JSFiddle - React, Tailwind, and code Playground

HTML

<nav>
	<ul>
		<li><a href="#page1">Page 1</a></li>
		<li><a class="selected" href="#page2">Page 2</a></li>
		<li><a href="#page3">Page 3</a></li>
	</ul>
</nav>

JavaScript

alert($('.selected').parent().next('li').find('a').attr('href'))