JS SDK Reference

paypal.Buttons(options)

• style
• createOrder
• onApprove
• onCancel
• onError

style

Customize your buttons by passing in the style option.

1paypal.Buttons({
2  style: {
3    layout: 'vertical',
4    label:  'paypal'
5  }
6}).render('#paypal-button-container');

See additional, optional parameters.

createOrder

The createOrder parameter sets up the details of the transaction. It's called when the buyer clicks the PayPal button, which launches the PayPal Checkout window where the buyer logs in and approves the transaction on the paypal.com website.

Because this is a client-side call, PayPal calls the Orders API on your behalf, so you don't need to provide the headers and body.

Actions

• order — exposes the create action for creating the order.

1<script>
2  paypal.Buttons({
3    createOrder: function(data, actions) {
4      // Set up the transaction
5      return actions.order.create({
6        purchase_units: [{
7          amount: {
8            value: '0.01'
9          }
10        }]
11      });
12    }
13  }).render('#paypal-button-container');
14</script>

actions.order.create options:

• intent — The intent to either capture the payment immediately or authorize a payment for an order after order creation. The values are:

  • CAPTURE — Default. The merchant intends to capture payment immediately after the customer makes a payment.
  • AUTHORIZE — Alternative Payment Methods do not support intent AUTHORIZE

• payer — The customer who approves and pays for the order. The customer is also known as the payer and buyer. See payer object definition for additional information.

• purchase_units — Required. An array of purchase units. Each purchase unit establishes a contract between a payer and the payee. Each purchase unit represents either a full or partial order that the payer intends to purchase from the payee. See purchase unit request object definition for additional information.

• application_context — Customize the payer experience during the approval process for the payment with PayPal. See order_application_context object definition for additional information.

onApprove

The onApprove function is called after the buyer approves the transaction.

Make the capture call from your server to capture the funds from the transaction and show a message to the buyer to let them know the transaction is successful.

onCancel

When a buyer cancels a payment, they typically return to the parent page. You can instead use the onCancel function to show a cancellation page or return to the shopping cart.

Data attributes

orderId — ID of the order.

1paypal.Buttons({
2  onCancel: function (data) {
3    // Show a cancel page, or return to cart
4  }
5}).render('#paypal-button-container');

onError

If an error prevents buyer checkout, alert the user that an error has occurred with the buttons using the onError callback:

1paypal.Buttons({
2  onError: function (err) {
3    // For example, redirect to a specific error page
4    window.location.href = "/your-error-page-here";
5  }
6}).render('#paypal-button-container');

paypal.Buttons().isEligible

Before rendering marks and payment fields, you can use paypal.Buttons().isEligible to check if the funding source is eligible.

1// Loop over each funding source / payment method
2paypal.getFundingSources().forEach(function(fundingSource) {
3
4  // Initialize the buttons
5  var button = paypal.Buttons({
6    fundingSource: fundingSource
7  });
8
9  // Check if the button is eligible
10  if (button.isEligible()) {
11
12    // Render the standalone button for that funding source
13    button.render('#paypal-button-container');
14  }
15});

Funding

This table includes the available alternative payment methods.