JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/dot-luv/jquery-ui.css">

JavaScript

var html = ""
        html += '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">'
        html += '<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">'
        html += '  <head>                                                        '
        html += '    <title>Sub Page to Parse</title>                            '
        html += '    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"><\/script>'
        html += '    <meta name="keywords" content="parent, html, parsing">      '
        html += '  </head>                                                       '
        html += '  <body>                                                        '
        html += '    <script type="text/javascript">                             '
        html += '      alert("im javascript");                                   '
        html += '      setTimeout(function() {                                   '
        html += '        $("body").css("background-color", "#ffaaaa")            '
        html += '      }, 400);                                                  '
        html += '    <\/script>                                                  '
        html += '    <div id="child_div"></div>                                  '
        html += '  </body>                                                       '
        html += '</html>'
            
        var meta = $(html).find("meta");
        alert(meta.attr("name"));
        var title = $(html).find("title");
        alert(title.html());