title: JavaScript function not found on jsfiddle
body: <p>Very simple minimal jsfiddle example:</p>
  
  <p><a href="https://jsfiddle.net/a9f2j4xo/" rel="nofollow noreferrer">https://jsfiddle.net/a9f2j4xo/</a></p>
  
  <p>Clicking the button should invoke the <code>Bla()</code> function.</p>
  
  <p>When I click the button the console says </p>
  
  <pre><code>ReferenceError: Bla is not defined.
  </code></pre>
  
  <p>Who or what is malfunctioning here, jsfiddle or my brain?</p>