JSFiddle - React, Tailwind, and code Playground
by matthewbj
HTML
<div>This should change to a Paragraph</div>
<div class="myClass">This should not</div>
CSS
p {background-color:#333; color:#fff}
div {background-color:#c00; color:#fff}
JavaScript
$('div:not([class])').contents().unwrap().wrap('<p/>');