效果图:
HTML代码:
<!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>表格相同内容合并</title>
</head>
<body>
合并前：
<table width="400" border="1">
<tr>
<td>a</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
</tr>
<tr>
<td>a</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>6</td>
</tr>
<tr>
<td>a</td>
<td>2</td>
<td>3</td>
<td>3</td>
<td>4</td>
<td> </td>
</tr>
<tr>
<td>b</td>
<td>3</td>
<td>4</td>
<td>6</td>
<td>7</td>
<td> </td>
</tr>
<tr>
<td>b</td>
<td>3</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td> </td>
</tr>
<tr>
<td>cc</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td> </td>
</tr>
<tr>
<td>cc</td>
<td>2</td>
<td>3</td>
<td>5</td>
<td>5</td>
<td> </td>
</tr>
<tr>
<td>d</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td> </td>
</tr>
<tr>
<td>e</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td> </td>
</tr>
</table><br />
合并后：<br />
<table width="400" border="1" id="table1">
<tr>
<td>a</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
</tr>
<tr>
<td>a</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>6</td>
</tr>
<tr>
<td>a</td>
<td>2</td>
<td>3</td>
<td>3</td>
<td>4</td>
<td> </td>
</tr>
<tr>
<td>b</td>
<td>3</td>
<td>4</td>
<td>6</td>
<td>7</td>
<td> </td>
</tr>
<tr>
<td>b</td>
<td>3</td>
<td>5</td>
<td>6</td>
<td>7</td>
<td> </td>
</tr>
<tr>
<td>cc</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td>5</td>
<td> </td>
</tr>
<tr>
<td>cc</td>
<td>2</td>
<td>3</td>
<td>5</td>
<td>5</td>
<td> </td>
</tr>
<tr>
<td>d</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td> </td>
</tr>
<tr>
<td>e</td>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
<td> </td>
</tr>
</table>
</body>
</html>
JS:
<script type="text/javascript">
///合并表格相同行的内容
///tableId：表格ID（最好是tbody，避免把表尾给合并了)
///startRow：起始行，没有标题就从0开始
///endRow：终止行，此参数是递归时检查的范围，一开始时会自动赋值为最后一行
///col：当前处理的列
function MergeCell(tableId, startRow, endRow, col) {
var tb = document.getElementById(tableId);
if (col >= tb.rows[0].cells.length) {
return;
}
//当检查第0列时检查所有行
if (col == 0) {
endRow = tb.rows.length - 1;
}
for (var i = startRow; i < endRow; i++) {
//subCol:已经合并了多少列
var subCol = tb.rows[0].cells.length - tb.rows[startRow].cells.length;
//程序是自左向右合并，所以下一行一直取第0列
if (tb.rows[startRow].cells[col - subCol].innerHTML == tb.rows[i + 1].cells[0].innerHTML) {
//如果相同则删除下一行的第0列单元格
tb.rows[i + 1].removeChild(tb.rows[i + 1].cells[0]);
//更新rowSpan属性
tb.rows[startRow].cells[col - subCol].rowSpan = (tb.rows[startRow].cells[col - subCol].rowSpan | 0) + 1;
//当循环到终止行前一行并且起始行和终止行不相同时递归(因为上面的代码已经检查了i+1行，所以此处只到endRow-1)
if (i == endRow - 1 && startRow != endRow) {
MergeCell(tableId, startRow, endRow, col + 1);
}
} else {
//起始行，终止行不变，检查下一列
MergeCell(tableId, startRow, i, col + 1);
//增加起始行
startRow = i + 1;
}
}
}
MergeCell('table1', 0, 0, 0);
</script>