Ajax dynamic form validation (reading from DB)

[sfchun]

Hello ,

everyone, i found some codes on the web showing different kind of form validation, but i couldn't find the one i need

here is what is expected from the (ajax?) code

- The form contain only one input box, where i'll type a Name.
- when i'm typing, it checks dynamically (in real time) from the database if it does not already exists.
- while it exists, a little comment says : Name already exists
- when it's ok it says : Name is ok
- then i can submit.

It's easy to explain and understand, but not to code
Thanks a lot for any help


PS : I found the following code, but it's ASP code, i would prefer not to use ASP.
http://encosia.com/2007/07/02/aspnet...king-via-ajax/