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
Processing...

Test String

Code Generator

Language

Generated Code

const regex = /^(?:[^\{]*[\{]){2}\s(?<ReadablePayload>[^\{]*)[\}]\S\s[^\{]*[\{]\s([^\}]*[\}])/gs; // Alternative syntax using RegExp constructor // const regex = new RegExp('^(?:[^\\{]*[\\{]){2}\\s(?<ReadablePayload>[^\\{]*)[\\}]\\S\\s[^\\{]*[\\{]\\s([^\\}]*[\\}])', 'gs') const str = `2019-02-08 00:54:43 [TRACE] Malformed message { [TRACE] Readable Payload { UNH+20038142932000+AIRRQT:15:2:1A+cepSwzsAXFw=800'ORG+1A:MUC+1234567:NCE1A0950+++T'BLK+152+RF++000+0000000000+1A:1290861+001:001'AMD++07:00000000::07FEB++1A:1290861+1A:1290861+MUC:1A: +00:01+++AMSSG34AA:57211534:02+++++++++AMSSG34AA:57211534'AVC+IBERIA+IB:0755'BIN+TRFP'CSC+7906:/++9993WSSU'DAT+180130+190207+190207'HAS+000+000:X:OPO+XXX+MAD+XXX+XX:XXXXX:X:X: : : : +XXXX++0'HAS+000+000:X:MAD+XXX+PMI+XXX+XX:XXXXX:X:X: : : : +XXXX++0'HAS+000+000:X:PMI+XXX+MAD+XXX+XX:XXXXX:X:X: : : : +XXXX++0'HAS+000+000:X:MAD+XXX+OPO+XXX+XX:XXXXX:X:X: : : : +XXXX++0'RFD+L+30JAN18++EUR:88.00:88.00:0.00++XT:48.90:48.90'KFL'KRF+ +Q:EUR:3.47:PT: *Q:EUR:10.09:YP: *Q:EUR:25.92:JD: *Q:EUR:7.69:QV: *Q:EUR:1.73:OG: 'ING'INM+001+01:SANTOS/CARLA MS'TTN+E+075+5169861484'EQN+1'CPN+1*2*3*4'REF+075-5169861484+07FEB19'END+X'UNT+23+1' }, [TRACE] Reason { Mandatory element is missing. [TRACE] Error at <src/CBRSegmentDecoders.cpp:21405 [TRACE] Error in segment CSC 06 1 1A TKA in element #2. [TRACE] ------ [TRACE] Error at <src/CBRMessageDecoders.cpp:121 [TRACE] Error in group Group id: _294728_G_CBR in element #3. [TRACE] ------ [TRACE] Decoding error in message AIRRQT 15 2 1A PNR in element #4 at character 236 of the buffer, using charset B [TRACE] Converted segments: ORG - BLK - AMD - AVC - BIN - [TRACE] Cannot convert CSC from here==>+9993WSSU'Last segment correctly processed: CSC+7906:/++9993WSSU' [TRACE] }, [TRACE] Rejection type { T }, [TRACE] Current line { 251590 }, [TRACE] }`; // 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