search for array inside an array
<p>I  need to search for the presence of an array inside an array. It is similar to jQuery.inArray function. </p>

<p>For </p>

<pre><code>var a = [ [1,2], [1,3] ];
console.log(  jQuery.inArray([1,3],a  ) )
</code></pre>

<p>I get -1 as ans. How to do this? </p>

<p>Thank you</p>
