JSFiddle - React, Tailwind, and code Playground
HTML
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.11.0/moment.js"></script>
<div id="datetime"></div>
JavaScript
var datetime = null,
date = null;
var update = function () {
date = moment(new Date())
datetime.html(date.format('dddd, MMMM Do YYYY, h:mm:ss a'));
};
$(document).ready(function(){
datetime = $('#datetime')
update();
setInterval(update, 1000);
});