Regular Expressions 101

Pro

\d+a digit, repeated at least once

Non-Capturing Group(?:.\d+)?

?repeats the group contents below at most once:

.any character (except for line terminators)

\d+a digit, repeated at least once

Non-Capturing Group(?:\w+)?

?repeats the group contents below at most once:

\w+any word character, repeated at least once

Global pattern flags

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

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

Detailed match information will be displayed here automatically.

25 tokens

\d+(?:.\d+)?(?:\w+)?

IEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n

IEEE 802.11a, IEEE 802.11ac, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n