hasClass doesn't work in my js code?
<p>I want to use <code>hasClass</code> in the following code, but that doesn't work for me, please see my demo in jsfiddle and tell me, what do I do wrong?</p>

<pre><code>&lt;span&gt;
    &lt;input type="text" name="relation" class="IdRelation"&gt;
&lt;/span&gt;
​

if ($('span').hasClass('IdRelation')) {
  alert("ok");
}​
</code></pre>

<p><a href="http://jsfiddle.net/6Bwkv/" rel="nofollow">DEMO</a></p>
