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

/
/
g

Test String

Code Generator

Language

Generated Code

const regex = /(?<=\/)[^\/]*(?=\.)/g; // Alternative syntax using RegExp constructor // const regex = new RegExp('(?<=\\\/)[^\\\/]*(?=\\.)', 'g') const str = `src/profile/Admin.profile src/profile/Chatter External User.profile src/profile/Chatter Free User.profile src/profile/Chatter Moderator User.profile src/profile/Company Communities User.profile src/profile/ContractManager.profile src/profile/Guest License User.profile src/profile/High Volume Customer Portal User.profile src/profile/Integratie.profile src/profile/MarketingProfile.profile src/profile/OWS.profile src/profile/Photos Profile.profile src/profile/PostNL - Audit.profile src/profile/PostNL - Business gebruiker.profile src/profile/PostNL - Controlroom C%26S Aanmaker - CC.profile src/profile/PostNL - Controlroom C%26S Analist - CC.profile src/profile/PostNL - Controlroom C%26S Behandelaar - CC.profile src/profile/PostNL - DUB - CC.profile src/profile/PostNL - Directeur V%26B - CC.profile src/profile/PostNL - IT Servicedesk - CC.profile src/profile/PostNL - K%26K behandelaar.profile src/profile/PostNL - Klachten Behandelaar - CC.profile src/profile/PostNL - Klachten Inzage - CC.profile src/profile/PostNL - Netwerk Behandelaar.profile src/profile/PostNL - OBSB - CC.profile src/profile/PostNL - OBSB Beheerder - CC.profile src/profile/PostNL - OR Administrator - CC.profile src/profile/PostNL - Postbezorger Community - CC.profile src/profile/PostNL - Postbezorger Community Chatter - CC.profile src/profile/PostNL - Postbezorger Community Chauffeur - CC.profile src/profile/PostNL - Postbezorger Community Extern - CC.profile src/profile/PostNL - Postbezorger Community PB ZW - CC.profile src/profile/PostNL - Postbezorger Community Voorbereiden - CC.profile src/profile/PostNL - Procesmanager Bezorgen - CC.profile src/profile/PostNL - Procesmanager Voorbereiden - CC.profile src/profile/PostNL - Regiomanagers - CC.profile src/profile/PostNL - Service Centrum Medewerker.profile src/profile/PostNL - Teamleider - CC.profile src/profile/PostNL - Teamleider Voorbereiden - CC.profile src/profile/PostNL - Werkorder behandelaar - CC.profile src/profile/ReadOnly.profile src/profile/SolutionManager.profile src/profile/Standard.profile`; // Reset `lastIndex` if this regex is defined globally // regex.lastIndex = 0; let m; while ((m = regex.exec(str)) !== null) { // This is necessary to avoid infinite loops with zero-width matches if (m.index === regex.lastIndex) { regex.lastIndex++; } // The result can be accessed through the `m`-variable. m.forEach((match, groupIndex) => { console.log(`Found match, group ${groupIndex}: ${match}`); }); }

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 JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions