本文介绍了一种使用HTML和CSS实现表格滚动时保持表头固定的样式方法。通过设置特定的CSS样式，可以实现在水平或垂直滚动表格内容时，表头始终保持可见的效果。此方法适用于需要展示大量数据并保持数据条目清晰对应性的应用场景。
<html>
<head>
<mce:style type="text/css"><!--
body,table, td, a{
font-size:12px;
text-align:center;
}
/*重点：固定行头样式*/
.scrollRowThead{
position: relative;
left: expression(this.parentElement.parentElement.parentElement.parentElement.scrollLeft);
z-index:0;
}
/*重点：固定表头样式*/
.scrollColThead{
position: relative;
top: expression(this.parentElement.parentElement.parentElement.scrollTop);
z-index:2;
}
/*行列交叉的地方*/
.scrollCR{
z-index:3;
}
/*div外框*/
.scrollDiv{
height:200px;
clear: both;
border: 1px solid #EEEEEE;
OVERFLOW: scroll;
width: 100%;
}
/*行头居中*/
.scrollColThead td,.scrollColThead th{
text-align: center ;
}
/*行头列头背景*/
.scrollRowThead,.scrollColThead td,.scrollColThead th{
background-color:EEEEEE;
}
/*表格的线*/
.scrolltable{
border-bottom:1px solid #CCCCCC;
border-right:1px solid #CCCCCC;
}
/*单元格的线等*/
.scrolltable td,.scrollTable th{
border-left: 1px solid #CCCCCC;
border-top: 1px solid #CCCCCC;
padding: 5px;
}
--></mce:style><style type="text/css" mce_bogus="1">body,table, td, a{
font-size:12px;
text-align:center;
}
/*重点：固定行头样式*/
.scrollRowThead{
position: relative;
left: expression(this.parentElement.parentElement.parentElement.parentElement.scrollLeft);
z-index:0;
}
/*重点：固定表头样式*/
.scrollColThead{
position: relative;
top: expression(this.parentElement.parentElement.parentElement.scrollTop);
z-index:2;
}
/*行列交叉的地方*/
.scrollCR{
z-index:3;
}
/*div外框*/
.scrollDiv{
height:200px;
clear: both;
border: 1px solid #EEEEEE;
OVERFLOW: scroll;
width: 100%;
}
/*行头居中*/
.scrollColThead td,.scrollColThead th{
text-align: center ;
}
/*行头列头背景*/
.scrollRowThead,.scrollColThead td,.scrollColThead th{
background-color:EEEEEE;
}
/*表格的线*/
.scrolltable{
border-bottom:1px solid #CCCCCC;
border-right:1px solid #CCCCCC;
}
/*单元格的线等*/
.scrolltable td,.scrollTable th{
border-left: 1px solid #CCCCCC;
border-top: 1px solid #CCCCCC;
padding: 5px;
}</style>
</head>
<body>
<div id="scrollDiv" class="scrollDiv" >
<table border="0" cellpadding="3" cellspacing="0" width="100%" class="scrollTable">
<tr class="scrollColThead" >
<th class="scrollRowThead scrollCR" > </th>
<th colspan="2">列头</th>
<th colspan="10">列头</th>
</tr>
<tr class="scrollColThead">
<th class="scrollRowThead scrollCR" nowrap="nowrap" width="120">序号</th>
<th nowrap="nowrap" width="120">媒体名称</th>
<th nowrap="nowrap" width="120">版面</th>
<th nowrap="nowrap" width="120">行业1</th>
<th nowrap="nowrap" width="120">行业1</th>
<th nowrap="nowrap" width="120">行业1</th>
<th nowrap="nowrap" width="120">行业1</th>
<th nowrap="nowrap" width="120">行业1</th>
<th nowrap="nowrap" width="120">行业1</th>
<th nowrap="nowrap" width="120">行业1</th>
<th nowrap="nowrap" width="120">行业1</th>
<th nowrap="nowrap" width="120">行业1</th>
<th nowrap="nowrap" width="150">行业1</th>
</tr>
<tr>
<td class="scrollRowThead"><input type="checkbox" name="checkbox" value="checkbox">a</td>
<td>单元格2</td>
<td>单元格3</td>
<td>单元格4</td>
<td>单元</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="scrollRowThead"><input type="checkbox" name="checkbox2" value="checkbox">b</td>
<td>单元格2</td>
<td>单元格3</td>
<td>单元格4</td>
<td>单元格5</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="scrollRowThead"><input type="checkbox" name="checkbox3" value="checkbox">1</td>
<td>单元格2</td>
<td>单元格3</td>
<td>单元格4</td>
<td>单元格5</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="scrollRowThead"><input type="checkbox" name="checkbox4" value="checkbox">2</td>
<td>单元格2</td>
<td>单元格3</td>
<td>单元格4</td>
<td>单元格5</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="scrollRowThead"><input type="checkbox" name="checkbox5" value="checkbox">3</td>
<td>单元格2</td>
<td>单元格3</td>
<td>单元格4</td>
<td>单元格5</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="scrollRowThead"><input type="checkbox" name="checkbox6" value="checkbox">4</td>
<td>单元格2</td>
<td>单元格3</td>
<td>单元格4</td>
<td>单元格5</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td class="scrollRowThead"><input type="checkbox" name="checkbox7" value="checkbox">5</td>
<td>单元格2</td>
<td>单元格3</td>
<td>单元格4</td>
<td>单元格5</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
</table>
</div>
</body>
</html>
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