JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="da">
    <head>
        <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" />
        <meta http-equiv="content-language" content="da" />
        <meta name="robots" content="index,follow" />
        <meta name="keywords" content="asp,php,java,javascript,html,sql,structured,query,language,databaser,mysql,postgresql,mssql,xml,css,style,sheet,sheets,xhtml,dhtml,w3c,p3p,p2p,linux,windows,w2k,apache,iis,active,server,pages,web,webserver,.net,vb,visual,basic,community,programmering,design,support" />
        <meta name="description" content="Skandinaviens st&oslash;rste IT-Community: Sp&oslash;rg og f&aring; svar p&aring; alt indenfor IT" />
                <title>Eksperten - Spørgsmål - Tilføje ekstra IDs til fungerende script.</title>
        <link href="/images/exp_fav.ico" rel="SHORTCUT ICON" />
        <link rel="stylesheet" type="text/css" media="screen" href="/css/sitelayout.css" />
        <link rel="stylesheet" type="text/css" media="screen" href="/css/blocks.css" />
        <link rel="stylesheet" type="text/css" media="screen" href="/css/jobs.css" />
        <script type="text/javascript" src="/common/javascript/prototype.js"></script>
        <script type="text/javascript" src="/common/javascript/scriptaculous/scriptaculous.js"></script>
        <script type="text/javascript" src="/common/javascript/idgtracker.js"></script>
        <script type="text/javascript" src="/common/javascript/jquery/jquery.js"></script>
        <script type="text/javascript" src="/common/javascript/jquery/jquery_ui.js"></script>
        
        <script type="text/javascript" src="/common/javascript/openads.js"></script>
        <script type="text/javascript" src="/common/javascript/common.js"></script>
        <script type="text/javascript" src="/javascript/common.js"></script>
       ...

CSS

#punkt2{display:none;}

JavaScript

var start = new Date();
console.log(start + ":" + start.getUTCMilliseconds() )
//jQuery("*").children().css("border", "1px solid red");
var performancekilleren = jQuery("*[class]").children().size() + jQuery("*").children().size(); //vi tæller alle de onde noder..
var end = new Date();
console.log(end + ":" + end.getUTCMilliseconds() )
console.log("Ole der er " + performancekilleren + " elementer i DOM, det tog hele " + (end - start) + "ms.");