JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
</head>
<body>
  <p id="message">Message</p>
</body>
</html>

JavaScript

$(function() {
        if (window.localStorage.getItem("isNewSession")) {
            $("#message").text("Welcome back!");
        } else {
            $("#message").text("Welcome for the very first time!");
            window.localStorage.setItem('isNewSession', 'true');
        }
});