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puppeteer/website/versioned_docs/version-10.0.0/puppeteer.eventemitter.once.md
TASNEEM KOUSHAR 34ff00e2fe
chore(docs): generate site for v10.0.0 
* fix: added parts of website

* fix: removed unnecessary lines

* fix: updated contributing.md

* fix: added parts of sidebar

* fix: added all APIs

* fix: added version 10.0.0

Co-authored-by: Jack Franklin <jacktfranklin@chromium.org>
2021-08-09 09:57:14 +01:00

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Home > puppeteer > EventEmitter > once

EventEmitter.once() method

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

Signature:

once(event: EventType, handler: Handler): EventEmitter;

Parameters

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

Returns:

EventEmitter

this to enable you to chain method calls.