JSFiddle - React, Tailwind, and code Playground

by Yann Brelière

HTML

<form>
<input id="lol"/>
</form>

CSS

.error {
    background-color: red;
}

JavaScript

var error = 'lol';
var $zone = $('#lol');
var zone = $zone.get(0);
if (zone.setCustomValidity) {
    zone.setCustomValidity(error);
} else {
    $zone.toggleClass('error', !!error);
    $zone.attr('title', error);
}