jQuery Grid Plugin - jqGrid

    jQuery("#jsonmap").jqGrid({
        url: 'Servers/GetDataTable.ashx',
        datatype: "json",
        colNames: ['ProjectID', 'ProjectName', 'BeginDate', 'EndDate', 'Owner', 'IsTfs'],
        colModel: [
           { name: 'ProjectId', index: 'ProjectId', width: 55 },
           { name: 'ProjectName', index: 'ProjectName', width: 90, editable: true, editoptions: { size: 30} },
           { name: 'BeginDate', index: 'BeginDate', width: 100, editable: true, editoptions: { size: 30} },
           { name: 'EndDate', index: 'EndDate', width: 80, align: "right", editable: true, editoptions: { size: 30} },
           { name: 'Owner', index: 'Owner', width: 80, align: "right", editable: true, editoptions: { size: 30} },
           { name: 'IsTfs', index: 'IsTfs', width: 80, align: "right", editable: true, editoptions: { size: 30} },
       ],
        rowNum: 10,
        rowList: [10, 20, 30],
        pager: '#pjmap',
        sortname: 'ProjectId',
        viewrecords: true,
        sortorder: "desc",
        jsonReader: {
            repeatitems: false,
            id: "0"
        },
        caption: " Simple",
        height: '100%',
        autowidth: true,
        editurl: "Servers/TableEdit.ashx"
    });

    $("#bedata").click(function() {
        var gr = jQuery("#jsonmap").jqGrid('getGridParam', 'selrow');

        if (gr != null) {
            jQuery("#jsonmap").jqGrid('editGridRow', gr,
               {
                   height: 280,
                   width: 500,
                   modal: true,
                   editCaption: "Edit",
                   closeAfterEdit: true,
                   reloadAfterSubmit: true,
                   afterSubmit:function(response,data){ alert(1);}  //
               }
            );
        }
        else {
            alert("请选择一行");
        }
    });

When  alert(1) called ,jqgrid throw a exception  aa.0is null or aa.0 not an object

in

jquery.jqgrid.min.js

aa.aterSubmit(ae,E)}}if(aa[0]===false)