jquery合并table相同单元格

//合并单元格重复列

function tableRowspan(tableId, tableColnum) {            firsttd = "";            currenttd = "";            spanNum = 0;            obj = $(tableId + " tr td:nth-child(" + tableColnum + ")");            obj.each(function (i) {                if (i == 0) {                    firsttd = $(this);                    spanNum = 1;                } else {                    currenttd = $(this);                    if (firsttd.text() == currenttd.text()) {                        spanNum++;                        currenttd.hide();                        firsttd.attr("rowSpan", spanNum);                    } else {                        firsttd = $(this);                        spanNum = 1;                    }                }            });        }

使用方法：

tableRowspan('#MyTable', '1');//列从1开始