JSFiddle - React, Tailwind, and code Playground

HTML

<div id="div1">div1</div>
<div id="div2">div2</div>

JavaScript

document.addEventListener('DOMContentLoaded', () => {
  //if (test) {
  	document.getElementById('div1').style.display = 'block';
    document.getElementById('div2').style.display = 'none';
  //}
});