JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#" class="link">Link 1</a>
<a href="#" class="link">Link 2</a>

CSS

a, a:visited { color:black }
a.link.active { color:grey; }

JavaScript

$(function() {
   $('a.link').click(function() {
       $('a.link').removeClass('active');
       $(this).addClass('active');
   });
});