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

/
/

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 = "(\<meta([\s]*(name="viewport"){1})[\w\d\s\.\-,=]*(content="){1}[\w\d\s\.\-,=]*(viewport-fit=cover){1}[\w\d\s\.\-,="]+\/\>)" Local $sString = "<!DOCTYPE html>" & @CRLF & _ "<html lang="en">" & @CRLF & _ " <head>" & @CRLF & _ " <meta charset="utf-8" />" & @CRLF & _ " <title>Ionic App</title>" & @CRLF & _ "" & @CRLF & _ " <base href="/" />" & @CRLF & _ "" & @CRLF & _ " <!-- viewport-fit on multiline meta -->" & @CRLF & _ " <meta name="viewport"" & @CRLF & _ " content="viewport-fit=cover, width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"" & @CRLF & _ " />" & @CRLF & _ " <meta" & @CRLF & _ " name="viewport" content="viewport-fit=cover, width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"" & @CRLF & _ " />" & @CRLF & _ " <meta" & @CRLF & _ " name="viewport"" & @CRLF & _ " content="viewport-fit=cover, width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"" & @CRLF & _ " />" & @CRLF & _ "" & @CRLF & _ " <!-- viewport-fit on singleline content at the start -->" & @CRLF & _ " <meta name="viewport" content="viewport-fit=cover, width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no" />" & @CRLF & _ "" & @CRLF & _ " <!-- viewport-fit on singleline content at the end -->" & @CRLF & _ " <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no, viewport-fit=cover" />" & @CRLF & _ "" & @CRLF & _ " <meta name="format-detection" content="telephone=no" />" & @CRLF & _ " <meta name="msapplication-tap-highlight" content="no" />" & @CRLF & _ "" & @CRLF & _ " <link rel="icon" href="assets/icon/favicon.ico" />" & @CRLF & _ "" & @CRLF & _ " <!-- add to homescreen for ios -->" & @CRLF & _ " <meta name="apple-mobile-web-app-capable" content="yes" />" & @CRLF & _ " <meta name="apple-mobile-web-app-status-bar-style" content="black" />" & @CRLF & _ " </head>" & @CRLF & _ " <body>" & @CRLF & _ " <app-root></app-root>" & @CRLF & _ " </body>" & @CRLF & _ "</html>" & @CRLF & _ "" Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYFULLMATCH) ; Present the entire match result _ArrayDisplay($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