JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.microsoft.com/ajax/jquery.validate/1.7/jquery.validate.js"></script>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/ui-lightness/jquery-ui.css">
<h2>name</h2>
<p>john</p>
<h2>address</h2>
<p>street 1</p>
<h3>email</h3>
<p>jong@site.com</p>

JavaScript

$.extend($.expr[':'], {
    textIs: function(elem, i, attr) {
        return ($.trim($.text([elem])) === attr[3]);
    }
});

$('h3:textIs(email)').next().css('background','yellow');