JSFiddle - React, Tailwind, and code Playground

by Alphonsio

HTML

<pre id="output"></pre>

CSS

body {
  background-color: #f0db4f;
}

JavaScript

let arr = [1, 2, 3, 4];

arr.reduce((acc, value) => {
  document.getElementById('output').append(value + '\n');
  return acc;
}, 0);