功能介绍：要实现一个div的显示与隐藏，方法有很多，这里记录下一个简单的js效果，用js来控制div的显示与隐藏，示例代码如下：
<!doctype html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf8" />
<title>js显示隐藏层</title>
<script language="JavaScript" type="text/JavaScript">
function showdiv(targetid,objN){
var target=document.getElementById(targetid);
var clicktext=document.getElementById(objN)
if (target.style.display=="block"){
target.style.display="none";
clicktext.innerText="Open DIV";
} else {
target.style.display="block";
clicktext.innerText='Close DIV';
}
}
</script>
<style type="text/css">
body { font: normal 14px "宋体" }
a { text-decoration: none; display: block;background-color:#ABCDEF;height: 20px;}
a:hover{background-color: #CCC;}
#showtext { cursor: hand; cursor:pointer;}
#showtext2 { cursor: hand; cursor:pointer;}
#contentid { margin-top: 10px; width:100%; border: 1px solid #CCC; background: #F1F1F1; padding: 15px; }
#contentid2 { margin-top: 10px; width: 470px; border: 1px solid #CCC; background: #F1F1F1; padding: 15px; }
.none { display: none; }
</style>
</head>
<body>
<a id="showtext" onClick="showdiv('contentid','showtext')">Open DIV1</a>
<div id="contentid" class="none">打开的内容</div>
<br/><br/>
<a id="showtext2" onClick="showdiv('contentid2','showtext2')">Open DIV2</a>
<div id="contentid2" class="none">1<br />
</div>
</body>
</html>另外一个简单的展开与伸缩效果：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>js展示与收起效果</title>
<style>
*{margin: 0;padding: 0;}
#content{height:auto;width: 500px;margin:0 auto;font-size: 14px;padding:5px;
background-color: #8c8c8c;}
.slide{margin:0 auto;padding:0;width: 500px; border-top: solid 2px grey;}
.more_slide{background-color:#8c8c8c;text-align:center;width: 100px;margin-top:0 auto;text-decoration: none;height:30px;padding:10px 0 0 0;display:block;}
</style>
<script type="text/javascript">
function showdiv()
{
document.getElementById('hide').style.display="block";
document.getElementById('more').innerHTML="收起";
document.getElementById('more').href="javascript:hidediv()";
}
function hidediv()
{
document.getElementById('hide').style.display="none";
document.getElementById('more').innerHTML="更多选项";
document.getElementById('more').href="javascript:showdiv()";
}
</script>
</head>
<body>
<div id="content">
<p>展示区域</p>
<p>新闻列表</p>
<div id="hide" style="display: none">
<p>这里是隐藏区域</p>
<p>Internet is handsome</p>
<p>today is weekend</p>
</div>
</div>
<p class="slide">
<a href="javascript:showdiv()" id="more" class="more_slide">更多选项</a>
</p>
</body>
</html>
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