JSFiddle - React, Tailwind, and code Playground

JavaScript

var universe;
	
	$(function() {
		universe = new Universe();
		
		universe.timeStart();
	});
	
	function Universe() {		
		this.timer = 0;
		this.tick = 0;
		this.timeStart = function(){
			this.timer = setInterval(this.timeForward, 500);
		};
		this.timeStop = function() {
			clearInterval(this.timer);
		};
		this.timeForward = function(){
			this.tick++;
			console.log(this.tick);
		};
	}