sharepoint content query webpart: hide empty column with jquery

Question

I want to hide a list column in editform.aspx

</script>
<script language="JavaScript">
$(document).ready(function() 
{ $('nobr:contains("columnname")').closest('tr').hide()  });
</script>

It works. But now I want to hide it, if there is no value. How to do this?

Answer 1

$(document).ready(function() 
{ if ($('nobr:contains("columnname")').val() == "")
  {
    $('nobr:contains("columnname")').closest('tr').hide()
  }  
});