Regular Expressions 101

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  • Unit Tests (4)

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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

/
/
mgi

Test String

Code Generator

Language

Generated Code

const regex = /^(?=(?:\+|0{2})?(?:(?:[\(\-\)\.\/ \t\f]*\d){7,10})?(?:[\-\.\/ \t\f]?\d{2,3})(?:[\-\s]?[ext]{1,3}[\-\.\/ \t\f]?\d{1,4})?$)((?:\+|0{2})\d{0,3})?(?:[\-\.\/ \t\f]?)(\(0\d[ ]?\d{0,4}\)|\(\d{0,4}\)|\d{0,4})(?:[\-\.\/ \t\f]{0,2}\d){3,8}(?:[\-\s]?(?:x|ext)[\-\t\f ]?(\d{1,4}))?$/mgi; // Alternative syntax using RegExp constructor // const regex = new RegExp('^(?=(?:\\+|0{2})?(?:(?:[\\(\\-\\)\\.\\\/ \\t\\f]*\\d){7,10})?(?:[\\-\\.\\\/ \\t\\f]?\\d{2,3})(?:[\\-\\s]?[ext]{1,3}[\\-\\.\\\/ \\t\\f]?\\d{1,4})?$)((?:\\+|0{2})\\d{0,3})?(?:[\\-\\.\\\/ \\t\\f]?)(\\(0\\d[ ]?\\d{0,4}\\)|\\(\\d{0,4}\\)|\\d{0,4})(?:[\\-\\.\\\/ \\t\\f]{0,2}\\d){3,8}(?:[\\-\\s]?(?:x|ext)[\\-\\t\\f ]?(\\d{1,4}))?$', 'mgi') const str = `958698283 958 68 82 83 958-68-82-83 958 698 283 958-698-283 +34958698283 +34 958 69 82 83 +34-958-69-82-83 +34 958 698 283 +34-958-698-283 911 123456789 12345678 1234567890123 001231234567890 0012312345678901 123456789012 1234 0091234567890 +9 123-4567890-x321 +9-123-456-7890 +9 123 4 5 6-7890x1234 009-(123)-456-7890 ext4321 0091234567890x1234 +9-123-456-7890x12345 +9-123-456-7890 ext 1234 00123-(4321)-567.89 ext-4321 0027-123-456-7890 +27-123-456-7890 +9(123)4567890 (01 55) 1234 5678 (01 551) 12345678 +49 (1234) 567890 (0)123456789 +34123456789 +34 (0)123456789 +340123456789 +34 123 456 789 +34 1 23 45 67 89 001230123456789 ext1234 ++34123456789 00-0-----000 01 555012345 001-555012345 +012345678 112 12(34567890 123)456789012345 1-234-567-8901 +1-234-567-8901 x1234 0011-234-567-8901 ext1234 )234( 567 8901 (234) 567 8901 +11 (234) 567-8901 +1.234.567.8901 +1/234/567/8901 12345678901 2345678901 `; // 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