JSFiddle - React, Tailwind, and code Playground

HTML

<div class="quadrado"></div>
<div class="quadrado"></div>
<div class="quadrado"></div>
<div class="quadrado"></div>

CSS

.quadrado{
    width: 100px;
    height:100px;
    background: green;
    display: block;
    margin-bottom: 20px;
}

.active{
    background: blue;
}

JavaScript

$(document).ready(function(){
   $('div').on('click',function(){
      $('div').removeClass('active');
      $(this).addClass('active');
    });
});