JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
        <title>IE8 and :visible</title>
        <script type="text/javascript" src="http://code.jquery.com/jquery-1.6.4.min.js"></script>
    </head>
    <body>
        
        <p>IE8 and :visible</p>
        <p><span id="result">Testing... failed?</span></p>
        
    </body>
</html>

JavaScript

$(function() {
    var $window = $(window);
    var visible = $window.is(':visible');
    $('#result').html('Results: ' + visible);
});