JSFiddle - React, Tailwind, and code Playground

HTML

<h1 id="log"></h1>

JavaScript

var log = $('log');
var count = 0;
var addDot = function(){

        this.set('text', this.get('text') + '555');
        count++;
};

var myPeriodical = addDot.periodical(50, log);

(function(){ $clear(myPeriodical); }).delay(4000);