copying session values to input fields

Question

I dont understand why the following code is not working. I save some inputs values to sessions. In the next page, I want users be able to copy these values to input fields.

$(function() { $("input#copyshipping").click(function(){

    if ($("input#copyshipping").is(':checked'))

    {  
        // Checked, copy values  
        $("input#BillingFirstName").val("<%=Session("ShippingFIRSTNAME")%>");

        $("input#BillingLastName").val("<%=Session("ShippingLASTNAME")%>");

      $("input#BillingAddress1").val("<%=Session("ShippingADDRESS1")%>");

        $("input#BillingAddress2").val("<%=Session("ShippingADDRESS2")%>");

        $("input#BillingCity").val("<%=Session("ShippingCITY")%>");

      $("input#BillingState").val("<%=Session("ShippingSTATE")%>");

        $("input#BillingCountry").val("<%=Session("ShippingPOSTALCODE")%>");

      $("input#BillingPostalCode").val("<%=Session("ShippingCOUNTRY")%>");

    } else {  
        // Clear on uncheck  
        $("input#BillingFirstName").val("");  
      $("input#BillingLastName").val("");  
      $("input#BillingAddress1").val("");  
        $("input#BillingAddress2").val("");  
      $("input#BillingCity").val("");  
      $("input#BillingState").val("");  
        $("input#BillingCountry").val("");  
      $("input#BillingPostalCode").val("");

  }    });  });

Answer 1

Why not just echo the session data directly into the inputs if the checkbox is checked? There's no reason to echo it into the JavaScript code and then have jQuery populate the form.

Also, this current setup will fail if the user has JavaScript disabled.

Answer 2

Looking at the source code, it appears that the textboxes do not have id attributes, only name attributes. When you say, for example, $("input#BillingFirstName"), the "#" indicates an ID, and there isn't one there.

Either add an id, or use $("input[name='BillingFirstName']). I recommend adding the id; it's a faster selector.