jQuery Forum

I'm running some very simple validation using javascript and an alert message to make sure there is a value in two fields, if not then pop-up a simple alert telling the user. This should be really easy but will only work for some reason with one variable (firstname) and not two variables (lastname).

2. function ajaxNext2(){
4. var product = jQuery("select[name='product']").val();
5. var quantity = jQuery("input[name='quantity']").val();
6. var print_front = jQuery("select[name='print_front']").val();
7. var print_back = jQuery("select[name='print_back']").val();
8. var embroidery = jQuery("select[name='embroidery']").val();
9. var embroided_names = jQuery("select[name='embroided_names']").val();
10. var printed_names = jQuery("select[name='printed_names']").val();
11. var firstname = jQuery("input[name='firstname']").val();
12. var lastname = jQuery("input[name='lastname']").val();
13. var email = jQuery("input[name='email']").val();
14. var phone = jQuery("input[name='phone']").val();
15. var uni = jQuery("input[name='uni']").val();
16. var reqby = jQuery("input[name='reqby']").val();
17. var message = jQuery("textarea[name='message']").val();
18. var unit_price = jQuery("input[name='unit_price']").val();
19. var total_price = jQuery("input[name='total_price']").val();
22. if (firstname!=null && lastname!=null) {
23. alert('Please complete required fields');
24. } else {
25.                  alert('Proceed');
26.       }
27. }

Would be extremely grateful for some help. Have no idea why this does not work?

The code is located in a javascript file.

Many thanks