JSFiddle - React, Tailwind, and code Playground

HTML

<img id="thumbnail" src="" alt="Thumbnails" />

JavaScript

var images = ['http://static.arstechnica.net/assets/2010/07/newspapers_ars-thumb-133x75-15341-f.jpg', 'http://static.arstechnica.net/assets/2010/09/zombie-safari-ars-thumb-133x75-16209-f.jpg', 'http://static.arstechnica.net/assets/2010/02/cell_phone_junk_waste_ars-thumb-133x75-12242-f.jpg', 'http://static.arstechnica.net/assets/2009/03/iphone_all_you_can_eat-thumb-133x75-3973-f.png', 'http://static.arstechnica.net/assets/2010/10/kid-on-computer-thumb-133x75-17527-f.jpg'];

function createCookie(name,value,days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        var expires = "; expires="+date.toGMTString();
    }
    else var expires = "";
    document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for(var i=0;i < ca.length;i++) {
        var c = ca[i];
        while (c.charAt(0)==' ') c = c.substring(1,c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
    }
    return null;
}

var imageCount = parseInt(readCookie('image'), 10);
if(isNaN(imageCount)){
    imageCount = 0;
}
$('#thumbnail').attr('src', images[imageCount % images.length]);
createCookie('image', imageCount + 1, 30);