JSFiddle - React, Tailwind, and code Playground

by id0

HTML

<script src="https://cdn.jsdelivr.net/npm/dayjs/dayjs.min.js"></script>
<div class="placeholder1"></div>
<div class="placeholder2"></div>

JavaScript

const d = new Date();

const f1 = dayjs(d).format();
document.querySelector('.placeholder1')
 .textContent = f1; 

const f2 = dayjs(d).format('YYYY-MM-DD HH:mm:ss ZZ');
document.querySelector('.placeholder2')
 .textContent = f2;