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 = /<NUM_INS>(?'ins_numins'.*)<\x2FNUM_INS>.*<NUM_EQUIPEMENT>(?'num_equipement'.*)<\x2FNUM_EQUIPEMENT>.*<APT_CIVILITE>(?'apt_civilite'.*)<\x2FAPT_CIVILITE>.*<APT_NOM>(?'apt_nom'.*)<\x2FAPT_NOM>.*<APT_TELEPHONE>(?'apt_telephone'.*)<\x2FAPT_TELEPHONE>.*<APT_E_MAIL>(?'apt_e_mail'.*)<\x2FAPT_E_MAIL>.*<APT_LOCALISATION>(?'apt_localisation'.*)<\x2FAPT_LOCALISATION>.*<TSY_CD>(?'tsy_lib'.*)<\x2FTSY_CD>.*<QSY_CD>(?'qsy_lib'.*)<\x2FQSY_CD>.*<COMMENTAIRE_EXTERNE>(?'commentaire_externe'.*)<\x2FCOMMENTAIRE_EXTERNE>/gm; // Alternative syntax using RegExp constructor // const regex = new RegExp('<NUM_INS>(?\'ins_numins\'.*)<\\x2FNUM_INS>.*<NUM_EQUIPEMENT>(?\'num_equipement\'.*)<\\x2FNUM_EQUIPEMENT>.*<APT_CIVILITE>(?\'apt_civilite\'.*)<\\x2FAPT_CIVILITE>.*<APT_NOM>(?\'apt_nom\'.*)<\\x2FAPT_NOM>.*<APT_TELEPHONE>(?\'apt_telephone\'.*)<\\x2FAPT_TELEPHONE>.*<APT_E_MAIL>(?\'apt_e_mail\'.*)<\\x2FAPT_E_MAIL>.*<APT_LOCALISATION>(?\'apt_localisation\'.*)<\\x2FAPT_LOCALISATION>.*<TSY_CD>(?\'tsy_lib\'.*)<\\x2FTSY_CD>.*<QSY_CD>(?\'qsy_lib\'.*)<\\x2FQSY_CD>.*<COMMENTAIRE_EXTERNE>(?\'commentaire_externe\'.*)<\\x2FCOMMENTAIRE_EXTERNE>', 'gm') const str = `<NUM_EXTERNE></NUM_EXTERNE> <NUM_INS>5092427002</NUM_INS> <NUM_EQUIPEMENT></NUM_EQUIPEMENT> <APT_CIVILITE>1</APT_CIVILITE> <APT_NOM>PC INCENDIE SEQUANA HQPAR -</APT_NOM> <APT_TELEPHONE>+33145381818</APT_TELEPHONE> <APT_E_MAIL>PCINCENDIE.SEQUANA@accor.com</APT_E_MAIL> <APT_LOCALISATION>SS1 local TGS2</APT_LOCALISATION> <APT_CR_MAIL>O</APT_CR_MAIL> <TSY_CD>3764</TSY_CD> <QSY_CD>5</QSY_CD> <COMMENTAIRE_EXTERNE>Alarme CPI : TGS2 Code alarme Q4.</COMMENTAIRE_EXTERNE> `; // 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