JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.2.1.js"></script>
<span id="timer"></span>

JavaScript

let utcTime = Date.now() / 1000 | 0;
    
   var x = setInterval(function () {
       utcTime = utcTime+1;
       console.log(utcTime)
   },1000);