发这个贴的原因，是因为 是因为 是因为啥来着，忘了 那就是因为你，因为你 。

代码

/**
 * divId:插入表格的divId
 * listTitle:插入表格标题
 * listData:插入表格数据
 */
function addTable(divId, listTitle, listData,n) {
    var num = parseInt(Math.random()*100);
    var tableDivId = "table"+num.toString();
    var div = document.getElementById(divId);
    div.innerHTML = "";
    var strTitle = "";
    var scendTitle = "";
    var strDate = "";
    for (var i = 0; i < listTitle.length; i++) {
        if (listTitle[i].indexOf(":") != -1) {
            var strs = listTitle[i].split(":");
            strTitle += '<th>' + strs[0] + '</th>';
        } else {
            strTitle += '<th>' + listTitle[i] + '</th>';
        }
    }
    for (var i = 0; i < listTitle.length; i++) {
        if (listTitle[i].indexOf(":") != -1) {
            var strs = listTitle[i].split(":");
            scendTitle += '<th>' + strs[1] + '</th>';
        } else {
            scendTitle += '<th>' + listTitle[i] + '</th>';
        }
    }
    /**alert(listData.length);*/
    for (i = 0; i < listData.length; i++) {
        strDate += '<tr>';
        for (j = 0; j < listData[0].length; j++) {
            strDate += '<td>' + listData[i][j] + '</td>';
        }
        strDate += '</tr>';
    }
    var table = '<table class="t1" id='+tableDivId+' width="100%"  cellspacing="0" cellpadding="0" ><thead>' + '<tr>' + strTitle + '</tr><tr>' + scendTitle + '</tr></thead><tbody>' + strDate + '</tbody></table>';
    div.innerHTML = table;
    uniteTdCells(tableDivId,n);
    uniteTdRells(tableDivId);
}
/*
 * 合并行
 * tableId:需要操作表格的Id
 */
function uniteTdCells(tableDivId,n) {
    var table = document.getElementById(tableDivId);
    var nLeftCol = n;
    for (var r = 0; r < table.rows.length; r++) {
        for (var c = 0; c < table.rows[r].cells.length; c++) {
            /**选择要合并的列序数，去掉默认全部合并*/
            if (r >= 2 && c >= nLeftCol) {
                continue;
            }
            for (j = r + 1; j < table.rows.length; j++) {
                var cell1 = table.rows[r].cells[c].innerHTML;
                var cell2 = table.rows[j].cells[c].innerHTML;
                if (cell1 == cell2) {
                    table.rows[j].cells[c].style.display = 'none';
                    table.rows[r].cells[c].rowSpan++;
                } else {
                    break;
                }
            }
        }
    }
}

/*
 *合并列
 *tableId：操作表格ID
 */
function uniteTdRells(tableDivId) {
    var table = document.getElementById(tableDivId);
    for (var c = 0; c < table.rows[0].cells.length; c++) {
        for (j = c + 1; j < table.rows[0].cells.length; j++) {
            var strOne = table.rows[0].cells[c].innerHTML;
            var strTwo = table.rows[0].cells[j].innerHTML;
            if (strOne == strTwo) {
                table.rows[0].cells[j].style.display = 'none';
                table.rows[0].cells[c].colSpan++;
            }
        }
    }
}



function uniteTdCellsOne( n) {
    var table = document.getElementById(tableId);
    var nLeftCol = n;
    for (var r = 0; r < table.rows.length; r++) {
        for (var c = 7; c < table.rows[r].cells.length; c++) {
            /**                 /**选择要合并的列序数，去掉默认全部合并*/
            /**                 if (r >= 2 && c >= nLeftCol)*/
            /**                 {*/
            /**                     continue; */
            /**                 }*/
            for (j = r + 1; j < table.rows.length; j++) {
                var cell1 = table.rows[r].cells[c].innerHTML;
                var cell2 = table.rows[j].cells[c].innerHTML;
                if (cell1 == cell2) {
                    table.rows[j].cells[c].style.display = 'none';
                    table.rows[r].cells[c].rowSpan++;
                } else {
                    break;
                }
            }
        }
    }
}