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
No Match

r"
"
gm

Test String

Code Generator

Language

Generated Code

#include <StringConstants.au3> ; to declare the Constants of StringRegExp #include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate Local $sRegex = "(?m)<li><a href=\"(?:(?!#sequence_only).)*\">(.*)</a>" Local $sString = " <!DOCTYPE html>" & @CRLF & _ "" & @CRLF & _ " <!-- The following setting enables collapsible lists -->" & @CRLF & _ " <p>" & @CRLF & _ " <a href="#human">Human</a></p>" & @CRLF & _ "" & @CRLF & _ " <p class="collapse-section">" & @CRLF & _ " <a class="collapsed collapse-toggle" data-toggle="collapse" " & @CRLF & _ " href=#mammals>Mammals</a>" & @CRLF & _ " <div class="collapse" id="mammals">" & @CRLF & _ " <ul>" & @CRLF & _ " <li><a href="#alpaca">Alpaca</a>" & @CRLF & _ " <li><a href="#armadillo">Armadillo</a>" & @CRLF & _ " <li><a href="#sequence_only">Armadillo</a> (sequence only)" & @CRLF & _ " <li><a href="#baboon">Baboon</a>" & @CRLF & _ " <li><a href="#bison">Bison</a>" & @CRLF & _ " <li><a href="#bonobo">Bonobo</a>" & @CRLF & _ " <li><a href="#brown_kiwi">Brown kiwi</a>" & @CRLF & _ " <li><a href="#bushbaby">Bushbaby</a>" & @CRLF & _ " <li><a href="#sequence_only">Bushbaby</a> (sequence only)" & @CRLF & _ " <li><a href="#cat">Cat</a>" & @CRLF & _ " <li><a href="#chimp">Chimpanzee</a>" & @CRLF & _ " <li><a href="#chinese_hamster">Chinese hamster</a>" & @CRLF & _ " <li><a href="#chinese_pangolin">Chinese pangolin</a>" & @CRLF & _ " <li><a href="#cow">Cow</a>" & @CRLF & _ " <li><a href="#crab-eating_macaque">Crab-eating_macaque</a>" & @CRLF & _ " <div class="gbFooterCopyright">" & @CRLF & _ " &copy; 2017 The Regents of the University of California. All " & @CRLF & _ " Rights Reserved." & @CRLF & _ " <br>" & @CRLF & _ " <a href="https://genome.ucsc.edu/conditions.html">Conditions of " & @CRLF & _ " Use</a>" & @CRLF & _ " </div>" 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