu");
var ps=divObj.getElementsByTagName("p");
for(var i=0;i<ps.length;i++)
{
ps[i]=this;
ps[i].onclick=function()
{
alert(this.id);
var index= this.id+"a";
var ulObj= document.getElementById(index);
console.log(ulObj);
alert("-->"+ulObj.style.display);
if(ulObj.style.display=="none")
{
alert("展开");
ulObj.style.display="block";
}
else
{
alert("隐藏");
ulObj.style.display="none";
}
}
}
}
</script>
</head>
<body>
<div id="listmenu">
<p id="one">员工信息列表</p>
<ul id="onea">
<li>员工籍贯图表</li>
<li>员工学历图表</li>
<li>员工性别图表</li>
</ul>
<p id="two">部门信息列表</p>
<ul id="twoa">
<li>部门工种分布</li>
<li>部门成本图表</li>
</ul>
</div>
</body>
</html>
~~~
