javascript: is this a conditional assignment?
<p>From the google analytics tracking code:</p>

<pre><code>var _gaq = _gaq || [];
</code></pre>

<p>how does this work?</p>

<p>Is it a conditional variable value assignment?
Is it the same as saying:</p>

<pre><code>if( !(_gaq) ) {_gaq = []; }
</code></pre>

<p>?</p>
