| 行：<tr> | 列：<td> | 表头：<th> |
|---|
合并单元格
| colspan 列合并 | rowspan 行合并 |
|---|
实例：
<!DOCTYPE html>
<html>
<head>
<title>html表格</title>
</head>
<body>
<table border="1">
<tr><th>1</th><th>2</th><th>3</th><th>4</th></tr>
<tr>
<td colspan="2">1-1</td>
<td>1-3</td>
<td>1-4</td>
</tr>
<tr>
<td>2-1</td>
<td>2-2</td>
<td>2-3</td>
<td>2-4</td>
</tr>
<tr>
<td colspan="3" >3-1</td>
<td rowspan="2">3-4-4</td>
</tr>
<tr>
<td>4-1</td>
<td>4-2</td>
<td>4-3</td>
</tr>
</table>
</body>
</html>
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