// Példányosítja a Product osztályt.
function Product(productCode, name, description, netPrice, vatRate, isPayPlazaPaymentType) {
  this.ProductCode = productCode;
  this.Name = name;
  this.Description = description;
  this.NetPrice = netPrice;
  this.VATRate = vatRate;
  this.IsPayPlazaPaymentType = isPayPlazaPaymentType;
}

// properties
Product.prototype.ProductCode = "";
Product.prototype.Name = "";
Product.prototype.Description = "";
Product.prototype.NetPrice = 0;
Product.prototype.VATRate = 0.0;
Product.prototype.IsPayPlazaPaymentType = false;