JSFiddle - React, Tailwind, and code Playground

HTML

<h3>Island Trading</h3>
<div class=ex>
    <button>Hide me</button>
  <div class=address>
    <p>Contact: Helen Bennett<br> 
    Garden House Crowther Way<br>
    London</p>
  </div>
</div>

<h3>Paris spécialités</h3>
<div class=ex>
<button class="hide">Hide me</button>
<div class=address>
<p>Contact: Marie Bertrand<br> 
265, Boulevard Charonne<br>
Paris</p>
</div>
</div>

JavaScript

$("button").on("click", function(){
    alert('click');
  });