JSFiddle - React, Tailwind, and code Playground

HTML

<button onclick="start_animation()">Start Animation</button>
<button onclick="cancel_animation()">Cancel Animation</button>
<div id="box" style="height: 20px; width: 20px; background-color: red"></div>

JavaScript

var height = 20;
var width = 20;
var id = null;

function animation() {
    height += 5;
    width+=3;
    var element = document.getElementById("box");
    element.style.height = height + "px";
    element.style.width = width + "px";

    console.log(element.style.height);
    //inside the first frame, queue the execution of next frame.
    //only one callback is queued at a time. therefore queue is not exhausted.
    id = requestAnimationFrame(animation);
}

function start_animation() {
    //start the first frame
    id = requestAnimationFrame(animation);
}

function cancel_animation() {
    //cancel the latest frame.
    cancelAnimationFrame(id);
}