eventemitter.once()

emitter.once(eventName, listener)

Adds a one time listener function for the event named eventName. This listener is invoked only the next time eventName is triggered, after which it is removed.

server.once('connection', (stream) => {
  console.log('Ah, we have our first user!');
});

Returns a reference to the EventEmitter so calls can be chained.

Links:

https://nodejs.org/dist/latest-v5.x/docs/api/events.html#events_emitter_once_eventname_listener

doc_Nodejs

2025-01-10 15:47:30

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