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 = /Title: (?<Title>.*$)[\s\S]*(?<PhoneNumber>\d{10})[\s\S]*When: (?<Date>.[a-zA-Z]*\s.\d*\s.[a-zA-Z]*\s\d*)\s(?<Time>.[0-9]*:[0-9]*[am|pm]* \S [0-9]*:[0-9]*[am|pm]*)[\s\S]*Where: (?<Where>.*?.*$)/gm; // Alternative syntax using RegExp constructor // const regex = new RegExp('Title: (?<Title>.*$)[\\s\\S]*(?<PhoneNumber>\\d{10})[\\s\\S]*When: (?<Date>.[a-zA-Z]*\\s.\\d*\\s.[a-zA-Z]*\\s\\d*)\\s(?<Time>.[0-9]*:[0-9]*[am|pm]* \\S [0-9]*:[0-9]*[am|pm]*)[\\s\\S]*Where: (?<Where>.*?.*$)', 'gm') const str = `You have been invited to the following event. Title: לקוח רועי 0544710385 When: Sat 28 Nov 2020 9:30pm – 10:30pm Israel Time Where: Mazal Keshet Street, Mazal Keshet St, Hod Hasharon, Israel Joining info: Join with Google Meet https://meet.google.com/ngv-fxvo-oyt Calendar: mplmp5e1vpvapd7fl5euj7g81ytfzlem@hook.integromat.com Who: * ecmanager8@gmail.com- organiser * My Automation Event details: https://calendar.google.com/calendar/event?action=VIEW&eid=NnNvbTJjMW82Z3I2YWJiMmNvbzM2YjlrYzloNmFiOW82Y3FtYWJiMWM0cDNnb3I1NzBzMzJkOXA2YyBtcGxtcDVlMXZwdmFwZDdmbDVldWo3ZzgxeXRmemxlbUBob29rLmludGVncm9tYXQuY29t&tok=MjAjZWNtYW5hZ2VyOEBnbWFpbC5jb20yODdjNWU1ZjU2ZjVjNWIwZmE4NmYwOTMxNzY5NTczMGNhNGJiN2E3&ctz=Asia%2FJerusalem&hl=en_GB&es=0 Invitation from Google Calendar: https://calendar.google.com/calendar/ You are receiving this courtesy email at the account mplmp5e1vpvapd7fl5euj7g81ytfzlem@hook.integromat.com because you are an attendee of this event. To stop receiving future updates for this event, decline this event. Alternatively, you can sign up for a Google Account at https://calendar.google.com/calendar/ and control your notification settings for your entire calendar. Forwarding this invitation could allow any recipient to send a response to the organiser and be added to the guest list, invite others regardless of their own invitation status or to modify your RSVP. Learn more at https://support.google.com/calendar/answer/37135#forwarding`; // 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