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

/
/
gm

Test String

Code Generator

Language

Generated Code

const regex = /:([0-9]{2}[A-Z])(?:::|:)((.*)\/\/(.*)(?:\/)(.*)?|(.*)\/\/(.*)|((ISIN) ([A-Z]{2}[0-9]{10}))?((?:[\s\S](?!:[0-9]{2}[A-Z]:))*))/gm; // Alternative syntax using RegExp constructor // const regex = new RegExp(':([0-9]{2}[A-Z])(?:::|:)((.*)\\\/\\\/(.*)(?:\\\/)(.*)?|(.*)\\\/\\\/(.*)|((ISIN) ([A-Z]{2}[0-9]{10}))?((?:[\\s\\S](?!:[0-9]{2}[A-Z]:))*))', 'gm') const str = `{1:F01FNZWGB2SB0100803124654}{2:O5350219180911CRESCHZZE80A61337108691809110119N}{3:{108:12195636003}}{4: :16R:GENL :28E:00001/ONLY :20C::SEME//MONY31109D098518 :23G:NEWM :98A::PREP//20180911 :98A::STAT//20180910 :22F::SFRE//DAIL :22F::CODE//COMP :22F::STTY//CUST :22F::STBA//SETT :97A::SAFE//0835-2393193-05-000 :17B::ACTI//Y :17B::CONS//N :16S:GENL :16R:SUBSAFE :16R:FIN :35B:ISIN CH0016431741 ANTEILE -I DY- PICTET CH - CHF BONDS TRACKER :16R:FIA :22F::FORM//BEAR :11A::DENO//CHF :16S:FIA :90B::MRKT//ACTU/CHF1056,8 :93B::AGGR//UNIT/0,184 :93B::AVAI//UNIT/0,184 :16R:SUBBAL :93B::AGGR//UNIT/0,184 :94F::SAFE//CUST/MGTCBEBEFND :16S:SUBBAL :19A::HOLD//CHF194,45 :16S:FIN :16R:FIN :35B:ISIN CH0117044708 ANTEILE -DT USD- SWISSCANTO (CH) INDEX FUND V - SWISSCANTO (CH) INDEX EQUITY FUND USA :16R:FIA :22F::FORM//BEAR :11A::DENO//USD :16S:FIA :90B::MRKT//ACTU/USD238,6195 :93B::AGGR//UNIT/1,044 :93B::AVAI//UNIT/1,044 :16R:SUBBAL :93B::AGGR//UNIT/1,044 :94F::SAFE//NCSD/INSECHZZXXX :16S:SUBBAL :19A::HOLD//CHF242,31 :92B::EXCH//USD/CHF/0,97265 :16S:FIN :16R:FIN :35B:ISIN CH0185709083 ANTEILE -QA- CREDIT SUISSE INDEX FUND (CH) UMBRELLA - CSIF (CH) EQUITY EMERGING MARKETS BLUE :16R:FIA :22F::FORM//BEAR :11A::DENO//CHF :16S:FIA :90B::MRKT//ACTU/CHF1169,79 :93B::AGGR//UNIT/0,201 :93B::AVAI//UNIT/0,201 :16R:SUBBAL :93B::AGGR//UNIT/0,201 :94B::SAFE//SHHE/9904 :16S:SUBBAL :19A::HOLD//CHF235,13 :16S:FIN :16R:FIN :35B:ISIN CH0190222403 ANTEILE -QA- CREDIT SUISSE INDEX FUND (CH) I UMBRELLA - CSIF (CH) I EQUITY EUROPE EX CH :16R:FIA :22F::FORM//BEAR :11A::DENO//CHF :16S:FIA :90B::MRKT//ACTU/EUR1129,18 :93B::AGGR//UNIT/0,178 :93B::AVAI//UNIT/0,178 :16R:SUBBAL :93B::AGGR//UNIT/0,178 :94F::SAFE//NCSD/INSECHZZXXX :16S:SUBBAL :19A::HOLD//CHF226,85 :92B::EXCH//EUR/CHF/1,128663095 :16S:FIN :16R:FIN :35B:ISIN CH0190227683 ANTEILE -QA- CREDIT SUISSE INDEX FUND (CH) UMBRELLA - CSIF (CH) EQUITY JAPAN :16R:FIA :22F::FORM//BEAR :11A::DENO//JPY :16S:FIA :90B::MRKT//ACTU/JPY231558, :93B::AGGR//UNIT/0,117 :93B::AVAI//UNIT/0,117 :16R:SUBBAL :93B::AGGR//UNIT/0,117 :94F::SAFE//NCSD/INSECHZZXXX :16S:SUBBAL :19A::HOLD//CHF237,15 :92B::EXCH//JPY/CHF/0,0087535442107 :16S:FIN :16R:FIN :35B:ISIN CH0220919085 ANTEILE -FBH CHF- CREDIT SUISSE INDEX FUND (CH) II UMBRELLA - CSIF (CH) II GOLD BLUE :16R:FIA :22F::FORM//BEAR :11A::DENO//CHF :16S:FIA :90B::MRKT//ACTU/CHF870,46 :93B::AGGR//UNIT/0,047 :93B::AVAI//UNIT/0,047 :16R:SUBBAL :93B::AGGR//UNIT/0,047 :94F::SAFE//NCSD/INSECHZZXXX :16S:SUBBAL :19A::HOLD//CHF40,91 :16S:FIN :16R:FIN :35B:ISIN CH0259132303 ANTEILE -QAH- CREDIT SUISSE INDEX FUND (CH) UMBRELLA - CSIF (CH) BOND GOVERNMENT EMERGING MARKETS USD BLUE :16R:FIA :22F::FORM//BEAR :11A::DENO//CHF :16S:FIA :90B::MRKT//ACTU/CHF871,8 :93B::AGGR//UNIT/0,208 :93B::AVAI//UNIT/0,208 :16R:SUBBAL :93B::AGGR//UNIT/0,208 :94F::SAFE//NCSD/INSECHZZXXX :16S:SUBBAL :19A::HOLD//CHF181,33 :16S:FIN :16R:FIN :35B:ISIN CH0304170571 ANTEILE -QAH- CREDIT SUISSE INDEX FUND (CH) UMBRELLA - CSIF (CH) BOND GOVERNMENT USD BLUE :16R:FIA :22F::FORM//BEAR :11A::DENO//CHF :16S:FIA :90B::MRKT//ACTU/CHF910,27 :93B::AGGR//UNIT/0,2 :93B::AVAI//UNIT/0,2 :16R:SUBBAL :93B::AGGR//UNIT/0,2 :94F::SAFE//NCSD/INSECHZZXXX :16S:SUBBAL :19A::HOLD//CHF182,05 :16S:FIN :16R:FIN :35B:ISIN CH0316599023 ANTEILE -QAH- CREDIT SUISSE INDEX FUND (CH) UMBRELLA - CSIF (CH) BOND CORPORATE EUR :16R:FIA :22F::FORM//BEAR :11A::DENO//CHF :16S:FIA :90B::MRKT//ACTU/CHF993,13 :93B::AGGR//UNIT/0,196 :93B::AVAI//UNIT/0,196 :16R:SUBBAL :93B::AGGR//UNIT/0,196 :94F::SAFE//NCSD/INSECHZZXXX :16S:SUBBAL :19A::HOLD//CHF194,65 :16S:FIN :16R:FIN :35B:ISIN CH0342181622 ANTEILE -D CHF- BLACKROCK INVESTMENT FUNDS SWITZERLAND - ISHARES SPI (R) EQUITY INDEX FUND (CH) :16R:FIA :22F::FORM//BEAR :11A::DENO//CHF :16S:FIA :90B::MRKT//ACTU/CHF1089,63 :93B::AGGR//UNIT/0,217 :93B::AVAI//UNIT/0,217 :16R:SUBBAL :93B::AGGR//UNIT/0,217 :94F::SAFE//NCSD/INSECHZZXXX :16S:SUBBAL :19A::HOLD//CHF236,45 :16S:FIN :16S:SUBSAFE :16R:ADDINFO :19A::HOLP//CHF1971,28 :19A::HOLS//CHF1971,28 :16S:ADDINFO -}{5:{MAC:00000000}{CHK:DFB75BA65E32}}{S:{SAC:}{COP:P}{SIG:<SignatureList><SwSec:Signature><SwSec:SignedInfo><Sw:Reference><Sw:DigestValue>xlO1QD8wtqFYh2Dv3XOMVXW+LFK/G4wNNP+lkEbVAec=</Sw:DigestValue></Sw:Reference></SwSec:SignedInfo><SwSec:SignatureValue>PEMF@Proc-Type: 4,MIC-ONLY Content-Domain: RFC822 EntrustFile-Version: 2.0 Originator-DN: cn=finprod-uh,o=creschzz,o=swift Orig-SN: 1500888122 MIC-Info: SHA256, RSA, tqIGXV4JZtOE8FfTXmrBnxtWLRCRygaup2b2Rc+Ac9XjvrjJ+k24RFvuo5YrW3ek +iaYiRPiW46eRRuQO2bdC9lqvDwpluuVRXLBhNkXPmqoKG3ceQM/C2pDlwrunSDu RNBU3kdCBp9HBiWh/qikrCYQ/axjIUowJA+4yJV+fb8ihvkpRPlEHod85CmYyGYm jKsngF66rYeR9yFu5MN20YkxmLR0NnswZjZ/EyjALjdpPNEt+h55O5RKqv7go2VF w9PQws0vz5gMwZs7S//QF322QsQsXG7+rqYqd97+mkbmxGWDsU/EHneDjFsqnSgO 5CR844lPC8tZInZhflckBA== </SwSec:SignatureValue><SwSec:KeyInfo><SwSec:SignDN>cn=finprod-uh,o=creschzz,o=swift</SwSec:SignDN><SwSec:CertPolicyId>1.3.21.6.2</SwSec:CertPolicyId></SwSec:KeyInfo><SwSec:Manifest><Sw:Reference><Sw:DigestRef>M</Sw:DigestRef><Sw:DigestValue>MlL+Hb1Y9ZeQqxZOnv/u8bwiQNn5hj/ItM6F7gUKDBE=</Sw:DigestValue></Sw:Reference><Sw:Reference><Sw:DigestRef>Sw.E2S</Sw:DigestRef><Sw:DigestValue>eWlk1Jvu93rzuPg9VHCu9Ro9daY42/eFqlQwjcUd8t4=</Sw:DigestValue></Sw:Reference></SwSec:Manifest></SwSec:Signature></SignatureList>}}`; // 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