promise

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The promise read-only property of the PromiseRejection returns the ID of the Promise that the current notification is about.

Syntax

JavaScript
var myPromiseRejectionId = myPromiseRejection.promise;

Value

A DOMString that represents the promise ID.

Example

JavaScript
var myPromiseRejection = new PromiseRejection();
var myPromiseRejectionId = myPromiseRejection.promise;

Specifications

Specification Status Comment
Unhandled Rejection Tracking Browser Events
The definition of 'PromiseRejectionEvent' in that specification.
Editor's Draft Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 49.0 45.0 (45.0) No support ? No support
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support 49.0 45.0 (45.0) (Yes) No support ? No support 49.0

See also

License

© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/promiserejection/promise

API Experimental Interface Promise PromiseRejection Property Reference