Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • 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

/
/
xg

Test String

Code Generator

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?x)(?(DEFINE)" & @CRLF & _ " (?<number> (?>-? (?= [1-9]|0(?!\d) ) \d+ (\.\d+)? ([eE] [+-]? \d+)?) )" & @CRLF & _ " (?<boolean> (?> true | false | null ))" & @CRLF & _ " (?<unquoted> (?> ([^"\\]* | \\ ["\\bfnrt\/] | \\ u [0-9a-f]{4} )* ))" & @CRLF & _ " (?<string> (?>" (?&unquoted) " ))" & @CRLF & _ " (?<array> (?> \[ (?: (?&json) (?: , (?&json) )* )? \s* \] ))" & @CRLF & _ " (?<pair> (?> \s* (?&string) \s* : (?&json) ))" & @CRLF & _ " (?<object> (?>\{ (?: (?&pair) (?: , (?&pair) )* )? \s* \} ))" & @CRLF & _ " (?<json> (?>\s* (?: (?&number) | (?&boolean) | (?&string) | (?&array) | (?&object) ) \s* ))" & @CRLF & _ " )" & @CRLF & _ "(?<=") # Lookbehind for quote before parent key string" & @CRLF & _ "(?&unquoted) # parent key string " & @CRLF & _ "(?= # Lookahead for object properties including unique property marker" & @CRLF & _ ""\s*:\s*{\s*" & @CRLF & _ "(?: (?&pair) (?: , (?&pair) )* )? # any number of property key value pairs, optional." & @CRLF & _ "(?:(?:\s* , )?\s* "type"\s*:\s*"title") # unique property marker, optionally perfixed with comma." & @CRLF & _ "(?: \s*, (?&pair) )* # any number of property key value pairs, optional." & @CRLF & _ "\s*}" & @CRLF & _ ")" Local $sString = " .." & @CRLF & _ " "id": "Xkt@"," & @CRLF & _ " "name": "My Email"," & @CRLF & _ " "type": "email"" & @CRLF & _ " }," & @CRLF & _ " "Item of Equipment": {" & @CRLF & _ " "id": "title"," & @CRLF & _ " "title": {}," & @CRLF & _ " "name": "Item of Equipment"," & @CRLF & _ " "type": "title"" & @CRLF & _ " }," & @CRLF & _ " "My Date": {" & @CRLF & _ " "id": "nYcK"," & @CRLF & _ " "name": "My Date"," & @CRLF & _ " "type": "date"," & @CRLF & _ " .." & @CRLF & _ "" & @CRLF & _ "" & @CRLF & _ ""Item of Equipment": {" & @CRLF & _ " "type": "title"," & @CRLF & _ " "id": "title"," & @CRLF & _ " "title": {}," & @CRLF & _ " "name": "Item of Equipment"" & @CRLF & _ " " & @CRLF & _ " }," Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH) Local $aFullArray[0] For $i = 0 To UBound($aArray) -1 _ArrayConcatenate($aFullArray, $aArray[$i]) Next $aArray = $aFullArray ; Present the entire match result _ArrayDisplay($aArray, "Result")

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm