JSFiddle - React, Tailwind, and code Playground

by Stalk

HTML

<span kakpopalo="123">something</span>
<pre id="log1"></pre>
<pre id="log2"></pre>

JavaScript

document.querySelector('#log1').innerHTML = 
    document.querySelector('span').getAttribute('kakpopalo')

$('#log2').html($('span').attr('kakpopalo'))