Then we will have a look at the possibilties for sending information over the Internet. First of all we want to create a simple script. The user has to write his name into the first and an e-mail address into the second element. You can enter anything into the form elements and then push the button. Also try to enter nothing and then push the button.
Any input is seen as valid input.
Of course, this does not prevent the user from entering any wrong name. The browser even accepts numbers. So this might not be a good check. The second form is a little bit more sophisticated. Try to enter a simple string - your name for example.