Amazon Developer

Console

as

Settings

Sign out

Notifications

Alexa

Amazon Appstore

Ring

AWS

Documentation

Support

Contact Us

My Cases

Console

as

Vega Developer Docs

Get Started

Design and Develop

Publish

Reference

Support

EventHandler

EventHandler: (event?) => any

Should it return unknown? https://html.spec.whatwg.org/multipage/webappapis.html#eventhandler

Parameters

event?

Returns

any

Last updated: Feb 25, 2026