Regular Expressions 101

Pro

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

1st Alternative^

^start of line

2nd Alternative\D

\Dany character that's not a digit

Group 1(\d{10})

\d{10}a digit, repeated exactly 10 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{10})(?:\D|$)

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ISBN: 9789380658797, 9380658796

ISBN: 9789380658797, 9380658796