Regex max 100 2 digits-CodePudding

I want to do a regex to have a maximum number of 100 with 2 decimals

I made the following regex:

^\d *\,\d{0.2}$

my problem : I can only put a comma (ex: 100,00) but if I put a dot it does not work (100.00) i tried to change my regex with ^\d *\,.\d{0.2}$ but i have the same problem

how can I do ?

CodePudding user response：

You may try:

^(?:[1-9]?[0-9]|100)(?:[.,]\d{1,2})?$

This matches a whole number component of between 0 and 100, with optional decimal component.

^
(?:
    [1-9]?[0-9]   match 0 to 99
    |             OR
    100           match 100
)
(?:[.,]\d{1,2})?  match an optional decimal component (1 or 2 digits)
$