JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.1.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.1.0/css/bootstrap.min.css">
<button class='btn'>Hello</button>

JavaScript

$('button').click(function() {
    var width = $(this).css('width');
    var height = $(this).css('height');
    //alert(width);
    $(this).html('Hello, World!');
    var newWidth = $(this).css('width');
    $(this).css({'width': width, 'height': height});
    $(this).animate({'width': newWidth}, 1000);
});