JSFiddle - React, Tailwind, and code Playground

by Alexander Tartmin

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/jquery-cookie/1.4.1/jquery.cookie.js"></script>

JavaScript

function someFn() {
    $('body').css('background-color', 'red');
}

var cookie = $.cookie('myCookie') // Переменная для проверки куки

if (!cookie) {
    $.cookie('myCookie', 'true');
}
else {
    someFn();
}