JSFiddle - React, Tailwind, and code Playground
HTML
<div class="scope">
<div>
<a href="1">1</a>
</div>
<div>
<a href="2">2</a>
</div>
<div>
<a href="3">3</a>
</div>
<div>
<a href="4">4</a>
</div>
</div>
<a href="x">NOT THIS</a>
JavaScript
var $two = $('a[href="2"]');
var $all_a = $two.closest('.scope').find('a');
var a_index = $all_a.index($two);
var $followers = $all_a.slice(a_index+1);
$followers.css('background', 'red');