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Regular Expression
/
/
gm
Test String
Search reference
All Tokens
Common Tokens
General Tokens
Anchors
Meta Sequences
Quantifiers
Group Constructs
Character Classes
Flags/Modifiers
Substitution
A single character of: a, b or c
[abc]
A character except: a, b or c
[^abc]
A character in the range: a-z
[a-z]
A character not in the range: a-z
[^a-z]
A character in the range: a-z or A-Z
[a-zA-Z]
Any single character
.
Alternate - match either a or b
a|b
Any whitespace character
\s
Any non-whitespace character
\S
Any digit
\d
Any non-digit
\D
Any word character
\w
Any non-word character
\W
Non-capturing group
(?:...)
Capturing group
(...)
Zero or one of a
a?
Zero or more of a
a*
One or more of a
a+
Exactly 3 of a
a{3}
3 or more of a
a{3,}
Between 3 and 6 of a
a{3,6}
Start of string
^
End of string
$
A word boundary
\b
Non-word boundary
\B