Regular Expressions 101

testthe literal text test (case sensitive)

Character Class[\s\S]*?

*?matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

XX12QWthe literal text XX12QW (case sensitive)

Character Class[\s\S]*?

*?matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

Positive Lookahead(?=test)

testthe literal text test (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.

Search reference

Regular Expression

test[\s\S]*?XX12QW[\s\S]*?(?=test)

New

test 
abc def 
test 123 
test pqr 
XX12QW
jkl XX12QW hjas 
12asd23 test bxs