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

/
/
umg

Test String

Code Generator

Language

Generated Code

const regex = /^(?<houseNumber>[1-9\p{L}][\d\p{L}]*(?:(?: | ?[\-/+,] ?)[\d\p{L}]+)*?),? (?<street>(?!\d+ )[\p{L}\d'\u2018-\u2019]+\.?(?:[ -][\p{L}\d'\u2018-\u2019]+\.?)*(?<! \d+))$/umg; // Alternative syntax using RegExp constructor // const regex = new RegExp('^(?<houseNumber>[1-9\\p{L}][\\d\\p{L}]*(?:(?: | ?[\\-\/+,] ?)[\\d\\p{L}]+)*?),? (?<street>(?!\\d+ )[\\p{L}\\d\'\\u2018-\\u2019]+\\.?(?:[ -][\\p{L}\\d\'\\u2018-\\u2019]+\\.?)*(?<! \\d+))$', 'umg') const str = `1 Test-Straße 373 Chaussée de Tirlemont 23 Mühlenstraße 135 Straße des 17. Juni 12ab 4th Street 1435 3rd Avenue 11-19 Hamburger Str. 12 K4 12ab Test-Str. 12a-d Test-Str. 51 16 Test Str. 17/18 Test-Str. QA/3/31 Test Str. 51 / XX / 31 Test Str.`; // 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