Regular Expressions 101

Explanation

Pro

1st Alternative\(pp\.\s+\d+(?:-\d+)?\)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

ppthe literal text pp (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\s+a Unicode whitespace character, repeated at least once

\d+a Unicode decimal digit, repeated at least once

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

?repeats the group contents below at most once:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d+a Unicode decimal digit, repeated at least once

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

2nd Alternative\b\d+(?:-\d+)?(?=(?:\s*,\s*\d+(?:-\d+)?)*\.)

\ba Unicode word boundary

\d+a Unicode decimal digit, repeated at least once

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

?repeats the group contents below at most once:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d+a Unicode decimal digit, repeated at least once

Positive Lookahead(?=(?:\s*,\s*\d+(?:-\d+)?)*\.)

Non-Capturing Group(?:\s*,\s*\d+(?:-\d+)?)*

*repeats the group contents below any number of times:

\s*a Unicode whitespace character, repeated any number of times

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\s*a Unicode whitespace character, repeated any number of times

\d+a Unicode decimal digit, repeated at least once

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

?repeats the group contents below at most once:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d+a Unicode decimal digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

\(pp\.\s+\d+(?:-\d+)?\)|\b\d+(?:-\d+)?(?=(?:\s*,\s*\d+(?:-\d+)?)*\.)

New

- Mitchell, J.A. (2017). Citation: Why is it so important. Mendeley Journal, 67(2), (pp. 81-95). 

- Denhart, H. (2008). Deconstructing barriers: Perceptions of students labeled with learning disabilities in higher education. Journal of Learning Disabilities, 40,41, 483-497.

(pp. 81). 
12-12
http://test.com/12-23

Usually the page numbers follow a commas and then there is a dot (like this: , 1-2. ) How can I change the code according to this? Same goes for when there is only one page listed , number. and the ` (pp. 12)` format.

Extraction

- Mitchell, J.A. (2017). Citation: Why is it so important. Mendeley Journal, 67(2), (pp. 81-95). 

- Denhart, H. (2008). Deconstructing barriers: Perceptions of students labeled with learning disabilities in higher education. Journal of Learning Disabilities, 40,41, 483-497.

(pp. 81). 
12-12
http://test.com/12-23

Usually the page numbers follow a commas and then there is a dot (like this: , 1-2. ) How can I change the code according to this? Same goes for when there is only one page listed , number. and the ` (pp. 12)` format.