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

Substitution

Processing...

Code Generator

Language

Generated Code

const regex = /.*\s(\d{11}|\d{5}\s\d{3}\s\d{3}|\d{5}\s\d{6}|\d{14}|\+\d{12}|\+\d{3}\s\d{3}\s\d{3}\s\d{3}|\d{4}\s\d{3}\s\d{3})\s.*/gm; // Alternative syntax using RegExp constructor // const regex = new RegExp('.*\\s(\\d{11}|\\d{5}\\s\\d{3}\\s\\d{3}|\\d{5}\\s\\d{6}|\\d{14}|\\+\\d{12}|\\+\\d{3}\\s\\d{3}\\s\\d{3}\\s\\d{3}|\\d{4}\\s\\d{3}\\s\\d{3})\\s.*', 'gm') const str = `fdsgf dsgfd ggfs s 07123452670 ar gs fgsdf gsdf t hth rt hrth rth 07812 345 931 tr yrt rty try erty tr ytr y 07412 123466 tr yert y tery ert y 00447912345188 etry ert y tery etr yrt yret +971557017442 ert yert yrety et yetr yertytr ety ert y +971 557 856 832 etry rt ytr y etr yerty etry erty 0414 934 993 erty etry etry`; const subst = `$1`; // The substituted value will be contained in the result variable const result = str.replace(regex, subst); console.log('Substitution result: ', result);

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