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
  • Match everything enclosed
    (?:...)
  • Capture everything enclosed
    (...)
  • 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

r"
"
gm

Test String

Code Generator

Language

Generated Code

const regex = new RegExp('(?:(?:^edit\\ \\"(.+)\\"$\\n)(?:^set\\ uuid\\ ([a-f0-9]{8}\\-(?:[a-f0-9]{4}\\-){3}[a-f0-9]{12})$\\n)(?:(?:^set\\ comment\\ )((?:(?!^set\\ )(?:.*$\\n))+)(?=^set\\ ))?(?:^set\\ service\\ (\\".+\\")$\\n)?(?:^set\\ extip\\ ((?:(?:\\d{1,3}\\.){3}(?:\\d{1,3}))(?:\\-(?:\\d{1,3}\\.){3}(?:\\d{1,3}))?)$\\n)(?:^set\\ extintf\\ \\"(.+)\\"$\\n)(?:^(set\\ portforward)\\ (enable)$\\n)?(?:^(set\\ color)\\ (\\d{1,2})$\\n)?(?:^set\\ mappedip\\ \\"((?:(?:\\d{1,3}\\.){3}(?:\\d{1,3}))(?:\\-(?:\\d{1,3}\\.){3}(?:\\d{1,3}))?)\\"$\\n)(?:^(set\\ protocol)\\ (.+)$\\n)?(?:^(set\\ extport)\\ (\\d{1,5}(?:\\-\\d{1,5})?)$\\n)?(?:^(set\\ mappedport)\\ (\\d{1,5}(?:\\-\\d{1,5})?)$\\n)?(?:^next$\\n(?:^$\\n)?))', 'gm') const str = `edit "VIP [DNS сервер site.com]" set uuid abcdef01-2345-6789-abcd-ef0123456789 set comment "Публикация IP-адреса для проекта \\"TEST\\" в ДЦ \\"Облако\\"" set service "HTTP Webserver" set extip 100.200.254.20 set extintf "DMZ [VLAN 100]" set portforward enable set color 3 set mappedip "10.100.200.5" set protocol udp set extport 53 set mappedport 2000-65535 next edit "VIP [NTP сервер site.com]" set uuid abcdef01-2345-6789-abcd-ef0123456789 set comment "Публикация IP-адреса для проекта \\"TEST\\" в ДЦ \\"Облако\\"" set service "NTP TCP Server" "NTP UDP Server" set extip 100.200.254.20-100.200.254.21 set extintf "DMZ [VLAN 100]" set portforward enable set color 3 set mappedip "10.100.200.5-10.100.200.6" set protocol udp set extport 123 set mappedport 1000-1999 next `; // 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