How to restrict an input to a variable amount of numbers only with PrimeFaces inputMask element

Question

I need to define something similar to this regex:

[0-9]{1, 5}

On a PrimeFaces element:

Answer 1

If you want or need to limit the length too, you could do something like this:

where the user can only enter 1 to 5 digits, or the following for four digits and so on

Prior to PrimeFaces 5.1: use placeHolder instead of slotChar (Issue 7324).