<html>
<head>
<meta
http-equiv="Content-Type" content="text/html;
charset=gb2312">
<title>鍚堝苟琛ㄦ牸</title>
<script>
///////////////////////////////////////////////
// 鍔熻兘锛氬悎骞惰〃鏍?
//
鍙傛暟锛歵b锛嶏紞闇€瑕佸悎骞剁殑琛ㄦ牸ID
//
鍙傛暟锛歝olLength锛嶏紞闇€瑕佸鍓嶅嚑鍒楄繘琛屽悎骞讹紝姣斿锛?
//
鎯冲悎骞跺墠涓ゅ垪锛屽悗闈㈢殑鏁版嵁鍒楀拷鐣ュ悎骞讹紝colLength搴斾负2
// 缂虹渷琛ㄧず瀵瑰叏閮ㄥ垪鍚堝苟
// data: 2005.11.6
///////////////////////////////////////////////
function uniteTable(tb,objCol){
// 妫€鏌ヨ〃鏍兼槸鍚﹁鏁?
if
(!checkTable(tb)) return;
var i=0;
var
j=0;
var rowCount=tb.rows.length;
// 琛屾暟
var
colCount=tb.rows[0].cells.length; //
鍒楁暟
var
obj1=null;
var
obj2=null;
//
涓烘瘡涓崟鍏冩牸鍛藉悕
for
(i=0;i<rowCount;i++){
for
(j=0;j<colCount;j++){
tb.rows[i].cells[j].id="tb__" +
i.toString() + "_" +
j.toString();
}
}
//
閫愬垪妫€鏌ュ悎骞?
for
(t=0;t<objCol.length;t++)
{
i=objCol[t];
obj1=document.getElementById("tb__0_"+i.toString())
for
(j=1;j<rowCount;j++)
{
obj2=document.getElementById("tb__"+j.toString()+"_"+i.toString());
if (obj1.innerHTML ==
obj2.innerHTML)//淇敼浜嗗師鏉ョ殑innerText
{
obj1.rowSpan++;
obj2.parentNode.removeChild(obj2);
}
else
{
obj1=document.getElementById("tb__"+j.toString()+"_"+i.toString());
}
}
}
}
/////////////////////////////////////////
// 鍔熻兘锛氭鏌ヨ〃鏍兼槸鍚﹁鏁?
//
鍙傛暟锛歵b锛嶏紞闇€瑕佹鏌ョ殑琛ㄦ牸ID
//
data: 2005.11.6
/////////////////////////////////////////
function checkTable(tb){
if (tb.rows.length==0) return
false;
if
(tb.rows[0].cells.length==0) return
false;
for (var
i=0;i<tb.rows.length;i++){
if
(tb.rows[0].cells.length !=
tb.rows[i].cells.length) return
false;
}
return true;
}
</script>
</head>
<body>
<table
width="400" border="1"
id="table1">
<tr>
<td>a</td>
<td>for</td>
<td>100</td>
<td>200</td>
</tr>
<tr>
<td>a</td>
<td>for</td>
<td>150</td>
<td>230</td>
</tr>
<tr>
<td>a</td>
<td>if</td>
<td>150</td>
<td>200</td>
</tr>
<tr>
<td>a</td>
<td>if</td>
<td>300</td>
<td>240</td>
</tr>
<tr>
<td>a</td>
<td>if</td>
<td>320</td>
<td>240</td>
</tr>
</table>
<br>
<input
type="button" value="鍚堝苟琛ㄦ牸"
onClick="uniteTable(table1,Array(0,1,3))">
</body>
原文：http://www.cnblogs.com/tomcattd/p/3626215.html