JavaScript实现表格列合并与动态生成

   
   ==================自行引入jquery等文件===================================================
   
   
   ==========================合并单元格内容====================================================
   function table_rowspan(table_id, table_colnum) {

            if (table_colnum == "even") {
                table_colnum = "2n";
            }
            else if (table_colnum == "odd") {
                table_colnum = "2n+1";
            }
            else {
                table_colnum = "" + table_colnum;
            }
            var cols = [];
            var all_row_num = $(table_id + " tr td:nth-child(1)").length;
            var all_col_num = $(table_id + " tr:nth-child(1)").children().length;
            if (table_colnum.indexOf("n") == -1) {
                cols[0] = table_colnum;
            }
            else {
                var n = 0;
                var a = table_colnum.substring(0, table_colnum.indexOf("n"));
                var b = table_colnum.substring(table_colnum.indexOf("n") + 1);
//alert("a="+a+"b="+(b==true));
                a = a ? parseInt(a) : 1;
                b = b ? parseInt(b) : 0;
//alert(b);

                while (a * n + b <= all_col_num) {
                    cols[n] = a * n + b;
                    n++;
                }
            }
            var table_minrow = arguments[2] ? arguments[2] : 0;
            var table_maxrow = arguments[3] ? arguments[3] : all_row_num + 1;
            var table_firsttd = "";
            var table_currenttd = "";
            var table_SpanNum = 0;
            for (var j = 0; j < cols.length; j++) {
                $(table_id + " tr td:nth-child(" + cols[j] + ")").slice(table_minrow, table_maxrow).each(function (i) {
                    var table_col_obj = $(this);
                    if (table_col_obj.html() != " ") {
                        if (i == 0) {
                            table_firsttd = $(this);
                            table_SpanNum = 1;

                        }
                        else {
                            table_currenttd = $(this);
                            if (table_firsttd.text() == table_currenttd.text()) {
                                table_SpanNum++;
                                table_firsttd.attr("rowSpan", table_SpanNum);
                                table_currenttd.attr("rowSpan", table_SpanNum);
                                table_currenttd.hide(); //remove();
                                table_currenttd.addClass("hide");
                            } else {
                                table_firsttd = $(this);
                                table_SpanNum = 1;