JSFiddle - React, Tailwind, and code Playground

HTML

<div class="button">b1<div class="res">casuta1</div></div>
<div class="button">b2<div class="res">casuta2</div></div>
<div class="button">b3<div class="res">casuta3</div></div>
<div class="button">b4<div class="res">casuta4</div></div>

CSS

.res { display: none; }

JavaScript

jQuery(document).ready(function($) {
    $('.button').click(function() {
       $('.res').hide();
       $(this).children('.res').show();
    });
});