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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]
  • Character class intersection
    [\w&&[^\d]]
  • 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

Code Generator

Generated Code

const regex = /\[([A-G][#b]?(maj|m)?[27]?(add|aug|dim|sus)?[2-9]?)\]/g; // Alternative syntax using RegExp constructor // const regex = new RegExp('\\[([A-G][#b]?(maj|m)?[27]?(add|aug|dim|sus)?[2-9]?)\\]', 'g') const str = `[Am7], [C6] [C7] [Cmaj7] [C] [Fadd9] [C7sus4] [Csus4], [Fsus2] [A7] [Edim] [A9], [Em6] [Dbdim] [Eb9] [Gdim] [A7sus4] [C9], [Gm6] [Em7], [G6] [Bb6], [Gm7] [G7] [G7sus4] [Gmaj7] [Dsus4], [Gsus2] [Gm] [G] [Csus2], [Gsus4] [Ebadd9] [Eb] [Ebaug], [Gaug] [Cm] [Em9] [Cadd9] [Abaug], [Caug], [Eaug] [Fm] [Amaj7] [Dbm6], [Gb9] [Dbm7] [Bbm7], [Db6] [Db7] [Db] [Gbadd9] [Gbsus2] [E7] [Bb7] [Abdim], [Fdim] [Fm6] [Gbm9] [Bm6], [E9] [Emaj7] [Dbm9] [Bb7sus4] [Db9] [Ab6], [Fm7] [Dbadd9] [Abm7], [B6] [Ab7] [Ab7sus4] [Abmaj7] [Absus2] [Absus4] [E] [Eadd9] [Am] [Am9] [F] [Am6] [A] [Aadd9], [Bm9] [Dbaug], [Faug] [Aaug] [A6], [Gbm] [Gbm6] [Asus4], [Dsus2] [Dm] [Dm6], [G9] [Dm7], [F6] [D] [Bm7], [D6] [D7] [Dmaj7] [Gm9] [D7sus4] [F7] [Ebdim] [B7] [Adim], [Gbdim] [Cm6], [F9] [Fmaj7] [B7sus4] [D9] [Gbm7] [Bbsus2], [Fsus4] [Bbdim] [Bbm] [Bbm9] [Gb] [Bbm6] [Bbmaj7] [Bb] [Bbadd9] [Bbaug], [Daug], [Gbaug] [Bb9] [Bbsus4] [Ebm] [Ab9], [Ebm6] [Ebm7], [Gb6] [Cm7], [Eb6] [Eb7] [Abadd9] [Ebsus2] [Gb7] [Bsus2], [Gbsus4] [Bdim] [Bm] [Bmaj7] [B] [Badd9] [Baug] [Abm] [Bsus4], [Esus2] [E6]`; // 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