Regular Expressions 101

Group 1(https?:\/\/www\.google\.(?:(?:com)|(?:co\.in)).*#q=.+)

httpthe literal text http (case insensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case insensitive)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

wwwthe literal text www (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

googlethe literal text google (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:(?:com)|(?:co\.in))

1st Alternative(?:com)

Non-Capturing Group(?:com)

comthe literal text com (case insensitive)

2nd Alternative(?:co\.in)

Non-Capturing Group(?:co\.in)

cothe literal text co (case insensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

inthe literal text in (case insensitive)

.*any character (except for line terminators), repeated any number of times

#q=the literal text #q= (case insensitive)

.+any character (except for line terminators), repeated at least once

Global pattern flags

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

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.

Search reference

Regular Expression

(https?:\/\/www\.google\.(?:(?:com)|(?:co\.in)).*#q=.+)

https://www.google.co.in/?gws_rd=cr&ei=2LjgUqvJNYe6yAPZ9YHoAQ#q=sss&safe=active

https://www.google.co.in/?gws_rd=cr&ei=2LjgUqvJNYe6yAPZ9YHoAQ