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
Processing...

Test String

Substitution
Processing...

Code Generator

Language

Generated Code

#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox Local $sRegex = "<outcomeDeclaration(.*?)\/>" Local $sString = "<assessmentItem xmlns="http://www.imsglobal.org/xsd/imsqti_v2p1" xmlns:m="http://www.w3.org/1998/Math/MathML" xmlns:xi="http://www.w3.org/2001/XInclude" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.imsglobal.org/xsd/imsqti_v2p1 http://www.imsglobal.org/xsd/qti/qtiv2p1/imsqti_v2p1.xsd" identifier="IT0000300" title="IT0000300" label="Item Label" adaptive="false" timeDependent="false" toolName="TAO" toolVersion="3.1.0-sprint23">" & @CRLF & _ " <responseDeclaration identifier="_64B7CBD9-8ED4-EC27-D190-BD0751A38A95" cardinality="single" baseType="string"/>" & @CRLF & _ "" & @CRLF & _ " <outcomeDeclaration identifier="SCORE" cardinality="single" baseType="float">" & @CRLF & _ " <defaultValue>" & @CRLF & _ " <value>0</value>" & @CRLF & _ " </defaultValue>" & @CRLF & _ " </outcomeDeclaration>" & @CRLF & _ "" & @CRLF & _ " <outcomeDeclaration identifier="SCORE" cardinality="single" baseType="float"/>" & @CRLF & _ "" & @CRLF & _ " <stylesheet href="style/custom/tao-user-styles.css" type="text/css" media="all" title=""/>" & @CRLF & _ " <itemBody>" & @CRLF & _ " <div class="grid-row">" & @CRLF & _ " <div class="col-12"><prompt>" & @CRLF & _ " <p>300</p>" & @CRLF & _ " </prompt>" & @CRLF & _ " <extendedTextInteraction responseIdentifier="_64B7CBD9-8ED4-EC27-D190-BD0751A38A95" base="10" minStrings="0" format="plain" class="">" & @CRLF & _ " " & @CRLF & _ " </extendedTextInteraction>" & @CRLF & _ " </div>" & @CRLF & _ " </div>" & @CRLF & _ " </itemBody>" Local $sSubst = "<outcomeDeclaration$1>\n\t<defaultValue>\n\t\t<value>0</value>\n\t</defaultValue>\n</outcomeDeclaration>" Local $sResult = StringRegExpReplace($sString, $sRegex, $sSubst) MsgBox($MB_SYSTEMMODAL, "Result", $sResult)

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