JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://www.viaata.com.br/site2/scripts/script.js"></script>
<script src="http://www.viaata.com.br/site2/scripts/jquery.countdown.js"></script>
<script src="http://code.jquery.com/jquery-1.7.1.min.js"></script>
<link rel="stylesheet" href="http://www.viaata.com.br/site2/css/jquery.countdown.css">
<link rel="stylesheet" href="http://www.viaata.com.br/site2/css/styles.css">
<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8" />        
        <!-- Our CSS stylesheet file -->
        <link rel="stylesheet" href="http://fonts.googleapis.com/css?family=Open+Sans+Condensed:300" />
        <link rel="stylesheet" href="assets/css/styles.css" />
        <link rel="stylesheet" href="assets/countdown/jquery.countdown.css" />
        
        <!--[if lt IE 9]>
          <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
        <![endif]-->
    </head>
    
    <body>

        <div id="countdown"></div>
        <p id="note"></p>
    </body>
</html>

JavaScript

/**
 * @name        jQuery Countdown Plugin
 * @author        Martin Angelov
 * @version     1.0
 * @url            http://tutorialzine.com/2011/12/countdown-jquery/
 * @license        MIT License
 */

(function($){
    
    // Number of seconds in every time division
    var dias    = 24*60*60,
        horas    = 60*60,
        minutos    = 60;
    
    // Creating the plugin
    $.fn.countdown = function(prop){
        
        var options = $.extend({
            callback    : function(){},
            timestamp    : 0
        },prop);
        
        var left, d, h, m, s, positions;

        // Initialize the plugin
        init(this, options);
        
        positions = this.find('.position');
        
        (function tick(){
            
            // Time left
            left = Math.floor((options.timestamp - (new Date())) / 1000);
            
            if(left < 0){
                left = 0;
            }
            
            // Number of days left
            d = Math.floor(left / dias);
            updateDuo(0, 1, d);
            left -= d*dias;
            
            // Number of hours left
            h = Math.floor(left / horas);
            updateDuo(2, 3, h);
            left -= h*horas;
            
            // Number of minutes left
            m = Math.floor(left / minutos);
            updateDuo(4, 5, m);
            left -= m*minutos;
            
            // Number of seconds left
            s = left;
            updateDuo(6, 7, s);
            
            // Calling an optional user supplied callback
            options.callback(d, h, m, s);
            
            // Scheduling another call of this function in 1s
            setTimeout(tick, 1000);
        })();
        
        // This function updates two digit positions at once
        function updateDuo(minor,major,value){
            switchDigit(positions.eq(minor),Math.floor(value/10)%10);
            switchDigit(positions.eq(major),value%10);
        }
      ...