js實現table表格相同內容按需合並

uniteTdCells(tableId) {
  var table = document.getElementById(tableId);
  for (let i = 0; i < table.rows.length; i++) {
    for (let c = 0; c < table.rows[i].cells.length; c++) {
      if (c == 0 || c == 1) { //選擇要合並的列序數，去掉默認全部合並
        for (let j = i + 1; j < table.rows.length; j++) {
          let cell1 = table.rows[i].cells[c].innerHTML;
          let cell2 = table.rows[j].cells[c].innerHTML;
          if (cell1 == cell2) { 
            table.rows[j].cells[c].style.display = 'none';
            table.rows[j].cells[c].style.verticalAlign = 'middle';
            table.rows[i].cells[c].rowSpan++;
          } else {
            table.rows[j].cells[c].style.verticalAlign = 'middle'; //合並后剩余項內容自動居中
            break;
          };
        }
      }
    }
  }
}；
希望能幫到有需要的人；