Regular Expressions 101

Pro

Group 1(\d{1,3})

\d{1,3}a digit, repeated between 1 and 3 times

Group 2(\d{1,3})?

?repeats the group contents below at most once:

\d{1,3}a digit, repeated between 1 and 3 times

Group 3(\d{1,4})?

?repeats the group contents below at most once:

\d{1,4}a digit, repeated between 1 and 4 times

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

25 tokens

(\d{1,3})(\d{1,3})?(\d{1,4})?

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