<div id="smart-button-container"> <div style="text-align: center;"> <div style="margin-bottom: 1.25rem;"> <p>WWJMRD Fee</p> <select id="item-options"><option value="For 1 Article" price="50">For 1 Article - 50 USD</option><option value="For 2 Article" price="100">For 2 Article - 100 USD</option><option value="For 3 Article" price="150">For 3 Article - 150 USD</option><option value="For Review Process / plagiarism check" price="20">For Review Process / plagiarism check - 20 USD</option></select> <select style="visibility: hidden" id="quantitySelect"></select> </div> <div id="paypal-button-container"></div> </div> </div> <script src="https://www.paypal.com/sdk/js?client-id=sb&currency=USD" data-sdk-integration-source="button-factory"></script> <script> function initPayPalButton() { var shipping = 0; var itemOptions = document.querySelector("#smart-button-container #item-options"); var quantity = parseInt(); var quantitySelect = document.querySelector("#smart-button-container #quantitySelect"); if (!isNaN(quantity)) { quantitySelect.style.visibility = "visible"; } var orderDescription = 'WWJMRD Fee'; if(orderDescription === '') { orderDescription = 'Item'; } paypal.Buttons({ style: { shape: 'rect', color: 'blue', layout: 'vertical', label: 'paypal', }, createOrder: function(data, actions) { var selectedItemDescription = itemOptions.options[itemOptions.selectedIndex].value; var selectedItemPrice = parseFloat(itemOptions.options[itemOptions.selectedIndex].getAttribute("price")); var tax = (18 === 0) ? 0 : (selectedItemPrice * (parseFloat(18)/100)); if(quantitySelect.options.length > 0) { quantity = parseInt(quantitySelect.options[quantitySelect.selectedIndex].value); } else { quantity = 1; } tax *= quantity; tax = Math.round(tax * 100) / 100; var priceTotal = quantity * selectedItemPrice + parseFloat(shipping) + tax; priceTotal = Math.round(priceTotal * 100) / 100; var itemTotalValue = Math.round((selectedItemPrice * quantity) * 100) / 100; return actions.order.create({ purchase_units: [{ description: orderDescription, amount: { currency_code: 'USD', value: priceTotal, breakdown: { item_total: { currency_code: 'USD', value: itemTotalValue, }, shipping: { currency_code: 'USD', value: shipping, }, tax_total: { currency_code: 'USD', value: tax, } } }, items: [{ name: selectedItemDescription, unit_amount: { currency_code: 'USD', value: selectedItemPrice, }, quantity: quantity }] }] }); }, onApprove: function(data, actions) { return actions.order.capture().then(function(details) { alert('Transaction completed by ' + details.payer.name.given_name + '!'); }); }, onError: function(err) { console.log(err); }, }).render('#paypal-button-container'); } initPayPalButton(); </script>