JSFiddle - React, Tailwind, and code Playground
by mendesjuan
HTML
<script src="http://rangy.googlecode.com/svn/trunk/currentrelease/rangy-core.js"></script>
<div>
some text
<span> child <b> some bold</b> </span> some more text
</div>
JavaScript
var textNode = $("span")[0].childNodes[0];
$("div").has(textNode);