问Jquery每个Json对象

EN

{
    "ThreadCount":61,
    "GroupList":[
        {"userName":"KLT","count":2687},
        {"userName":"KCameron","count":718},
        {"userName":"IRG","count":156},{"userName":"JLB","count":123},{"userName":"HML","count":121},{"userName":"SMN","count":99},{"userName":"TBridges","count":68},{"userName":"ARF","count":65},{"userName":"MarkGreenway","count":61},{"userName":"SMC","count":55},{"userName":"EMD","count":52},{"userName":"PKP","count":41},{"userName":"KBounds","count":36},{"userName":"MAN","count":33},{"userName":"LAC","count":17},{"userName":"EPS","count":17},{"userName":"CAN","count":7},{"userName":"MAJ","count":3},{"userName":"CPC","count":2}]
}

success: function(result) {
    $("#Unfiled").html(result.ThreadCount);
    $.each(result.GroupList, function(user) {
        $('#myTable > tbody').append(
            '<tr><td>'
            + user.userName
            + '</td><td>'
            + user.count +
            '</td></tr>'
        );
    });
}

 <table>
    <tr>
        <td>
            Unfiled Emails:
        </td>
        <td id="Unfiled">
            -1
        </td>
    </tr>
    <tr>
        <td colspan="2">
            <table id="myTable" border="2" cellpadding="3" cellspacing="3">
            </table>
        </td>
    </tr>
</table>