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

/
/
gm

Test String

Code Generator

Generated Code

const regex = /(?<= Name:)[\s]+[\d\w]+/gm; // Alternative syntax using RegExp constructor // const regex = new RegExp('(?<= Name:)[\\s]+[\\d\\w]+', 'gm') const str = `" Primary Location: MO0134 Name: 8930 WARD PKY FEDERAL BG Ownership: Federal Status: Active Address: 8930 WARD PKWY, KANSAS CITY, MO 64114 Facility Code: (None) Facility Name: (None) File Name: STRUCT-17110-GSA_WARDPKWY - R18.RVT File Title: Struct-17110-GSA-WardPkwy-R18.rvt Timeframe: Future Conditions Primary Context: PROJ 1234567 Title: (None) Year: (None) Sub-Context: (None) Title: (None) Lifecycle Stage: Site Acquisition Document Type: BIM Sheet Type: (None) Plan Type: (None) Disciplines Process Equipment Resource Building Levels: (None) Program Association: (None) Description: Struct-17110-GSA-WardPkwy-R18.rvt Mimetype: application/x-tika-msoffice Author: (None) Size: 26808320 Creator: admin Created Date: Mon 24 Jan 2022 00:19:41 UTC Modifier: jason.zhang@gsa.gov Modified Date: Thu 07 Jul 2022 04:05:50 UTC "`; // 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