js控制table合并具体实现

时间：2021-05-26

复制代码 代码如下:
<!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=gbk" />
<title>无标题文档 </title>
</head>

<body>
<table width="100%" border="1" cellspacing="0" cellpadding="0" id="tab">
<tr>
<td rowspan="0">张三 </td>
<td>男 </td>
<td>22 </td>
<td>数学 </td>
<td>90 </td>
</tr>
<tr>
<td rowspan="0">张三 </td>
<td>男 </td>
<td>22 </td>
<td>数学 </td>
<td>90 </td>
</tr>
<tr>
<td rowspan="0">张三 </td>
<td>女 </td>
<td>22 </td>
<td>语文 </td>
<td>70 </td>
</tr>
<tr>
<td rowspan="0">张三 </td>
<td>女 </td>
<td>22 </td>
<td>英语 </td>
<td>60 </td>
</tr>
<tr>
<td rowspan="0">李四 </td>
<td>女 </td>
<td>22 </td>
<td>数学 </td>
<td>60 </td>
</tr>
<tr>
<td rowspan="0">李四 </td>
<td>女 </td>
<td>19 </td>
<td>语文 </td>
<td>60 </td>
</tr>
<tr>
<td rowspan="0">王五 </td>
<td>男 </td>
<td>19 </td>
<td>英语 </td>
<td>60 </td>
</tr>
</table>

<script type="text/javascript">
window.onload = function(){
var tab = document.getElementById("tab");
var col =0;

megercell(tab, col);

megercell1(tab, col+1);

for(var i=0; i<tab.rows.length; i++){
// alert(tab.rows[i].cells[0].getAttribute("rowspan"));
}
};


function megercell(tab, col){
count = 1;
val = "";
for(var i=0; i<tab.rows.length; i++){
if(val == tab.rows[i].cells[col].innerHTML){
count++;
}else{
if(count > 1){
from = i - count;

tab.rows[from].cells[col].rowSpan = count;
for(var j=from+1; j<i; j++){
tab.rows[j].cells[col].style.display = "none";
}
count = 1;
}
val = tab.rows[i].cells[col].innerHTML;
}
}
}

function megercell1(tab, col){
count = 1;
val = "";
var rowspan = 0;
for(var i=0; i<tab.rows.length;){
rowspan = parseInt(tab.rows[i].cells[0].getAttribute("rowspan"));

if(rowspan)
{
for(var n = 0; n < rowspan; n++)
{
if(val == tab.rows[i].cells[col].innerHTML){
count++;
}else{
if(count > 1){
from = i - count;
tab.rows[from].cells[col].rowSpan = count;
for(var j=from+1; j<i; j++){
tab.rows[j].cells[col].style.display = "none";
}
count = 1;
}
val = tab.rows[i].cells[col].innerHTML;
}
i++;
}
if(count　> 1)
{
from = i - count;

alert(from +" "+ i +" "+ count);
tab.rows[from].cells[col].rowSpan = count;
for(var j=from+1; j<i; j++){
tab.rows[j].cells[col].style.display = "none";
}
}
count = 1;
val = "";
}
else
{
i++;
}
}
}

</script>
</body>
</html>

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