Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
PaymentRequestEvent constructor creates a new
PaymentRequestEvent object which is a constructor for a
PaymentRequestEvent which is the object passed to a payment handler when a
PaymentRequest is made.