title: Run functions randomly
body: <p>I have an array that includes some functions and it looks like this:</p>
  
  <pre><code>var all_questions = [
      show_question(1, 1),
      show_question(2, 1),
      show_question(3, 1),
  ];
  </code></pre>
  
  <p>I would like to run those functions into that array randomly. How can I do that?</p>