regex101: build, test, and debug regex (original) (raw)

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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

Regular Expression

No Match

/

/

gm

Test String