JSFiddle - React, Tailwind, and code Playground

by Anderson Barreto Furlan

HTML

<div id="classe">
    <div>1</div>
    <div>2</div>
    <div>3</div>
    <div>4</div>
</div>

JavaScript

var minhaClasse = document.getElementById('classe');
alert(minhaClasse.children.length);