PromiseRejectionEvent()

The PromiseRejectionEvent() constructor returns a newly created PromiseRejectionEvent, which represents events fired when a JavaScript Promise is rejected.

Syntax

new PromiseRejectionEvent(type, {
  promise: somePromise, 
  reason : someValue
});

Parameters

The PromiseRejectionEvent() constructor also inherits arguments from Event().

type

A string representing the name of the type of the PromiseRejectionEvent. This is case-sensitive and must be one of "rejectionhandled" or "unhandledrejection".

promise

The Promise which was rejected.

reason

Any value or Object which represents the reason the promise was rejected.

Specifications

Browser compatibility

See also

• Promise
• PromiseRejectionEvent