total = 0 products = [] paymentMethod = null balance = 0 username = "" id = 0 function get_product(barcode){ res = $.get("getProduct/" + barcode, function(data){ add_product(data.pk, data.barcode, data.name, data.amount); }); } function add_product(pk, barcode, name, amount){ exist = false index = -1 for(k=0;k < products.length; k++){ if(products[k].pk == pk){ exist = true index = k } } if(exist){ products[index].quantity += 1; }else{ products.push({"pk": pk, "barcode": barcode, "name": name, "amount": amount, "quantity": 1}); } generate_html() } function generate_html(){ html ="" for(k=0;k" + product.name + "" + String(product.amount) + "" + String(product.quantity) + "" + String(product.quantity * product.amount) + "" } $("#items").html(html) updateTotal() } function updateTotal(){ total = 0 for(k=0;k