PromiseRejectionEvent.reason

The PromiseRejectionEvent.reason read-only property is any JavaScript value or Object which provides the reason passed into Promise.reject(). This in theory provides information about why the promise was rejected.

Syntax

JavaScript
reason = PromiseRejectionEvent.reason

Specifications

Specification Status Comment
WHATWG HTML Living Standard
The definition of 'PromiseRejectionEvent.reason' in that specification.		 Living Standard Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 49 No support No support No support No support
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support No support No support No support No support

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/promiserejectionevent/reason

API Events events HTML DOM JavaScript PromiseRejectionEvent Promises Property reason Reference