var quantity = 1.10;
quantity = parseInt(quantity); // 1 (number )var quantity = 1.10;
quantity = quantity.toFixed(1); // "1.1" (string)var quantity = 1.10;
quantity = parseFloat(quantity); // 1.1 (number)@media only screen and (max-width : 768px)
@media only screen and (min-width : 769px)