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 = /(?:demande|incident).*(?'num_externe'INC[0-9]*).*(?:\n.*)*Nom\s*:\s*(?'ins_libl'.*\)).*(?:\n.*)*Ville\s*:\s*(?'apt_localisation'.*?)\s*(?:\n.*)*-\s*Demandeur\s*:\s*(?'apt_nom'.*?,.*?),(?'apt_telephone'.*?),.*(?:\n.*)*Cat.gorie\s*:\s*(?'tsy_lib'.*?)\s*(?:\n.*)*\s*-.*Description.*?:\s*(?:\n.*)*\s*o\s*(?'commentaire_externe'.*?)\s*\n/gm; // Alternative syntax using RegExp constructor // const regex = new RegExp('(?:demande|incident).*(?\'num_externe\'INC[0-9]*).*(?:\\n.*)*Nom\\s*:\\s*(?\'ins_libl\'.*\\)).*(?:\\n.*)*Ville\\s*:\\s*(?\'apt_localisation\'.*?)\\s*(?:\\n.*)*-\\s*Demandeur\\s*:\\s*(?\'apt_nom\'.*?,.*?),(?\'apt_telephone\'.*?),.*(?:\\n.*)*Cat.gorie\\s*:\\s*(?\'tsy_lib\'.*?)\\s*(?:\\n.*)*\\s*-.*Description.*?:\\s*(?:\\n.*)*\\s*o\\s*(?\'commentaire_externe\'.*?)\\s*\\n', 'gm') const str = `<![CDATA[ Bonjour, La facture proforma de la demande n°INC0937639 a été mise à jour Pour accéder à ce dossier de nature &quot; demande &quot;, cliquer ici . Détail des informations : - Date de création : 21/03/2019 15:51:54 - Site concerné : o Nom : RRAA COURS LA VILLE (00363800) o Etage : o Bureau : o Adresse 1 : 55 RUE GEORGES CLEMENCEAU o Adresse 2 : o Ville : COURS LA VILLE o CP : 69470 o Téléphone : 0474647881 o Fax : 0474647888 - Horaires du site : o Statut : Ouvert LP : BERNARD,franck Lu=Fermé Fermé Ma=08H30-12H00 13H30-17H45 Me=08H30-12H00 13H30-17H45 Je=08H30-12H00 14H15-17H45 Ve=08H30-12H00 13H30-17H45 Sa=08H30-12H00 Fermé Di=Fermé Fermé - Demandeur : FILLON,LOREN,0474647881, - Logisticien : o Monsieur BERNARD, franck - Equipe d'affectation :LP - Intervenant : BERNARD franck - Catégorie : MULTITECHNIQUE\\Petits travaux\\Menuiserie - Description du dossier : o Pose d'une plaque pour boucher l'ouverture sur la boite aux lettres bureau RA Pour accéder à ce dossier, cliquer ici . ]]> `; // 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