EventEmitter.on() method
Bind an event listener to fire when an event occurs.
Signature:
on(event: EventType, handler: Handler): EventEmitter;
Parameters
| Parameter | Type | Description |
|---|---|---|
| event | EventType | the event type you'd like to listen to. Can be a string or symbol. |
| handler | Handler | the function to be called when the event occurs. |
Returns:
this to enable you to chain method calls.