How to display total of records in jqgrid -

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i trying display total records in jqgrid. here code using display.grid displaying not getting total.

and getting error:footer-row invalid propert can tell me mistake?

$("#jqgrid").jqxgrid(               {                   pagesize: 5,                   source: dataadapter,                   width: 700,                   sortable: true,                   pageable: true,                   autoheight: true,                   columnsresize: true,                   filterable: true,                   showfilterrow: true,                   showtoolbar: true,                   footerrow: true,                   userdataonfooter:true,                   rendertoolbar: function (toolbar) {                       var container = $("<div style='overflow: hidden; position: relative; margin: 3px;'></div>");                       var exportbutton = $("<div style='float: right; margin-right: 5px;'>    <img style='position: relative; margin-top: 2px; width: 16px; height: 16px;' src='images/excel.png' /><span style='margin-left: 4px; position: relative; top: -3px;'>export excel</span></div>");                       container.append(exportbutton);                       toolbar.append(container);                       exportbutton.jqxbutton({ width: 150, height: 20 });                       exportbutton.click(function (event) {                           $("#jqgrid").jqxgrid('exportdata', 'xls', 'report');                       });                   },                   selectionmode: 'checkbox',                   //rendertoolbar: function (toolbar) {                   //    var container = $("<div style='overflow: hidden; position:relative;margin:3px;'></div>");                    //    var exportbutton = $("<div style='float:right;margin-right:20px;'><img style='position:relative;margin-top:2px;width:16px;height:16px' src='./images/excel.png'/><span style='margin-left:4px;position:relative;top:2px'>export excel</span></div>");                   //    exportbutton.jqxbutton({ width: '130' });                   //    container.append(exportbutton);                   //    toolbar.append(container);                   //}                   columns: [                              { text: 'villagename', datafield: 'villagename', width: 'auto' },                              { text: 'samples collected', datafield: 'villagesamples', width: 'auto' }                    ],                   gridcomplete: function () {                       calculatetotal();                   },                });             var themesetting = { theme: "darkblue" };             $("#jqgrid").jqxgrid(themesetting);             var calculatetotal = function () {                 var griddata = $("#jqgrid").jqgrid('getgridparam', 'data'),                     = 0, totalamount = 0, totaltax = 0;                 (; < griddata.length; i++) {                     var rowdata = griddata[i];                     totalamount += number(rowdata.villagesamples);                  }                 $("#jqgrid").jqgrid('footerdata', 'set', { name: 'total', villagesamples: totalamount });             }


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