MerchantValidationEvent: complete() method

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

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

The MerchantValidationEvent method complete() takes merchant-specific information previously received from the validationURL and uses it to validate the merchant.

All you have to do is call complete() from your handler for the merchantvalidation event, passing in the data fetched from the validationURL.

Syntax

complete(validationData)
complete(merchantSessionPromise)

Parameters

validationData or merchantSessionPromise: An object containing the data needed to complete the merchant validation process, or a Promise which resolves to the validation data.

Return value

None (undefined).

Exceptions

This exception may be passed into the rejection handler for the promise:

InvalidStateError DOMException: Returned if the event did not come directly from the user agent, but was instead dispatched by other code. Another payment request is currently being processed, the current payment request is not currently being displayed to the user, or payment information is currently being updated.

Examples

In this example, we see the client-side code needed to support merchant validation for a payment request called payRequest:

payRequest.onmerchantvalidation = (event) => {
  const validationDataPromise = getValidationData(event.validationURL);
  event.complete(validationDataPromise);
};

function getValidationData(url) {
  // Retrieve the validation data from the URL
  // …
}

This code sets up a handler for the merchantvalidation event. The event handler calls a function, getValidationData(), which retrieves the data from the validation URL, then passes that data (or a promise to deliver the data) into complete().

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`complete()` Deprecated	Chrome – No support Chrome footnote No support	Edge – No support Edge footnote No support	Firefox – Preview support Firefox Nightly footnote , disabled disabled Users must explicitly set the `dom.payments.request.supportedRegions` preference to `A comma-delineated list of one or more 2-character ISO country codes indicating the countries in which to support payments (for example, US,CA.`. To change preferences in Firefox, visit about:config. footnote Available only in Nightly builds. footnote Preview browser support	Opera – No support Opera footnote No support	Safari – Full support Safari 11.1 (Release date: 2018-04-12) footnote Full support	Chrome Android – No support Chrome Android footnote No support	Firefox for Android – No support Firefox for Android footnote No support	Opera Android – No support Opera Android footnote No support	Safari on iOS – Full support Safari on iOS 11.3 (Release date: 2018-03-29) footnote Full support	Samsung Internet – No support Samsung Internet footnote No support	WebView Android – No support WebView Android footnote No support	WebView on iOS – Full support WebView on iOS 11.3 (Release date: 2018-03-29) footnote Full support

Tip: you can click/tap on a cell for more information.

Full support: Full support
No support: No support
: Deprecated. Not for use in new websites.
: See implementation notes.
: User must explicitly enable this feature.