合并列中相同的单元格

第一步：在列上加上cellattr属性

name: 'Category', index: 'Category', width: 40, align: "center",

                cellattr: function (rowId, tv, rawObject, cm, rdata) {

                    //合并单元格

                    return 'id=\'Category' + rowId + "\'";

                }

第二步：给gridComplete加方法

gridComplete: function() {

                var gridName  = "tbList";

                Merger(gridName, 'Category');

            }

第三步：Merger(gridName, CellName)方法

//公共调用方法

    function Merger(gridName, CellName) {

        //得到显示到界面的id集合

        var mya = $j("#" + gridName + "").getDataIDs();

        //当前显示多少条

        var length = mya.length;

        for (var i = 0; i < length; i++) {

            //从上到下获取一条信息

            var before = $j("#" + gridName + "").jqGrid('getRowData', mya[i]);

            //定义合并行数

            var rowSpanTaxCount = 1;

            for (j = i + 1; j <= length; j++) {

                //和上边的信息对比 如果值一样就合并行数+1 然后设置rowspan 让当前单元格隐藏

                var end = $j("#" + gridName + "").jqGrid('getRowData', mya[j]);

                if (before[CellName] == end[CellName]) {

                    rowSpanTaxCount++;

                    $j("#" + gridName + "").setCell(mya[j], CellName, '', { display: 'none' });

                } else {

                    rowSpanTaxCount = 1;

                    break;

                $j("#" + CellName + "" + mya[i] + "").attr("rowspan", rowSpanTaxCount);

        }

    }