Other demos in this series (for more details, go to my blog post):
  1. Test a form without attributes and the single input is not named.
  2. Test a form without attributes and the single input is named.
  3. Test a form without attributes and two named inputs - does not work!
  4. Test a form without attributes and two named inputs with a submit button - that fixes it!
  5. Test a form with "action" set to empty string (""), method is "POST", and the input is named.
  6. Test several different forms mixed with query strings in the "action"
Take a look at the URL in your browser's address bar! There's no query string.

This button uses 

<form action="?color=blue" method="POST">

This button uses 

<form action="?color=red" method="POST">

This button uses 

<form action="" method="POST">

This button uses 

<form action="?" method="POST">