Javascript - check if key exists - if not create it, all in one line
<p>I'm looking for a one-liner way of checking if a key exists and if it doesn't create it.</p>

<pre><code>var myObject = {};

//Anyway to do the following in a simpler fashion?

if (!('myKey' in myObject))
{
    myObject['myKey'] = {};
}
</code></pre>