Regular Expressions 101

Explanation

Pro

Non-Capturing Group(?:^|\D)

1st Alternative^

^start of line

2nd Alternative\D

\Dany character that's not a digit

Group 1(\d{14})

\d{14}a digit, repeated exactly 14 times

Non-Capturing Group(?:\D|$)

1st Alternative\D

\Dany character that's not a digit

2nd Alternative$

$end of line

Global pattern flags

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

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

Detailed match information will be displayed here automatically.

25 tokens

(?:^|\D)(\d{14})(?:\D|$)

New

12345678901234*300 OK

12345678901234x21 OK

*123456789012345*300 NOT OK

12345678901234 OK

123456789012345 NOT OK

12345678901234*300 OK

12345678901234x21 OK

*123456789012345*300 NOT OK

12345678901234 OK

123456789012345 NOT OK