get the serverside control id in javascript in asp.net?
<p>I have asp:ImageButton in asp:table.
I want to get the id of button in javascript and I want to enabled the button based on conditon. How cloud I acheive.
I tried as below.</p>

<pre><code>var btn;
btn = document.getElementById('&lt;%= generateRptbtn.ClientID%&gt;').value;
btn.enabled = true;
</code></pre>

<p>But I'm getting empty as btn value.</p>
