JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://www.linkexchanger.su/example_jquery/js/jquery.cookie.js"></script>
<div id="stateLog">
Log goes here...
</div>

JavaScript

var lastState = 0;

cookieTimer();

function cookieTimer()
{
    var t = $.cookie('state');
    if(t != lastState)
    {
        lastState = t;
        $('#stateLog').append('<div>New state: ' + t + '</div>');
    }
    window.setTimeout(cookieTimer, 500);
}