JSFiddle - React, Tailwind, and code Playground
by nevkatz
HTML
<div id="test" class="one two three">
Nevin
</div>
JavaScript
let el = document.getElementById('test');
let arr = Array.from(el.classList);
console.log(arr);
let r = arr.find(x => x.includes('o'));
let obj = {};
obj.el = el;
obj.el.textContent = 'Katz';