json - JavaScript nested for loop resulting in displaying only last iterating object value

Question

I have a json array object which is getting constructed using two different array objects. But after looping I'm getting the value of the last looped value for every array.

But for the serial number element I'm getting the value of the last iterated value. Am I missing something?

for (z = 0; z < postAdvancedAddressCheckRequest.addressCheck.energyQuoteAddress.electricityMeter.length; z++) {
  for (i = 0; i < ecoesGetTechnicalDetailsByMpanResponse.Results[0].UtilityMatches.length; i++) {
    for (j = 0; j < ecoesGetTechnicalDetailsByMpanResponse.Results[0].UtilityMatches[i].Meters.length; j++) {
      for (k = 0; k < ecoesGetTechnicalDetailsByMpanResponse.Results[0].UtilityMatches[i].Meters[j].MeterDetails.length; k++) {
        if (ecoesGetTechnicalDetailsByMpanResponse.Results[0].UtilityMatches[i].Meters[j].MeterDetails[k].Key === "meter_serial_number") {
          var serialNumber1 = ecoesGetTechnicalDetailsByMpanResponse.Results[0].UtilityMatches[i].Meters[j].MeterDetails[k].Value;
        }
      }
      electricityMeterObject = {
        "Check": true,
        "serialNumber": serialNumber1
      }
      electricityArray.push(electricityMeterObject);
    }
  }
}

question from:https://stackoverflow.com/questions/65870497/javascript-nested-for-loop-resulting-in-displaying-only-last-iterating-object-va

Answer 1

This is easier to debug

const meter = postAdvancedAddressCheckRequest.addressCheck.energyQuoteAddress.electricityMeter,
  matches = ecoesGetTechnicalDetailsByMpanResponse.Results[0].UtilityMatches;
for (let z = 0; z < meter.length; z++) {
  for (let i = 0; i < matches.length; i++) {
    for (let j = 0; j < matches.Meters.length; j++) {
      for (let k = 0; k < matches[i].Meters[j].MeterDetails.length; k++) {
        if (matches[i].Meters[j].MeterDetails[k].Key === "meter_serial_number") {
          electricityArray.push({
            "Check": true,
            "serialNumber": matches[i].Meters[j].MeterDetails[k].Value
          });
        }
      }
    }
  }
}