Event emitter, the ScratchJr packages make a lot use of EventEmitter to decouple.
const emitter = new EventEmitter();
const cb = (msg) => {
// do something
console.log(msg);
};
// register event listener
emitter.on("hello", cb);
// fire the event
emitter.emit("hello", "world");
// unregister the listener
emitter.off("hello", cb);
For more usage please see the official document https://github.com/primus/eventemitter3.
Fires an event with args, this will call each of the listeners registered for the given event.
| Name | Type | Description |
|---|---|---|
event |
T |
the event id |
args |
any |
related arguments |
| Type | Description |
|---|---|
| boolean |