Web/API/PaymentResponse/complete

Secure contextThis feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The PaymentRequest method complete() of the Payment Request API notifies the user agent that the user interaction is over, and causes any remaining user interface to be closed. This method must be called after the user accepts the payment request and the Promise returned by the PaymentRequest.show() method is resolved.

Syntax

completePromise = paymentRequest.complete(result);

Parameters

result Optional

A DOMString indicating the state of the payment operation upon completion. It must be one of the following:

success: The payment was successfully processed. The user agent may or may not present some form of "payment successful" indication to the user.
fail: The payment was not successfully processed. The failure may or may not be announced to the user by the user agent, depending on its design.
unknown: The success or failure status of the transaction is unknown or irrelevant, and the user agent should not present any notification, even if it normally would. This is the default value.

Note: In older versions of the specification, an empty string, "", was used instead of unknown to indicate a completion without a known result state. See the Browser compatibility section below for details.

Return value

A Promise which resolves with no input value once the payment interface has been fully closed. If an error occurs, the promise instead rejects, returning one of the exceptions listed below.

Exceptions

AbortError: The document in which the payment request is taking place became inactive while the user interface was shown.
InvalidStateError: The payment has already completed, or complete() was called while a request to retry the payment is pending. You can't treat a payment as complete after requesting that the payment be tried again.

Examples

The following example sends payment information to a secure server using the Fetch API. It calls complete() with an answer appropriate to the status in the response.

// Initialization of PaymentRequest arguments are excerpted for the 
//   sake of brevity.
var payment = new PaymentRequest(supportedInstruments, details, options);

payment.show().then(function(paymentResponse) {
  var fetchOptions = {
    method: 'POST',
    credentials: include,
    body: JSON.stringify(paymentResponse)
  };
  var serverPaymentRequest = new Request('secure/payment/endpoint');
  fetch(serverPaymentRequest, fetchOptions).then( response => {
    if (response.status < 400) {
      paymentResponse.complete("success");
    } else {
      paymentResponse.complete("fail");
    };
  }).catch( reason => {
    paymentResponse.complete("fail");
  });
}).catch(function(err) {
  console.error("Uh oh, something bad happened", err.message);
});

Specifications

Specification	Status	Comment
Payment Request APIThe definition of 'PaymentResponse: complete' in that specification.	Candidate Recommendation	Initial definition.

Browser Compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`complete()`	Chrome Full support 60	Edge Full support 15	Firefox No support No Notes' No support No Notes' Notes' Available only in nightly builds.	IE No support No	Opera Full support 47	Safari Full support 11.1	WebView Android No support No	Chrome Android Full support 56	Firefox Android No support No Notes' No support No Notes' Notes' Available only in nightly builds.	Opera Android Full support 43	Safari iOS Full support 11.3	Samsung Internet Android Full support 6.0

Legend

Full support: Full support
No support: No support
See implementation notes.': See implementation notes.

PaymentResponse.complete() by Mozilla Contributors is licensed under CC-BY-SA 2.5.