How to add optional character in an Input mask

Is there a character you can use as optional in an input mask?

Example would be I want the user to input a number with one digit after the decimal point.

#.# would work until they might need to enter 10.5.

Thanks

Hi,

Thank you for reaching out to us.
Please try using [#] brackets for optional characters.

Also, there is a Masked Input widget available. I'm not sure if it would suit your needs, but please give it a try:
https://www.jotform.com/widgets/masked-input

Please let us know how it goes, and if there is anything we are happy to help you further!

Best Regards,