JSFiddle - React, Tailwind, and code Playground

by Stephan Wagner

HTML

<div onclick="console.log($(this).attr('data-test'))">undefined</div>

<div data-test="" onclick="console.log($(this).attr('data-test'))">empty</div>

<!-- this one will also return an empty value -->
<div data-test onclick="console.log($(this).attr('data-test'))">null</div>

<div data-test="value" onclick="console.log($(this).attr('data-test'))">value</div>

CSS

div {
    padding: 20px;
}