title: how to fill asp.net hidden field with Jquery
body: <p>im trying this format:</p>
  
  <pre><code>$("#&lt;%= hfWidth.UniqueID %&gt;").val($("#drag").attr("offsetWidth"));
  </code></pre>
  
  <p>to fill the hidden field with client-side values</p>
  
  <p>but when I do postback, the values doesn't seem to be saved.</p>
  
  <p>help</p>