js【table】合并行，合并列

eg：

         function hbh() {
             var tab = document.getElementById("tableID");
             var maxCol = 2, val, count, start, qycol = 1, valqy;  //maxCol：合并单元格作用到多少列,valqy 为区域列的内容，qycol为区域所在列的索引  

             for (var col = maxCol - 1; col >= 1; col--) {
                 count = 1;
                 val = "";
                 valqy = "";

                 for (var i = 0; i < tab.rows.length; i++) {
                     if (val == tab.rows[i].cells[col].innerHTML && valqy == tab.rows[i].cells[qycol].innerHTML) {
                         count++;
                     }
                     else {
                         if (count > 1) { //合并
                             start = i - count;
                             tab.rows[start].cells[col].rowSpan = count;
                             for (var j = start + 1; j < i; j++) {
                                 $(tab.rows[j].cells[col]).remove();
                             }
                             count = 1;
                         }

                         val = tab.rows[i].cells[col].innerHTML;
                         valqy = tab.rows[i].cells[qycol].innerHTML;
                     }
                 }

                 if (count > 1) { //合并，最后几行相同的情况下
                     start = i - count;
                     tab.rows[start].cells[col].rowSpan = count;

                     for (var j = start + 1; j < i; j++) {
                         $(tab.rows[j].cells[col]).remove();
                     }
                 }
             }
         };