JSFiddle - React, Tailwind, and code Playground

by Yure Pereira

HTML

<li style="display:none;" id="12-05-2016">Para o dia: 12-05-2016
    
    <ul><li  id="08:00"> Esta hora esta indisponivel: 08:00</li></ul>

    <ul><li  id="09:00"> Esta hora esta indisponivel: 09:00</li></ul>

</li>

<div id="datatime"></div>

<li style="display:none;" id="13-05-2016">Para o dia: 13-05-2016

</li>

JavaScript

var pai = document.getElementById('12-05-2016'),
		filhos = pai.getElementsByTagName('li');