jQuery(document).ready(function() { function updatePrice() { var quantity = parseInt($("input.qty").val()); var basePrice = 0.035; var rules = [{"min":2000,"max":6000,"discount":0},{"min":8000,"max":10000,"discount":5},{"min":12000,"max":20000,"discount":10},{"min":22000,"max":30000,"discount":15},{"min":32000,"max":60000,"discount":20}]; var discount = 0;for (var i = 0; i = rules[i].min && quantity <= rules[i].max) { discount = rules[i].discount; break; } }var discountedPrice = basePrice - (basePrice * (discount / 100)); var totalPrice = discountedPrice * quantity; var totalPriceInclIVA = totalPrice * 0.22;$(".quantity-based-price").html( "Sconto: " + discount.toFixed(2) + "%
" + "Prezzo per unità: " + discountedPrice.toFixed(3).replace(".", ",") + "€
" + "Prezzo totale: " + totalPrice.toFixed(2).replace(".", ",") + "€ incl. IVA: " + totalPriceInclIVA.toFixed(2).replace(".", ",") + "€" ); }$("input.qty").on("change", updatePrice); updatePrice(); });