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

/
/
gm

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 = "(?m)[^^](.*)\n(--+)" Local $sString = "The case of a file name is one thing, but the case of formatting code in" & @CRLF & _ "a source file is a different matter. Almost all languages have an agreed" & @CRLF & _ "upon style of casing, indentation, etc. You should make a real effort to" & @CRLF & _ "discover the strategy for the language you are using, and to follow it" & @CRLF & _ "as best you can. In this document, I attempt to follow the standards for" & @CRLF & _ "formatting JavaScript code. With a few minor exceptions, if you see me" & @CRLF & _ "vary from what you consider to be the best strategy for formatting" & @CRLF & _ "JavaScript, then please send me email and let me know. My goal is to" & @CRLF & _ "conform to the standards set by the JavaScript community. If I want to" & @CRLF & _ "assert my individuality, I wrote prose or poetry; when I write code, I" & @CRLF & _ "try to conform to standards. The only case for individuality in code is" & @CRLF & _ "the case for writing the cleanest, easiest to understand code of any" & @CRLF & _ "developer on your team. There is no place for a quirky style of" & @CRLF & _ "capitalization or indentation." & @CRLF & _ "" & @CRLF & _ "A Simple JavaScript Development Strategy" & @CRLF & _ "----------------------------------------" & @CRLF & _ "" & @CRLF & _ "JavaScript run in the browser has one set of rules when run in a" & @CRLF & _ "browser, and another set when run outside a browser. If you are using" & @CRLF & _ "JavaScript primarily to write client side scripts meant to be run in a" & @CRLF & _ "browser, then it is best to learn JavaScript, and develop JavaScript," & @CRLF & _ "under that scenario. It is true that there are legitimate and important" & @CRLF & _ "ways to run JavaScript from outside the browser. For instance, you can" & @CRLF & _ "run JavaScript from the command prompt, or directly from inside some" & @CRLF & _ "IDEs. At first, however, such stratagems can lead to much confusion. As" & @CRLF & _ "a result, I suggest that you begin by developing JavaScript inside a" & @CRLF & _ "browser." 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