| <!doctype html> | |
| <form action="{{GET[action]}}"> | |
| <input type="text" name="name" value="value"> | |
| <input type="submit" value="Submit"> | |
| </form> | |
| <script> | |
| "use strict"; | |
| if (window.location.search.startsWith("?name=value")) { | |
| // The action pointed to ourself, so the form submitted something | |
| window.parent.success(window.location.href); | |
| } else { | |
| const form = document.querySelector("form"); | |
| form.submit(); | |
| } | |
| </script> |