Average Calculator | WordPress.org

Hello
Now I want to calculate the average of 4 numbers, but if one of the 4 number values is not entered as a null value, I want it to calculate the average by dividing it by the remaining 3 numbers. So I’m trying to calculate the average. I made a coding at the bottom, but I couldn’t run it, where is the error?
Sample ; 1,2,3,4 average = 2,5
1,2,4 = average = 2,66 (3. field example not entered)
Thanks

(function(){
  var yaziliortalama;

  var kutucuk1 = fieldname29;
  var kutucuk2 = fieldname30;
  var kutucuk3 = fieldname38;
  var kutucuk4 = fieldname39;

  var toplam = 0;
  var sayac = 0;

  if (!isNaN(kutucuk1)) {
    toplam += kutucuk1;
    sayac++;
  }

  if (!isNaN(kutucuk2)) {
    toplam += kutucuk2;
    sayac++;
  }

  if (!isNaN(kutucuk3)) {
    toplam += kutucuk3;
    sayac++;
  }

  if (!isNaN(kutucuk4)) {
    toplam += kutucuk4;
    sayac++;
  }

  yaziliortalama = toplam / sayac;

  jQuery('#calculation-yaziliortalama').html(yaziliortalama);
  jQuery('.kriter1-yaziliortalama').html('Yazılı Sınav Ortalaması :');
  jQuery('.kriter1-yaziliortalama').html(yaziliortalama);

  return [yaziliortalama];
})();

• This topic was modified 28 minutes ago by klingbeil.