JSFiddle - React, Tailwind, and code Playground

HTML

<div id="message">
    <img src="http://www.jlg.com/images/layout/loadingGif.gif" />
</div>

JavaScript

$(document).ready(function (e) {
    function show_popup() {
        $('#message img').attr('src', 'http://cdn.thebarkpost.com/wp-content/uploads/2014/03/oie_5181838bU3HJXJp.gif');

    };
    window.setTimeout(show_popup, 3000); // 5 seconds
});