puppeteer/website/versioned_docs/version-19.8.0/api/puppeteer.eventemitter.once.md
release-please[bot] dcfec6dbbd
chore: release main (#9863)
Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
2023-03-24 11:22:06 +01:00

846 B

sidebar_label
EventEmitter.once

EventEmitter.once() method

Like on but the listener will only be fired once and then it will be removed.

Signature:

class EventEmitter {
  once(event: EventType, handler: Handler<any>): EventEmitter;
}

Parameters

Parameter Type Description
event EventType the event you'd like to listen to
handler Handler<any> the handler function to run when the event occurs

Returns:

EventEmitter

this to enable you to chain method calls.