Regular Expressions 101

Pro

Negative Lookahead(?!www.(?:abc|def).test.com)

wwwthe literal text www (case sensitive)

.any character (except for line terminators)

Non-Capturing Group(?:abc|def)

1st Alternativeabc

abcthe literal text abc (case sensitive)

2nd Alternativedef

defthe literal text def (case sensitive)

.any character (except for line terminators)

testthe literal text test (case sensitive)

.any character (except for line terminators)

comthe literal text com (case sensitive)

Positive Lookahead(?=www.*\.test\..*com)

wwwthe literal text www (case sensitive)

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

testthe literal text test (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

comthe literal text com (case sensitive)

^start of line

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

$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

(?!www.(?:abc|def).test.com)(?=www.*\.test\..*com)^.+$

New

www.test.com
www.abc.test.com
www.def.test.com
www.ghi.test.com
www.nottest.com