title: array join() method without a separator
body: <pre><code>var arr= ['g','o','o','d'];
  var arr2 = arr.join();
  </code></pre>
  <p>Arr2 will be &quot;g,o,o,d&quot;. I would like to get &quot;good&quot;. I know there are a million other ways to achieve this but was curious if there was a way with join.</p>