Input element format - no numbers

[ada]

You can find some solutions here:

How do you limit special characters in the input field for usernames?

I basically want to restrict users from entering in the input field for usernames so question marks, commas, number signs, spaces, etc, are used for the username. Strictly only letters and numbers. Thanks in advance!

Also take a look at this template if you are familiar with javascript and css.

Feel free to dm me if you got any questions.

Cheers, Ada.