event-class-es6

event-class-es6 is an ES6 module providing event communication to ES6 classes.

Installation

npm install --save event-class-es6

Example

import EventClass from "event-class-es6"
 
class EventTest extends EventClass {}
 
const event = new EventTest();
 
const cb = event.on("event-on", () => {
    console.log("I've been called");
});
 
event.once("event-once", () => {
    console.log("I will be called once");
});

event.emit("event-on");
"I've been called"
event.emit("event-on");
"I've been called"
event.off("event-on", cb);
event.emit("event-name");
event.emit("event-once");
"I will be called once"
event.emit("event-once");
 

API

.on(event, listener)

---

This will register the given listener to the given event, multiple listeners can be added to the same event.

.once(event, listener)

---

Same as .on but will only calls the listener once for the given event.

.off(event, [listener=undefined])

---

Removes the given listener from listening to the given event. If listener is undefined, all listeners for the given event will be removed.

.emit(event, [...arguments])

---

This will call every listeners registered for this given event with the given arguments.