A one liner to get the accurate string representation of a multidimensional array in Javascript
<p>Observe:</p>

<pre><code>&gt; var x=[[1,2],[3,4]]
&gt; x
[ [ 1, 2 ], [ 3, 4 ] ]
&gt; x + ""
1,2,3,4
&gt; x.toString()
1,2,3,4
&gt;
</code></pre>

<p>I am looking for a one liner to get something like <code>"[[1,2],[3,4]]"</code>. </p>

<p>Thanks.</p>
