Regular Expressions 101

\w+any word character, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Positive Lookahead(?=(com|uk))

Group 1(com|uk)

1st Alternativecom

comthe literal text com (case sensitive)

2nd Alternativeuk

ukthe literal text uk (case sensitive)

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

Regular Expression

\w+\.(?=(com|uk))

New

1) domain.com/our-work/insights/tips-and-advice/2008/02/04/the-path-to-good-design-is-proper-analytics
2) subdomain.domain.com
3) im.domain.com/About.htm
4) domain.uk/help.htm

Extraction

1) domain.com/our-work/insights/tips-and-advice/2008/02/04/the-path-to-good-design-is-proper-analytics
2) subdomain.domain.com
3) im.domain.com/About.htm
4) domain.uk/help.htm