Add validation to a form

I have a simple form at [login to view URL] I need the email and phone number form fields to have validation. The submit button also has some code attached to it when you click it. This code is for affiliate tracking and is shown below I need an extra parameter adding to the above URL string named saleid="xxxxxx" where xxxxxx is the value the user has entered for the 'name' form field. Summary. Add email and phone number validation Provide me with the affiliate snippet of code as shown above with the addition of the 'saleid' parameter so i can copy and paste it into the website design software i use.