Like our previous example, this page has a form called start at zero (for the first option).
Finally, the "Terms and Conditions" checkbox is validated.
For example, if your form has a box for the user to type their email address, you might want your form handler to check that they've filled in their address before you deal with the rest of the form.
There are two main methods for validating forms: (usually done using Java Script).
Now you know how to write a form validation script that can handle multiple form fields, including text boxes, radio buttons, drop-down lists and check boxes!