JSFiddle - React, Tailwind, and code Playground

HTML

<div class="test"></div>
<div class="test"></div>
<div class="test"></div>
<input type="button" class="button" value="get number">
<div class="test"></div>
<div class="test"></div>
<div class="test"></div>

JavaScript

jQuery('.button').on('click',function (){
    alert(jQuery(this).next().text());
});