Update

Update a PaymentRequest object paymentRequest.update(options: object) PaymentRequest instances can be updated with an options object. Available options are documented below. paymentRequest.update can only be called when the browser payment interface is not showing. To update the PaymentRequest right before the payment interface is initiated, call paymentRequest.update in your click event handler before calling paymentRequest.show. - options A set of options to update this PaymentRequest instance with. - currency Three character currency code (e.g., usd). - total A PaymentItem object. This PaymentItem is shown to the customer in the browser’s payment interface. - displayItems An array of PaymentItem objects. These payment items are shown as line items in the browser’s payment interface. Note that the sum of the line item amounts does not need to add up to the total amount above. - shippingOptions An array of ShippingOption objects. The first shipping option listed appears in the browser payment interface as the default option. - applePay Specify Apple Pay specific options. These are passed through to the Apple Pay API. - recurringPaymentRequest Specify a request to set up a recurring payment. See the Apple Pay documentation for more details. - paymentDescription - managementURL - regularBilling - amount - label - recurringPaymentStartDate - recurringPaymentEndDate - recurringPaymentIntervalUnit - recurringPaymentIntervalCount - trialBilling - amount - label - recurringPaymentStartDate - recurringPaymentEndDate - recurringPaymentIntervalUnit - recurringPaymentIntervalCount - billingAgreement - deferredPaymentRequest Specify a request to set up a deferred payment. See the Apple Pay documentation for more details. - paymentDescription - managementURL - deferredBilling - amount - amountType Indicates whether the billing amount is known at request time. When set to 'final', the Apple Pay payment sheet shows the configured amount. - label - deferredPaymentDate - billingAgreement - freeCancellationDate If set, you must also supply a freeCancellationDateTimeZone. - freeCancellationDateTimeZone If set, you must also supply a freeCancellationDate. These are tz timezones such as America/Los_Angeles, Europe/Dublin, and Asia/Singapore. - automaticReloadPaymentRequest Specify a request to set up an automatic reload payment. See the Apple Pay documentation for more details. - paymentDescription - managementURL - automaticReloadBilling - amount - label - automaticReloadPaymentThresholdAmount - billingAgreement - cardFunding By default, Apple Pay allows both credit and debit cards. You can specify if you only want to support one type of card with either 'supportsDebit' or 'supportsCredit'. ### Example title Update a PaymentRequest