IE jquery easyui datagrid error的无法获取属性“rowspan”的值: 对象为 null 或未定义

1.看下面的代码：

 columns: [
                [
                    { field: 'Org_name', title: '分行[电码]', '280', sortable: true,
                        formatter: function (value, rec) {
                            return rec.Org_name + "[" + rec.Org_code + "]";
                        }
                    },
                    { field: 'Org_name', title: '客户[电码]', '250', sortable: true,
                        formatter: function (value, rec) {
                            return rec.Org_name_branch + "[" + rec.Branch_code + "]";
                        }
                    },
                    { field: 'Contact_name', title: '联系人', '100', sortable: true },
                    { field: 'Contact_tel', title: '电话', '100', sortable: true },
                    { field: 'Mobile', title: '手机', '100', sortable: true },
                    { field: 'Contact_fax', title: '传真号码', '100', sortable: true },
                    { field: 'Remark', title: '备注', '100', sortable: true },
                    ]
                ],
                onDblClickRow: function (value, rec) {
                    var json = "";
                    json = "{'Title':'" + rec.Title + "','Mobile':'" + rec.Mobile + "','Org_id_parent':'" + rec.Org_id_parent + "', 'Ouc_id':'"

                  +   rec.Ouc_id + "','Org_id':'" + rec.Org_id + "','Org_code':'" + rec.Org_code + "','Org_name':'" + rec.Org_name + 

                   "','Contact_name':'" + rec.Contact_name + "','Contact_tel':'" + rec.Contact_tel + "','Contact_fax':'" + rec.Contact_fax + "'}";

                     ClientClose(json);

                 
                }

分析原因：1必须有field 字段标示 

              2.还有就是对了一个逗号