数据表列值缺失

Question

我正在处理数据表，当加载新数据时，某些列值会丢失并且现有值不会被覆盖。

Json返回：

 {Site_Name: "ABC1", Site_Status: 1, Update_On: "12:15:57", Shutdown_Code: "1", Shutdown_Reason: "Reason 1"}
 {Site_Name: "ABC2", Site_Status: 1, Update_On: "12:15:58", Shutdown_Code: "4", Shutdown_Reason: "Reason 2"}
 {Site_Name: "ABC3", Site_Status: 1, Update_On: "12:15:59", Shutdown_Code: "2", Shutdown_Reason: "Reason 3"}
 {Site_Name: "ABC4", Site_Status: 1, Update_On: "12:16:00", Shutdown_Code: "6", Shutdown_Reason: "Reason 4"}

功能

：

function RefreshTable(tableId, urlData) {

$.ajax({
    type: 'POST',
    url: window.location.pathname + "/RefreshTimer",

    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function (json) {

        table = $(tableId).dataTable();

        oSettings = table.fnSettings();

        start = Date.now();

        table.fnClearTable(this);


        for (var i = 0; i < json.Table.length; i++) {


            table.oApi._fnAddData(oSettings, json.Table[i]);
          //to change value to Dot (not overriding)
            if (json.Table[i].Site_Status === true || json.Table[i].Site_Status === "1") {


                json.Table[i].Site_Status = '<span class="redDot"></span>';

                isShutdown = true;



            } else {

                json.Table[i].Site_Status='<span class="greenDot"></span>';

            }
            oSettings.aiDisplay = oSettings.aiDisplayMaster.slice();

            table.fnDraw();
        }


        clearInterval(interval);
        interval = setInterval("getData()", 120000);
        startTimer(fiveMinutes, display, true);


     }
  });

}

输出