PaymentResponse: payerdetailchange event

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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

A payerdetailchange event is fired by the Payment Request API to a PaymentResponse object when the user makes changes to their personal information while filling out a payment request form. This can happen when the payer is retrying to submit its details after an error has been detected.

The event handler for payerdetailchange should check each value in the form that has changed and ensure that the values are valid. If any are invalid, appropriate error messages should be configured and the retry() method should be called on the PaymentResponse to ask the user to update the invalid entries.

This event is not cancelable and does not bubble.

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

js
addEventListener("payerdetailchange", async (event) => {});

onpayerdetailchange = async (event) => {};

Event type

A PaymentRequestUpdateEvent. Inherits from Event.

Event PaymentRequestUpdateEvent

Event properties

Although this event type is PaymentRequestUpdateEvent, it doesn't implement any property that is not already on Event.

Examples

In the example below, onpayerdetailchange is used to set up a listener for the payerdetailchange event in order to validate the information entered by the user, requesting that any mistakes be corrected

js
// Options for PaymentRequest(), indicating that shipping address,
// payer email address, name, and phone number all be collected.

const options = {
  requestShipping: true,
  requestPayerEmail: true,
  requestPayerName: true,
  requestPayerPhone: true,
};
const request = new PaymentRequest(methods, details, options);
const response = request.show();

// Get the data from the response

let {
  payerName: oldPayerName,
  payerEmail: oldPayerEmail,
  payerPhone: oldPayerPhone,
} = response;

// Set up a handler for payerdetailchange events, to
// request corrections as needed.

response.onpayerdetailchange = async (ev) => {
  const promisesToValidate = [];
  const { payerName, payerEmail, payerPhone } = response;

  // Validate each value which changed by calling a function
  // that validates each type of data, returning a promise which
  // resolves if the data is valid.

  if (oldPayerName !== payerName) {
    promisesToValidate.push(validateName(payerName));
    oldPayerName = payerName;
  }
  if (oldPayerEmail !== payerEmail) {
    promisesToValidate.push(validateEmail(payerEmail));
    oldPayerEmail = payerEmail;
  }
  if (oldPayerPhone !== payerPhone) {
    promisesToValidate.push(validatePhone(payerPhone));
    oldPayerPhone = payerPhone;
  }

  // As each validation promise resolves, add the results of the
  // validation to the errors list

  const errors = await Promise.all(promisesToValidate).then((results) =>
    results.reduce((errors, result), Object.assign(errors, result)),
  );

  // If we found any errors, wait for them to be corrected

  if (Object.getOwnPropertyNames(errors).length) {
    await response.retry(errors);
  } else {
    // We have a good payment; send the data to the server
    await fetch("/pay-for-things/", { method: "POST", body: response.json() });
    response.complete("success");
  }
};

await response.retry({
  payer: {
    email: "invalid domain.",
    phone: "invalid number.",
  },
});

addEventListener equivalent

You could also set up the event handler using the addEventListener() method:

js
response.addEventListener("payerdetailchange", async (ev) => {
  // …
});

Specifications

Specification
Payment Request API
# dfn-payerdetailchange

Browser compatibility

BCD tables only load in the browser

See also