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

/
/
gmu

Test String

Code Generator

Language

Generated Code

const regex = /(?i)Rozliczenie[\s\a]*VAT[\s\a]*Netto[\s\a]*Podatek[\s\a]*Brutto[\s\a]*[-]*wg[\s\a]*stawki[\s\a]*(?<StVAT>\d{1,2}.0%)[\s\a]*[\s\S]*Razem[\s]*:[\s]*(?<WartoscNetto>(\d{1,3}\.\d{1,3},\d{2}|\d{1,3},\d{2}))\s*(?<KwotaVAT>(\d{1,3}\.\d{1,3},\d{2}|\d{1,3},\d{2}))\s*(?<WartoscBrutto>(\d{1,3}\.\d{1,3},\d{2}|\d{1,3},\d{2}))[\s\a]*Do\s*Zapłaty\s*:\s*(?<DoZaplaty>\k<WartoscBrutto>)/gmu; // Alternative syntax using RegExp constructor // const regex = new RegExp('(?i)Rozliczenie[\\s\\a]*VAT[\\s\\a]*Netto[\\s\\a]*Podatek[\\s\\a]*Brutto[\\s\\a]*[-]*wg[\\s\\a]*stawki[\\s\\a]*(?<StVAT>\\d{1,2}.0%)[\\s\\a]*[\\s\\S]*Razem[\\s]*:[\\s]*(?<WartoscNetto>(\\d{1,3}\\.\\d{1,3},\\d{2}|\\d{1,3},\\d{2}))\\s*(?<KwotaVAT>(\\d{1,3}\\.\\d{1,3},\\d{2}|\\d{1,3},\\d{2}))\\s*(?<WartoscBrutto>(\\d{1,3}\\.\\d{1,3},\\d{2}|\\d{1,3},\\d{2}))[\\s\\a]*Do\\s*Zapłaty\\s*:\\s*(?<DoZaplaty>\\k<WartoscBrutto>)', 'gmu') const str = `AKTURA FV000821 :JAAC*fibf: DATA WYSTAWIENIA : 2020.06.08 ZLECENIE: 01 MIEJSCE WYSTAWIENIA : TORUŃ DATA DOSTAWY TOWARU : 2020.06.08 UWAGI : zam. T561552 Z1 SPRZEDAWCA: "MEGA-TOOLS" S.C. Marek Śpiewak,Mirosław Śpiewak ul.Osikowa 34 87-100 Toruń NIP 9562093313 ING Bank Śląski S.A. O/Toruń 49 1050 1979 1000 0022 7285 0849 NABYWCA: Pojazdy Szynowe PESA Bydgoszcz Spółka Akcyjna ul.Zygmunta Augusta 11 85-082 Bydgoszcz NIP 554-031-17-75 [07-668] Lp Opis towaru/uslugi Ilość jm. Cena Wartosc VAT ----------------------------------------------------------------------------------------------- 1 INNE-ELEK-9512 11. szt. 66,00 726,00 23.0% Lampa warsztatowa 30LED z ładowarką ---------------------------------------------------------------------------------------------- 726,00 Rozliczenie VAT Netto Podatek Brutto ----------------------------------------------------wg stawki 23.0% : 726,00 166,98 892,98 ----------------------------------------------------- RAZEM : 726,00 166,98 892,98 DO ZAPŁATY: 892,98 PLN SŁOWNIE : osiemset dziewiecdziesiat dwa zl dziewiecdziesiat osiem gr ZAPLACONO GOTOWKA : 0,00 PLN POZOSTAŁO DO ZAPŁATY : 892,98 PLN PŁATNE : PRZELEW DO 2020.08.07 NA KONTO : 49 1050 1979 1000 0022 7285 0849 Za niezapłacone należności w terminie, będą naliczone odsetki w wysokości ustawowej. Dokument wystawiony i dostarczony nabywcy w formie elektronicznej. Wystawca dokumentu FV000821 : MIROSŁAW ŚPIEWAK `; // 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