I have this function:

function countLitreKgSums(cProductIds){

  var cLitreKgSums = new Array();

  var cWeek = 0;

  for(i=0;i<cProductIds.length;i++){

    var cLitreKgSum = 0;

    $(#plan_table td[class='week']).each(function(){

            cWeek = $(this).html();

            var cLitreKgValue = $(input[name*='plan_table_week + cWeek + _prod + cProductIds[i] + _']).val();

            if (cLitreKgValue == ) {

                cLitreKgValue = 0;

            }

            cLitreKgValue = cLitreKgValue.replace(/,/g, '.').replace(/[^d.]/g, '').replace(/s/g, '');

            cLitreKgValue = parseFloat(cLitreKgValue);

            cLitreKgSum += cLitreKgValue;

       });

       cLitreKgSum = Math.round(cLitreKgSum * 100) / 100;

       cLitreKgSums[i] = cLitreKgSum;

  }

  return cLitreKgSums;

  //console.log(cLitreKgSums);

}

I get error message that .replace is not a function but in other functions it works as it should. What is the difference?