JSFiddle - React, Tailwind, and code Playground

by dife

HTML

<div id="txt"></div>

JavaScript

function startTime() {
     var today=new Date();
     var h=today.getHours();
     var m=today.getMinutes();
     var s=today.getSeconds();
     
     // add a zero in front of numbers<10
     m=checkTime(m);
     s=checkTime(s);
     document.getElementById('txt').innerHTML=h+":"+m+":"+s;
     
 }

 function checkTime(i){
 if (i<10) {
     i= "0" + i;
 }
     return i;
 }
 
 setInterval(function(){ 
 	startTime();
 }, 
 500);