EventEmitter

Publish-subscribe class.

Class

Methods

Method	Parameters	Description	Default
on	Subscribe to event	Subscribe to event, pass event name and callback	None
once	Subscribe to event once	Subscribe to event once, trigger once then auto unsubscribe	None
off	Unsubscribe from event	Unsubscribe from event, pass event name and callback	None
emit	Trigger event	Trigger event, requires event name	None

Example

import { Subscribe } from 'ranuts';

const subscribe = new Subscribe();

// Subscribe to event 1
subscribe.on('event', () => {
  console.log(1);
});
// Subscribe to event 2
subscribe.on('event', () => {
  console.log(2);
});
// Subscribe to event 3
const eventThree = () => {
  console.log(3);
};
subscribe.on('event', eventThree);
// Subscribe to event 4, need to pass parameters
subscribe.on('event', (num) => {
  console.log(num);
});
// Trigger event, pass parameters
subscribe.emit('event', 4);
// console.log(1) console.log(2) console.log(3) console.log(4)

// Unsubscribe event three
subscribe.off('event', eventThree);

// Subscribe once, auto unsubscribe after trigger
subscribe.once('other', () => {
  console.log(5);
});