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@antv/event-emitter

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@antv/event-emitter

event emitter for antvis.

  • 0.1.3
  • latest
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  • npm
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57
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What is @antv/event-emitter?

@antv/event-emitter is a lightweight and efficient event emitter library that allows you to create and manage custom events in JavaScript applications. It is part of the AntV visualization suite and is designed to be simple yet powerful, making it easy to integrate event-driven architecture into your projects.

What are @antv/event-emitter's main functionalities?

Event Emission

This feature allows you to emit events with a specific name and optional data payload. The emitted event can then be listened to by any registered listeners.

const EventEmitter = require('@antv/event-emitter');
const emitter = new EventEmitter();
emitter.emit('eventName', { key: 'value' });

Event Listening

This feature allows you to register listeners for specific events. When the event is emitted, the registered listeners are called with the event data.

const EventEmitter = require('@antv/event-emitter');
const emitter = new EventEmitter();
emitter.on('eventName', (data) => {
  console.log('Event received:', data);
});
emitter.emit('eventName', { key: 'value' });

Removing Event Listeners

This feature allows you to remove specific listeners for an event. This is useful for cleaning up and preventing memory leaks in your application.

const EventEmitter = require('@antv/event-emitter');
const emitter = new EventEmitter();
const listener = (data) => {
  console.log('Event received:', data);
};
emitter.on('eventName', listener);
emitter.off('eventName', listener);
emitter.emit('eventName', { key: 'value' });

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Package last updated on 10 Feb 2022

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