两个层切换可以 但三个层就不能切换了 为什么?
代码是:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>无标题文档</title>
<style type="text/css">
#big{width:250px; height:150px; border:1px solid #CCCCCC; background:#DDDDDD;}
#nav1,#nav2{width:80px; height:25px; background:#999999; line-height:25px; vertical-align:middle; font-size:12px; text-align:center; float:left; margin-left:2px;}#cont1,#cont2{clear:left;}
</style>
<script language="javascript" type="text/javascript">
function cont(v)
{
return document.getElementById("cont"+v);
}
function show(i)
{for(var j=1;j<=2;j++)
{cont(j).style.display = 'none';
}
cont(i).style.display = 'block';
}</script>
</head>
<body>
<div id="big">
<div id="nav1" onClick="show(1)">导航1</div>
<div id="nav2" onClick="show(2)">导航2</div>
<div id="nav2" onClick="show(3)">导航3</div>
<div id="cont1">内容1</div>
<div id="cont2" style="display:none;">内容2</div>
<div id="cont2" style="display:none;">内容3</div>
</div>
</body>
</html>
代码是:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>无标题文档</title>
<style type="text/css">
#big{width:250px; height:150px; border:1px solid #CCCCCC; background:#DDDDDD;}
#nav1,#nav2{width:80px; height:25px; background:#999999; line-height:25px; vertical-align:middle; font-size:12px; text-align:center; float:left; margin-left:2px;}#cont1,#cont2{clear:left;}
</style>
<script language="javascript" type="text/javascript">
function cont(v)
{
return document.getElementById("cont"+v);
}
function show(i)
{for(var j=1;j<=2;j++)
{cont(j).style.display = 'none';
}
cont(i).style.display = 'block';
}</script>
</head>
<body>
<div id="big">
<div id="nav1" onClick="show(1)">导航1</div>
<div id="nav2" onClick="show(2)">导航2</div>
<div id="nav2" onClick="show(3)">导航3</div>
<div id="cont1">内容1</div>
<div id="cont2" style="display:none;">内容2</div>
<div id="cont2" style="display:none;">内容3</div>
</div>
</body>
</html>
是这样
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>无标题文档</title>
<style type="text/css">
#big{width:250px; height:150px; border:1px solid #CCCCCC; background:#DDDDDD;}
#nav1,#nav2{width:80px; height:25px; background:#999999; line-height:25px; vertical-align:middle; font-size:12px; text-align:center; float:left; margin-left:2px;}#cont1,#cont2{clear:left;}
</style>
<script language="javascript" type="text/javascript">
function cont(v)
{
return document.getElementById("cont"+v);
}
function show(i)
{for(var j=1;j<=2;j++)
{cont(j).style.display = 'none';
}
cont(i).style.display = 'block';
}</script>
</head>
<body>
<div id="big">
<div id="nav1" onClick="show(1)">导航1</div>
<div id="nav2" onClick="show(2)">导航2</div>
<div id="nav3" onClick="show(3)">导航3</div>
<div id="cont1">内容1</div>
<div id="cont2" style="display:none;">内容2</div>
<div id="cont3" style="display:none;">内容3</div>
</div>
</body>
</html>
<head>
<title> 无标题文档 </title>
<style type="text/css">
#big{width:250px; height:150px; border:1px solid #CCCCCC; background:#DDDDDD;}
#nav1,#nav2,#nav3{width:80px; height:25px; background:#999999; line-height:25px; vertical-align:middle; font-size:12px; text-align:center; float:left; margin-left:2px;}#cont1,#cont2{clear:left;}
</style>
<script language="javascript" type="text/javascript">
function cont(v)
{
return document.getElementById("cont"+v);
}
function show(i)
{for(var j=1;j <=3;j++)
{cont(j).style.display = 'none';
}
cont(i).style.display = 'block';
} </script>
</head>
<body>
<div id="big">
<div id="nav1" onClick="show(1)"> 导航1 </div>
<div id="nav2" onClick="show(2)"> 导航2 </div>
<div id="nav3" onClick="show(3)"> 导航3 </div>
<div id="cont1"> 内容1 </div>
<div id="cont2" style="display:none;"> 内容2 </div>
<div id="cont3" style="display:none;"> 内容3 </div>
</div>
</body>
</html>
改之前的代码只设置了1,2两个层,没取到3的值
下面是123都切换的了<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> 无标题文档 </title>
<style type="text/css">
#big{width:250px; height:150px; border:1px solid #CCCCCC; background:#DDDDDD;}
#nav1,#nav2,#nav3{width:80px; height:25px; background:#999999; line-height:25px; vertical-align:middle; font-size:12px; text-align:center; float:left; margin-left:2px;}#cont1,#cont2{clear:left;}
</style>
<script language="javascript" type="text/javascript">
function cont(v)
{
return document.getElementById("cont"+v);
}
function show(i) {
for(var j=1;j <=3;j++) {
cont(j).style.display = 'none';
}
cont(i).style.display = 'block';
}
</script>
</head>
<body>
<div id="big">
<div id="nav1" onClick="show(1)"> 导航1 </div>
<div id="nav2" onClick="show(2)"> 导航2 </div>
<div id="nav3" onClick="show(3)"> 导航3 </div>
<div id="cont1"> 内容1 </div>
<div id="cont2" style="display:none;"> 内容2 </div>
<div id="cont3" style="display:none;"> 内容3 </div>
</div>
</body>
</html>
<!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>
<title>未命名頁面</title>
<style type="text/css">
.title {width:250px; height:150px; border: 1px olid #CCCCCC; background-color: #eeeeee;}
.navShow {width:80px; height:25px; background-color: #DDDDDD; text-align: center; vertical-align: middle; font-size: 15px; cursor: default; line-height: 25px;}
.navHide {width:80px; height:25px; background-color: #999999; text-align: center; vertical-align: middle; font-size: 12px; cursor: hand; line-height: 25px;}
.content {width:250px; height:125px; background-color:#DDDDDD; font-size:13px; clear:both;}
</style>
<script type="text/javascript">
<!--
function nav(v)
{
return document.getElementById('nav' + v);
}
function cont(v)
{
return document.getElementById('cont' + v);
}
function Show(v)
{
for (var i = 1; i < 4; i++)
{
if (i == v)
{
nav(i).className = 'navShow';
cont(i).style.display = 'block';
}
else
{
nav(i).className = 'navHide';
cont(i).style.display = 'none';
}
}
}
//-->
</script>
</head>
<body>
<form>
<div class="title">
<div id="nav1" class="navShow" style="float:left" onclick="Show(1)">導航1</div>
<div id="nav2" class="navHide" style="float:left; margin-left:2px" onclick="Show(2)">導航2</div>
<div id="nav3" class="navHide" style="margin-left:2px" onclick="Show(3)">導航3</div>
<div id="cont1" class="content">內容1</div>
<div id="cont2" class="content" style="display:none">內容2</div>
<div id="cont3" class="content" style="display:none">內容3</div>
</div>
</form>
</body>
</html>