JSFiddle - React, Tailwind, and code Playground

by techiedelight

HTML

<div id="outerdiv" class="container"></div>

CSS

.container {
  font: 15px 'Exo 2', sans-serif;
}

JavaScript

var div = document.getElementById('outerdiv');
if (div.classList.contains('container')) {
  alert('Class exists');
} else {
  alert('Class does not exist');
}