title: JSFiddle.net Am I using this correctly?
body: <p>I put this code in the JavaScript box on www.jsfiddle.net and hit "run," but nothing happened. It works fine when I test it in Firebug, so why not jsfiddle.net  Am I using jsfiddle.net incorrectly?</p>
  
  <pre><code>String.prototype.reverse = function() {
  return Array.prototype.reverse.apply(this.split('')).join('');
  }
  
  "box".reverse();
  </code></pre>
  
  <p>Here I'm trying to save a fiddle. I click run and it doesn't work. </p>
  
  <p><a href="http://jsfiddle.net/mjmitche/qnjP3/" rel="nofollow">http://jsfiddle.net/mjmitche/qnjP3/</a></p>