js控制table合并具体实现

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>