Easy to use JS EventListener class

eventlistener.js

"use strict";

class EventListener {

	constructor () {

		// Declare variables
		this._onEvents = [];

		return this;
	};

	on (eventName, callback) {

		if (!eventName || !callback) { return; }
		else if (typeof eventName !== "string") { return ;}
		else if (typeof callback !== "function") { return; }

		this._onEvents.push({
			"name": eventName,
			"callback": callback
		});
	};

	onEvent (eventName) {
		console.log("New event:", eventName);
		
		const events = this._onEvents;

		for (var i = 0; i < events.length; i++) {
			
			let event = events[i];

			if (event.name == eventName) {
				event['callback']();
			}
		}
	}
};

module.exports = EventListener;