working jqGrid Example

HTML

<table id="grid"></table>
<input type="button" id="UpdateGridButton" value="Update" />

JavaScript

var data = [[48803, "DSK1", "", "02200220", "OPEN"], [48769, "APPR", "", "77733337", "ENTERED"]];

$("#grid").jqGrid({
    datatype: "local",
    height: 250,
    colNames: ['Inv No', 'Thingy', 'Blank', 'Number', 'Status'],
    colModel: [{
        name: 'id',
        index: 'id',
        width: 60,
        sorttype: "int"},
    {
        name: 'thingy',
        index: 'thingy',
        width: 90,
        sorttype: "date"},
    {
        name: 'blank',
        index: 'blank',
        width: 30},
    {
        name: 'number',
        index: 'number',
        width: 80,
        sorttype: "float"},
    {
        name: 'status',
        index: 'status',
        width: 80,
        sorttype: "float"}
    ],
    caption: "Stack Overflow Example"
});

var names = ["id", "thingy", "blank", "number", "status"];
var mydata = [];

for (var i = 0; i < data.length; i++) {
    mydata[i] = {};
    for (var j = 0; j < data[i].length; j++) {
        mydata[i][names[j]] = data[i][j];
    }
}

for (var i = 0; i <= mydata.length; i++) {
    $("#grid").jqGrid('addRowData', i + 1, mydata[i]);
}

$('#UpdateGridButton').click(function(){
    console.log("myData:", mydata[0]);
    mydata[0].status = "CLOSED";
    console.log("myData:", mydata[0]);
    console.log("myData:", mydata);
    delete mydata[1];
    
    //$('#grid').clearGridData();
    
    $("#grid").jqGrid('setGridParam', { data: mydata});

    $("#grid").trigger('reloadGrid', [{current: true}]);
});