JavaScrip——练习(做悬浮框再进一步：悬浮窗后缀悬浮窗—

JavaScrip——练习(做悬浮框再进一步：悬浮窗后缀悬浮窗——用this.className)

对悬浮窗进一步改进：

用this.className

可以省略script

<!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>无标题文档</title>
<style type="text/css">
*{
    margin:0px;
    padding:0px;
    }
.aa
{
    background-color:#FF0;
    
    height: 40px;
     100px;
    top: 60px;
    left: 100px;
    position: absolute;
    overflow: hidden;
    text-align: center;
    line-height:40px;
    }
    .aaa
{
    background-color:red;
    
    height: 40px;
     100px;
    top: 60px;
    left: 100px;
    position: absolute;
    overflow:visible;
    text-align: center;
    line-height:40px;
    }
#bb{
    
    height:120px;
    100px;
    top:40px;
    left:0px;
    position:absolute;
    
    
    
    }
table{
    
    height:120px;
    100px;
    text-align:center;
    vertical-align:middle;
}
.tiyu
{
    height:40px;
    100px;
    position:absolute;
    overflow:hidden;
    left:0px;
    top:0px;
    }
.zuqiu
{
    height:40px;
    100px;
    position:absolute;
    overflow:visible;
    left:0px;
    top:0px;
    }
#zuqiu
{
    height:40px;
    100px;
    position:absolute;
    left:100px;
    top:0px;
    background-color:#C63;
    }    
.yule
{
    height:40px;
    100px;
    position:absolute;
    overflow:hidden;
    left:0px;
    top:40px;
    }
    .bagua
{
    height:40px;
    100px;
    position:absolute;
    overflow:visible;
    left:0px;
    top:40px;
    }
#bagua
{
    height:40px;
    100px;
    position:absolute;
    left:100px;
    top:0px;
    background-color:#C63;
    }
.guoji
{
    height:40px;
    100px;
    position:absolute;
    overflow:hidden;
    left:0px;
    top:80px;
    }
.junshi
{
    height:40px;
    100px;
    position:absolute;
    overflow:visible;
    left:0px;
    top:80px;
    }
#junshi
{
    height:40px;
    100px;
    position:absolute;
    left:100px;
    top:0px;
    background-color:#C63;
    }        
</style>
</head>

<body>
<div class="aa" onmousemove="this.className='aaa'" onmouseout="this.className='aa'">新闻动态
<div id="bb">
<table cellpadding="0" cellspacing="0">

<tr bgcolor="#0000FF">

<td height="40" width="100">
<div class="tiyu" onmouseover="this.className='zuqiu'" onmouseout="this.className='tiyu'">体育
<div id="zuqiu">足球</div></div></td>

</tr>

<tr bgcolor="#FFFF00">
<td height="40" width="100">
<div class="yule" onmousemove="this.className='bagua'" onmouseout="this.className='yule'">娱乐
<div id="bagua">八卦</div></div></td>

</tr>

<tr bgcolor="#00FFFF">
<td height="40" width="100">
<div class="guoji" onmouseover="this.className='junshi'" onmouseout="this.className='guoji'">国际新闻
<div id="junshi">军事</div></div></td>
</tr>
</table>

</div></div>

</body>
</html>

结果是一样的：

默认时

鼠标在新闻动态上面时

鼠标在体育上面时：

鼠标在娱乐上面时：

鼠标在国际新闻上面时：