JSFiddle - React, Tailwind, and code Playground

by Paulpro

HTML

<div id="countdown"></div>

JavaScript

function countDownRound() {
    if(myRoundTimeRemaining >= 0){
        var secs = myRoundTimeRemaining;
        if(secs < 10)
        {
            secs = "0" + secs;
        }
        $("#countdown").html(':'+secs);
        CountdownTimer = setTimeout(countDownRound, 1000);
        myRoundTimeRemaining--;
    }
    else{
        $("#countdown").html('');
    }
}

var myRoundTimeRemaining = 15;
countDownRound();