JSFiddle - React, Tailwind, and code Playground

by aaccioly

HTML

<script src="http://momentjs.com/downloads/moment-with-langs.min.js"></script>
<div id="clock" />

JavaScript

var now = new Date();

function startInterval() {
    setInterval(updateTime, 1000);
}
startInterval(); //start it right away
function updateTime() {
    var nowMS = now.getTime();
    nowMS += 1000;
    now.setTime(nowMS);
    var clock = document.getElementById('clock');
    if (clock) {
        clock.innerHTML = moment(now).format('HH:mm:ss');
    }
}