table合并相同单元格的问题 谁能解决，感激不尽，都来看看啊

[f8932809]

<script type="text/javascript"> 
   function mc(tableId, startRow, endRow, col) { 
	var tb = document.getElementById(tableId); 
	if (col >= tb.rows[2].cells.length) 
	{ 
	    return; 
	} 
   if (col == 0) 
	{ 
	    endRow = tb.rows.length-1; 
	} 
   for (var i = startRow; i < endRow; i++) 
       { 
           if (tb.rows[startRow].cells[col].innerHTML == tb.rows[i + 1].cells[0].innerHTML) 
		{ 
			tb.rows[i + 1].removeChild(tb.rows[i + 1].cells[0]); 
			tb.rows[startRow].cells[col].rowSpan = (tb.rows[startRow].cells[col].rowSpan | 0) + 1; 

			if (i == endRow - 1 && startRow != endRow)
			    { 
				mc(tableId, startRow, endRow, col + 1); 
			    } 
       		 } 
	   else { 
			    mc(tableId, startRow, i + 0, col + 1); 
			    startRow = i + 1; 
                 } 
	} 
} 
</script>

HTML代码

<table width="400" border="1" id="table2"> 
<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>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>

调用：mc("table2",0,0,0)

合并前：

合并后

发现问题是： if (tb.rows[startRow].cells[col].innerHTML == tb.rows[i + 1].cells[0].innerHTML)
这句在递归回调时，判断列出现了问题，但我现在有些搞不懂，为什么要用 tb.rows[i + 1].cells[0].innerHTML 判断
而不是 tb.rows[i + 1].cells[col].innerHTML 为什么cells[0]始终为0 ?

[Hello World,]

因为前面的列已经合并掉了，不见了，所以每次只找0开始的列就好了

[Hello World,]

<script type="text/javascript">
	function mc(tableId, startRow, endRow, col) {
		var tb = document.getElementById(tableId);
		if (col >= tb.rows[0].cells.length-0) {
			return;
		}
		if (col == 0) {
			endRow = tb.rows.length - 1;
		}
		for (var i = startRow; i < endRow; i++){
			var subCol = tb.rows[0].cells.length - tb.rows[startRow].cells.length;
			if (tb.rows[startRow].cells[col-subCol].innerHTML == tb.rows[i + 1].cells[0].innerHTML) {
				tb.rows[i + 1].removeChild(tb.rows[i + 1].cells[0]);
				tb.rows[startRow].cells[col-subCol].rowSpan = (tb.rows[startRow].cells[col-subCol].rowSpan | 0) + 1;
				if (i == endRow - 1 && startRow != endRow) {
					mc(tableId, startRow, endRow, col + 1);
				}
			} else {
				mc(tableId, startRow, i + 0, col + 1);
				startRow = i + 1;
			}
		}
	}
	mc('table1', 0, 0, 0); 
</script>

[f8932809]

引用 1 楼 apollokk 的回复:

因为前面的列已经合并掉了，不见了，所以每次只找0开始的列就好了

确实是，你真是帮了我的大忙了 ，太谢谢你了