Question

i need a regex for: 123,456,789,123,4444,... basically comma separated values. The INT part can be 1-4 numbers long, followed by a comma…always in this form…

/^([0-9]{1,4})(\,)?$/

This obviously doesn’t work…

Thanks!

Answer 1

Try this:

/^[0-9]{1,4}(?:,[0-9]{1,4})*$/

This will match any comma separated sequence of one or more digit sequences with one to four digits. (?:…) is a so called non-capturing group that’s match cannot be referenced separately like you can with “normal” capturing groups (…).