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PaymentRequestEvent: openWindow() method

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The openWindow() method of the PaymentRequestEvent interface opens the specified URL in a new window, only if the given URL is on the same origin as the calling page. It returns a Promise that resolves with a reference to a WindowClient.

Syntax

openWindow(url)

Parameters

url: The URL to open in the new window. It must be on the same origin as the calling page.

Return value

A Promise that resolves with a reference to a WindowClient.

Examples

…
self.addEventListener('paymentrequest', async e => {
…
  // Retain a promise for future resolution
  // Polyfill for PromiseResolver at link below.
  resolver = new PromiseResolver();

  // Pass a promise that resolves when payment is done.
  e.respondWith(resolver.promise);
  // Open the checkout page.
  try {
    // Open the window and preserve the client
    client = await e.openWindow(checkoutURL);
    if (!client) {
      // Reject if the window fails to open
      throw 'Failed to open window';
    }
  } catch (err) {
    // Reject the promise on failure
    resolver.reject(err);
  };
});
…

See Open the payment handler window to display the web-based payment app frontend for more details about how this would be used.

Specifications

Specification
Payment Handler API # dom-paymentrequestevent-openwindow

Browser compatibility