PaymentRequest.prototype.id
Experimental: 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. If none is provided, the browser automatically sets the id value to a UUID. 
Example
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(request.id); // 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 request.show(); console.log(response.requestId === request.id); // And in serialized form too const json = response.toJSON(); console.log(json.requestId,response.requestId, request.id);
Syntax
var id = paymentRequest.id
Value
A DOMString.
Specifications
| Specification | 
|---|
| Payment Request API # dom-paymentrequest-id | 
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 | |
| id | 60 | 16 | No Available only in nightly builds. | No | 47 | 11.1 | No | 60 | No Available only in nightly builds. | 44 | 11.3 | 8.0 | 
    © 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
    https://developer.mozilla.org/en-US/docs/Web/API/PaymentRequest/id