What does this Javascript code mean?
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/2851404/what-does-options-options-mean-in-javascript">What does &ldquo;options = options || {}&rdquo; mean in Javascript?</a>  </p>
</blockquote>



<p>Looking at the YouTube source...</p>

<pre><code>var yt = yt || {};
</code></pre>

<p>Does that mean.. set <code>yt</code> to <code>yt</code> if <code>yt</code> exists, else create a new object?</p>

<p>If that's the case, I didn't think you can put a condition when declaring a variable.</p>
