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

The id read-only attribute of the PaymentRequest interface returns a unique identifier for a particular PaymentRequest instance.

When constructing an instance of the PaymentRequest, you are able to supply an custom id via  PaymentDetailsInit dictionary's id member. If none is provided, the browser automatically sets the id value to a UUID.


This example shows how to give a PaymentRequest instance a custom id.

const details = {
  id: "super-store-order-123-12312",
  total: {
    label: "Total due",
    amount: { currency: "USD", value: "65.00" },
const request = new PaymentRequest(methodData, details);
console.log(; // super-store-order-123-12312

The id is then also available in the PaymentResponse returned from the show() method, but under the requestId attribute.

const response = await;
console.log(response.requestId ===;

// And in serialized form too
const json = response.toJSON(); 


var id =


A DOMString.


Specification Status Comment
Payment Request API
The definition of 'id' in that specification.
Candidate Recommendation Initial definition.

Browser Compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
idChrome Full support 60Edge Full support 16Firefox No support No
No support No
Notes Available only in nightly builds.
IE No support NoOpera Full support 47Safari Full support 11.1WebView Android No support NoChrome Android Full support 60Firefox Android No support No
No support No
Notes Available only in nightly builds.
Opera Android Full support 44Safari iOS Full support 11.3Samsung Internet Android Full support 8.0


Full support  
Full support
No support  
No support
See implementation notes.
See implementation notes.