JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
  <head>
    <title>Test Rails Application</title>
    <style type='text/css'>.application h1 {
  color: lime; }
</style>
  </head>
  <body>
    <h1>Hello from applicaiton.html.haml</h1>
    <div class='application'><h1>Hello World</h1>
<input onclick='show_alert()' type='button' value='Show alert box' />
</div>
  </body>
</html>

CoffeeScript

root = exports ? this

root.show_alert = () -> alert("Hello! I am an alert box!")