检查Jquery中JSON响应的表null

var dataResponse = JSON.parse(response);
var NE_length_Data = "";
if (dataResponse != null || dataResponse != undefined) {

  var FSAInfoData = dataResponse.Table; // UG
  var FSAInfoData1 = dataResponse.Table1; // MDU
  var FSAInfoData2 = dataResponse.Table2; // AR
  var FSAInfoData3 = dataResponse.Table3; // vendor
  var FSAInfoData4 = dataResponse.Table4; // history
  var FSAInfoData5 = dataResponse.Table5; // progress data

  $("#spnFiberEngFsaId").text(FSA_IDNew);
  $("#spnProgressID").text(FSAInfoData5[0].JOB_PROGRESS_ID);

  var NE_LENGTH = FSAInfoData[0].UG_LENGTH + FSAInfoData2[0].AR_LENGTH; // Here I want to add condition to check null for 1st table
  $("#spnFiberEngFsaLength").text(NE_LENGTH.toFixed(4));

}