js动态的合并table的单元格
2017-12-03 15:17
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<!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=utf-8" /> <title>表格相同内容合并</title> </head> <body> 合并前: <table width="400" border="1"> <tbody> <tr> <th>c1</th> <th>c2</th> <th>c3</th> <th>c4</th> <th>c5</th> <th>c6</th> </tr> <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>3</td> <td>4</td> <td>5</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>4</td> <td>5</td> <td>6</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> </tbody> </table> <br /> 合并后: <br /> <table width="400" border="1" id="table1"> <tbody> <tr> <th>c1</th> <th>c2</th> <th>c3</th> <th>c4</th> <th>c5</th> <th>c6</th> </tr> <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>3</td> <td>4</td> <td>5</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>4</td> <td>5</td> <td>6</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> </tbody> </table> <script type="text/javascript"> //多级次动态合并表格行 function checkArray(arr1,arr2){ for (var i = 0; i < arr1.length; i++) { if (arr1[i].innerText===arr2[i].innerText) { }else{ return false; } } return true; } function dynamicMergeTableRow(tableId){ var tb = document.getElementById(tableId); var obj1; var obj2; var objtemp1 = []; var objtemp2 = []; var rowCount = tb.rows.length; console.info(rowCount); var colCount = tb.rows[0].cells.length; console.info(rowCount); var colLength = 4; //命名(表头除外) for (var i = 1; i < rowCount; i++) { for (var j = 0; j < colCount; j++) { tb.rows[i].cells[j].id = "tb_" + i.toString() + "_" + j.toString(); } } //从后往前检查,进行逐列检查合并,开始列为colLength-1 for (var col = colLength -1; col >= 0; col--) { //当col>0时有前方的单元格 if (col > 0) { //objtemp1为obj1左侧所有单元格集合,初始objtemp1及obj1均从第二行开始(tb_1_) for (var l = 0; l < col; l++) { objtemp1[l] = document.getElementById("tb_1_" + l.toString()); } } obj1 = document.getElementById("tb_1_" + col.toString()); //obj2为obj1下方单元格,obj1从第二行开始,则obj2从第三行开始,遍历以row=2为起始值 for (var row = 2; row < rowCount; row++) { //同obj1及objtemp1,col>0:即有前方单元格,此时有objtemp2 if (col > 0) { for (var l = 0; l < col; l++) { objtemp2[l] = document.getElementById("tb_" + row.toString() +"_"+ l.toString()); } } obj2 = document.getElementById("tb_" + row.toString() +"_"+ col.toString()); //定义完obj1/obj2/objtemp1/objtemp2后,开始合并 //第一层判断:当obj1的值等于obj2时,即同一列的相邻单元格值相同 if (obj1.innerText == obj2.innerText) { //第二层判断:obj1/obj2所在列前方还有其他列:即col>0(此步判断为单元格合并的依赖性提供支持) if (col > 0) { //第三层判断:obj1/obj2所在列前方还有其他列,且objtemp1,objtemp2值完全相同,可以合并 if (checkArray(objtemp1,objtemp2)) { obj1.rowSpan++; obj2.parentNode.removeChild(obj2); } //第三层判断:obj1/obj2所在列前方还有其他列,且objtemp1,objtemp2值不同,不可合并,并重新对obj1/objtemp1赋值,令其等于原来的obj2/objtemp2 else{ obj1 = document.getElementById("tb_" + row.toString() +"_"+ col.toString()); for (var l = 0; l < col; l++) { objtemp1[l] = document.getElementById("tb_" + row.toString() +"_"+ l.toString()); } } } //第二层判断:obj1/obj2所在列为首列,直接合并 else{ obj1.rowSpan++; obj2.parentNode.removeChild(obj2); } } //第一层判断:当obj1的值不等于obj2时,即同一列的相邻单元格值不相,此时重新对obj1/objtemp1赋值,令其等于原来的obj2/objtemp2 else{ obj1 = document.getElementById("tb_" + row.toString() +"_"+ col.toString()); for (var l = 0; l < col; l++) { objtemp1[l] = document.getElementById("tb_" + row.toString() +"_"+ l.toString()); } } } objtemp1 = []; objtemp2 = []; } } dynamicMergeTableRow('table1'); </script> </body> </html>
原文章:
http://blog.csdn.net/galeno1994/article/details/73800955
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