I would like to show the number of characters a user has typed into a Dialog Box as they type them OR give visual feedback when they have typed either 10 or 13 characters. Any way to do this?
The user is entering ISBN numbers for books and they have to be ISBN10 or ISBN13. I already check after the user hits enter for the right length of characters, but I would like to show them as they type so they get feedback before they hit enter. Anyway to do this?