/Web APIs

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.





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.


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.
  // 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

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


Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
openWindow 70 79 No No 57 No No 70 No 49 No 10.0

See also

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