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 single character of: a, b, c or d
    [[ab][cd]]
  • 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
No Match

r"
"
gms

Test String

Code Generator

Language

Generated Code

const regex = new RegExp('^---$((.)*)^---$', 'gms') const str = `--- Created: 20.07.2023 Tags: #kleiderschrank, #golf --- # Kleiderschrank | Golf ## Polos kurz schwarz (#polo) 2018-11 | 2 x Under Armour Herren Performance Poloshirt, Schwarz, XL 0000-00 | Nike Polos Standard FIT XL black 0000-00 | AIRBUS Bremen XL black 2018-05 | Golfino Poloshirt kurz grün 2018-05 | Golfino Poloshirt kurz türkis 2016-07 | 4 x Decathlon Polos 0000-00 | Adidas Polo XL hellgrau 0000-00 | Adidas Polo L signalrot 0000-00 | Adidas Polo L signalrot ## Polos lang 2019-04 | Golfino Poloshirt lang ## Pullover (#pullover) 0000-00 | Decathlon Fleece XL hellgrau 0000-00 | Decathlon Fleece XL blau ## Windshields (#windshields) 2019-04 | Nike Herren-Golfjacke mit Synthetikfüllung XL Schwarz 2019-04 | Golfino Thermo Jacke gesteppt schwarz 56 2017-06 | Golfino Windshield Fleece Jacke black 0000-00 | Golfino Shell dunkelbau 2017-06 | Golfino ThermoShirt 1/2 Zip blau 54 0000-00 | Golfino Jacke schwarz ## Rain Shirts (#rainshirts) 0000-00 | FootJoy Hydrolite Rainshirt XL black 2015-09 | Under Armour Herren Golf Pullover Crestable Elements 1/2 Zip, Black, XL ## Westen (#westen) 2018-05 | Golfino Mikrofaser Weste Navy 2019-04 | Golfino Weste gesteppt schwarz 56 ## Zipper lang (#zipper) 2018-05 | Golfino Troyer Zip schwarz lang 2018-05 | Golfino Troyer Zip blau lang 2018-05 | Golfino Troyer Zip grün lang 2018-05 | Golfino Troyer Zip rot lang 2018-05 | Golfino Troyer Zip rot lang ## Hosen (#hosen) 0000-00 | Golfino 54 schwarz 0000-00 | Alberto chino 54 schwarz 0000-00 | Adidas blau 32/34 ## Schuhe 2018-08 | FootJoy Golfschuhe Contour Casual 45 braun 2018-08 | FootJoy Golfschuhe Contour Fit 45 schwarz 2015-09 | Nike `; // 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