title: jquery onblur empty textbox validation on asp:textboxes
body: <p>I have a series of asp:textboxes (about 30) which I wanted to validate if they are empty (when the user goes to other textbox), when the users leave them empty (on blur) I have found tutorials on the net however it is specified only to a few textboxes, how can I achieve this? </p>
  
  <pre><code>&lt;form id="form1" runat="server"&gt;
  
  &lt;asp:TextBox ID="txtLname" runat="server" placeholder="Last Name" BackColor="White" BorderColor="#C2C4CC" BorderStyle="Solid" Height="28px" Width="135px" title="Enter Your Last Name" onkeypress="return AllowAlphabet(event)" Enabled="False" TabIndex="4"&gt;&lt;/asp:TextBox&gt;
  </code></pre>