问题：
想使用datagird里嵌入select下拉框，并在提交form表单时获取datagrid选中的每行数据里的每个下拉框选中的值。

解决方案：
其中economicIssuesSelect使用下拉框，重点关注
initEconomicIssues(row)方法。这里的方法需要传递row

         
        $('#queryPcpTable').datagrid({
            title: 'pcp领用查询信息',
            width: wd,
            url: send_url,
            queryParams:params,
            striped: true,
            pagination: true,
            pageNumber: 1,
            // 默认初始每页的行数
            pageSize: 5,
            // 每页行数可选列表
            pageList: [5],
            nowrap: true,
            checkOnSelect: true,
            selectOnCheck: true,
            columns: [[
                {field: 'checkbox', checkbox: true},
                {
                    field: 'consumingNo',
                    title: '领用单号',
                    align: 'center',
                    width: 180,
                    formatter:function(value,row,index) {
                        return '<a name="detail_data" href="#" οnclick="javascript:detailRow(this)">'+ value  + '</a>';
                    }
                },
                {field: 'consumingNumber', title: '领用数量', align: 'center',
                    width: 120
                },
                {field: 'consumingAmount', title: '领用金额', align: 'center', width: wd * (1.3 / (col_size + 1))},
                {field: 'economicIssuesSelect', title: '领用事项', align: 'center', width: wd * (1.3 / (col_size + 1)),
                    formatter:function(value,row,index) {
                        var selectHtml = initEconomicIssues(row);
                        return selectHtml;
                    }
                },
                // {   field: 'economicIssuesNo',
                //     title: '领用事项', align: 'center',
                //     width: wd * (1.3 / (col_size + 1)),
                //     editor: {
                //         type: 'combobox',//下拉框
                //         options: {
                //             valueField: 'economicIssuesNo',//对应为表格中的field
                //             textField: 'economicIssuesDesc',//显示值
                //             editable: false,
                //             panelHeight:102,//控制下拉框高度
                //             data: economicIssuesNoArryData,	//json数据
                //             required: false
                //         }
                //     }
                // },
                {field: 'url', hidden:true }
            ]],
            onClickRow: function (rowIndex, rowData) {
            },
            onCheck: function (rowIndex, rowData) {
            },
            onUncheck: function (rowIndex, rowData) {
            },
            onLoadSuccess:function (data){
                // var rows = $(this).datagrid("getRows");
                // //使等级显示为下拉框
                // for(var index=0;index<rows.length;index++){
                //     $(this).datagrid("beginEdit", index);
                //     if($(this).datagrid("getEditor",{index:index,field:"economicIssuesNo"}).target.combobox('getValue') == ''){
                //         $(this).datagrid("getEditor",{index:index,field:"economicIssuesNo"}).target.combobox('setValue', "空");
                //     }
                // }
            }
        });

其中economicIssuesNoArry是下拉框里list值，可以是写死也可以是动态ajax获取，这里的方法重点是select的id，这个id是拼凑出来的，由上个datagrid里的consumingNo（唯一主键）构成

 //初始化领用单号经济事项
    function initEconomicIssues(obj){
        if (economicIssuesNoArry.length > 0) {
            var html = '<select id="economicIssuesSelect' + obj.consumingNo +  '"' +  'class="easyui-combobox" style="width:250px; required="true">';
            for (var i = 0; i < economicIssuesNoArry.length; i++) {
                html += '<option value="' + economicIssuesNoArry[i].economicIssuesNo + '">' + economicIssuesNoArry[i].description + '</option>'
            }
            html += "</select>";
            return html;
        } else {
            //支出类别
            var issuesCategory = $("#issuesCategory").val();
            //支出项目
            var issuesClass = $("#issuesClass").val();
            //预算中心
            var budgetCenter = $('#budgetCenter').val();
            //机构代码
            var finBranchCode = $('#responsibleFinBranchCode').val();

            var html = "";
            //查询经济事项
            $.ajax({
                type: 'post',
                //     url: '${ctx}economicIssuesTbl/getEconomicIssuesNo.do?businessBook=${businessBook}&billType=${billType}' + '&issuesCategory=' + issuesCategory + '&issuesClass=' + issuesClass,
                url: '${ctx}economicIssuesSet/getExpenseEconomicIssues.do?isExpensesApply=Y&businessBook=${businessBook}&billType=13&budgetCenter='
                    + budgetCenter + '&issuesCategory=' + issuesCategory
                    + '&finBranchCode=' + finBranchCode
                    + '&issuesClass=' + issuesClass,
                dataType: 'json',
                async: false,
                success: function (result) {
                    var resData = result.rows;
                    for (var i = 0; i < resData.length; i++) {
                        if (resData[i].description.search("餐饮、茶歇") != -1) {
                            economicIssuesNoArry.push(resData[i]);
                        }
                        if (resData[i].description.search("杂费") != -1) {
                            economicIssuesNoArry.push(resData[i]);
                        }
                    }
                    html = '<select id="economicIssuesSelect' + obj.consumingNo  +  '"' +  'class="easyui-combobox" style="width:250px; required="true">';
                    for (var i = 0; i < economicIssuesNoArry.length; i++) {
                        html += '<option value="' + economicIssuesNoArry[i].economicIssuesNo + '">' + economicIssuesNoArry[i].description + '</option>'
                    }
                    html += "</select>";
                }
            });
            return html;
        }

    }

获取datagird里的下拉框选中的value和text
这里只需获取选中的rows数组然后通过下标获取对应的行数据，最后通过拼凑id值再使用
$(“#id option:selected”).val();
方法获取select选中的值和value

        var rows = $('#queryPcpTable').datagrid('getSelections');
        var num = rows.length;
        ......
      //已选中的领用单增加行
                var rowObj = rows[i];
                //获取领用事项的Id
                var elementText = "#" +  "economicIssuesSelect" + rowObj.consumingNo + " option:selected";
                //获取领用事项描述
                var economicIssuesDesc = $(elementText).text();
                //获取领用事项no
                var economicIssuesNo =   $(elementText).val();