JSFiddle - React, Tailwind, and code Playground
HTML
<ul id="fos">
<li id="li1"></li>
<li id="li2">beer</li>
<li id="li3"></li>
<li id="li4"></li>
<li id="li5"></li>
</ul>
JavaScript
$('ul').each(function () {
alert($(':nth-child(2)', $(this)).text());
});