JSFiddle - React, Tailwind, and code Playground

by Michael Darmanin

HTML

<div id="choice"></div>

<div id="hidden">
Is number of building blocks a square number?
</div>

CSS

#hidden {display:none}

JavaScript

var isSquare = function(n){
  return Math.sqrt(n) === Math.round(Math.sqrt(n));
}


document.getElementById('choice').innerHTML = isSquare(4);