Javascript: push an entire list?
<p>Is there a built in way to append one list into another like so:</p>

<pre><code>var a = [1,2,3];
a.append([4,5]);
// now a is [1,2,3,4,5];
</code></pre>

<p><code>concat()</code> does something similar but returns the result. I want something that modifies the existing list like <code>push()</code></p>
