JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ifedapoolarewaju.github.io/nojs-site/no.min.js"></script>
<button no-js on-click-toggle-class-self="red-bg">
  add class
</button>
<br><br>

CSS

.red-bg {
  background: red;
}

JavaScript

// no javascript