Alert message not popped up after using Array.concat method
<p>I tried the following code in <code>IE9, Chrome</code>. But it is not working in both browsers.</p>

<p>In <code>Firefox</code>, it is working fine</p>

<pre><code>&lt;script type="text/javascript"&gt;
    var first = ['a','b','c','h','i','j'];
    var second = ['d','e','f','g'];
    var insertPosIndex = 3;
    first.splice.apply(first, Array.concat(insertPosIndex, 0, second));
    alert(first);
&lt;/script&gt;
</code></pre>

<p>I am expecting the output as <code>a,b,c,d,e,f,g,h,i,j</code></p>
