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 = /(MacBook[1-7],\d|MacBookAir[1-4],\d|MacBookPro[1-8],\d|Macmini[1-5],\d|iMac(1[0-2]|[4-9]|),\d|^MacPro[1-5],\d$)/gm; // Alternative syntax using RegExp constructor // const regex = new RegExp('(MacBook[1-7],\\d|MacBookAir[1-4],\\d|MacBookPro[1-8],\\d|Macmini[1-5],\\d|iMac(1[0-2]|[4-9]|),\\d|^MacPro[1-5],\\d$)', 'gm') const str = `Model information: https://support.apple.com/en-us/HT210222 Published Date: February 01, 2021 Validation: https://regex101.com/r/p5r9WT/3/ This regex is exact. No new models are supported. (MacBookAir[5-9]|MacBookPro(9|1[0-6])|MacPro[6-7]|iMac(Pro1|1[3-9]|20)|MacBook(10|9|8)|Macmini[6-8]),\\d pattern matches: https://support.apple.com/en-us/HT201608 Supported: MacBook10,1 MacBook9,1 MacBook8,1 Unsupported: MacBook7,1 MacBook6,1 MacBook5,2 MacBook5,1 MacBook4,1 MacBook3,1 MacBook2,1 MacBook1,1 https://support.apple.com/en-us/HT201862 Supported: MacBookAir9,1 MacBookAir8,2 MacBookAir8,1 MacBookAir7,2 MacBookAir7,2 MacBookAir7,1 MacBookAir6,2 MacBookAir6,1 MacBookAir6,2 MacBookAir6,1 MacBookAir5,2 MacBookAir5,1 Unsupported: MacBookAir4,2 MacBookAir4,1 MacBookAir3,2 MacBookAir3,1 MacBookAir2,1 MacBookAir1,1 https://support.apple.com/en-us/HT201300 Supported: MacBookPro16,3 MacBookPro16,2 MacBookPro16,1 MacBookPro15,4 MacBookPro15,3 MacBookPro15,2 MacBookPro15,1 MacBookPro14,3 MacBookPro14,2 MacBookPro14,1 MacBookPro13,3 MacBookPro13,2 MacBookPro13,1 MacBookPro11,5 MacBookPro11,4 MacBookPro12,1 MacBookPro11,3 MacBookPro11,2 MacBookPro11,1 MacBookPro10,1 MacBookPro11,1 MacBookPro10,2 MacBookPro10,1 MacBookPro9,2 MacBookPro9,1 Unsupported: MacBookPro8,3 MacBookPro8,2 MacBookPro8,1 MacBookPro7,1 MacBookPro6,2 MacBookPro6,1 MacBookPro5,5 MacBookPro5,4 MacBookPro5,3 MacBookPro5,2 MacBookPro5,1 MacBookPro4,1 MacBookPro3,1 MacBookPro2,2 MacBookPro2,1 MacBookPro1,2 MacBookPro1,1 https://support.apple.com/en-us/HT201894 Supported: Macmini8,1 Macmini7,1 Macmini6,2 Macmini6,1 Unsupported: Macmini5,3 Macmini5,2 Macmini5,1 Macmini4,1 Macmini3,1 Macmini2,1 Macmini1,1 https://support.apple.com/en-us/HT201634 Supported: iMac20,2 iMac20,1 iMac19,2 iMac19,1 iMac18,3 iMac18,2 iMac18,1 iMac17,1 iMac16,2 iMac16,1 iMac15,1 iMac14,4 iMac14,3 iMac14,2 iMac14,1 iMac13,2 iMac13,1 Unsupported: iMac12,2 iMac12,1 iMac11,3 iMac11,2 iMac11,1 iMac10,1 iMac9,1 iMac8,1 iMac7,1 iMac6,1 iMac5,2 iMac5,1 iMac4,2 iMac4,1 iMac,1 https://support.apple.com/en-us/HT210222 Supported: iMacPro1,1 https://support.apple.com/en-us/HT202888 Supported: MacPro7,1 MacPro6,1 Unsupported: MacPro5,1 MacPro4,1 MacPro3,1 MacPro2,1 MacPro1,1`; // 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