JSFiddle - React, Tailwind, and code Playground

HTML

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">

        <title>Animacion basica con setTimeout </title>
            <link rel="stylesheet" href="css/css.css" type="text/css"/>
        </head>
 <script src="js.js"></script>       
        <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
      <body>
        <div id="caja">
            <br><br><br>
            <h2>Animación básica utilizando la funcion setTimeout con un alert de 6 segundos </h2>
              </div>
        <input type="button" value="boton" id="boton" onclick="$('div').hide(2000);"/>

    </body>

</html>

CSS

body {
                background-color: blue;
            }

            #caja {
                background-color: white;
                width: 300px;
                height: 250px;
            }

JavaScript

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js">
</script>
<script>
        function f() {
            alert('Animacion setTimeout')
        }
        setTimeout(f, 6000)

</script>