Im trying to make the user type his username, but I don't want him to be able to set characters other than letters and numbers.
Using a regex filter would make it way more easier to check. But since we don't have that, I wanted to know any way to do it ?
The only way I found is to search a character into a text like that for a space : http://prntscr.com/ilwju2
And so if the variable Error1 is >=0 then I can tell there is a space, but doing that for all character, I don't think that's the best way; or it would be like way too much variable to check each characters that are not letters or number.
Is there any way to do so ? Thanks