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();
                    }
                }
            }
        };