JSFiddle - React, Tailwind, and code Playground

by erick

HTML

<div class="source">s1</div>
<div class="source">s2</div>
<div class="source">s3</div>

CSS

.source { display:none }

JavaScript

var divs = document.getElementsByClassName('source');
for(var i=0; i<divs.length; i++) { 
  divs[i].style.display='block'
}