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

/
/
gmi

Test String

Code Generator

Language

Generated Code

const regex = /^[\s\u00A9\u00AE\u203C\u2049\u2122\u2139\u2194-\u2199\u21A9-\u21AA\u231A-\u231B\u2328\u23CF\u23E9-\u23F3\u23F8-\u23FA\u24C2\u25AA-\u25AB\u25B6\u25C0\u25FB-\u25FE\u2600-\u2604\u260E\u2611\u2614-\u2615\u2618\u261D\u2620\u2622-\u2623\u2626\u262A\u262E-\u262F\u2638-\u263A\u2648-\u2653\u2660\u2663\u2665-\u2666\u2668\u267B\u267F\u2692-\u2694\u2696-\u2697\u2699\u269B-\u269C\u26A0-\u26A1\u26AA-\u26AB\u26B0-\u26B1\u26BD-\u26BE\u26C4-\u26C5\u26C8\u26CE-\u26CF\u26D1\u26D3-\u26D4\u26E9-\u26EA\u26F0-\u26F5\u26F7-\u26FA\u26FD\u2702\u2705\u2708-\u270D\u270F\u2712\u2714\u2716\u271D\u2721\u2728\u2733-\u2734\u2744\u2747\u274C\u274E\u2753-\u2755\u2757\u2763-\u2764\u2795-\u2797\u27A1\u27B0\u27BF\u2934-\u2935\u2B05-\u2B07\u2B1B-\u2B1C\u2B50\u2B55\u3030\u303D\u3297\u3299\u1F004\u1F0CF\u1F170-\u1F171\u1F17E-\u1F17F\u1F18E\u1F191-\u1F19A\u1F201-\u1F202\u1F21A\u1F22F\u1F232-\u1F23A\u1F250-\u1F251\u1F300-\u1F321\u1F324-\u1F393\u1F396-\u1F397\u1F399-\u1F39B\u1F39E-\u1F3F0\u1F3F3-\u1F3F5\u1F3F7-\u1F4FD\u1F4FF-\u1F53D\u1F549-\u1F54E\u1F550-\u1F567\u1F56F-\u1F570\u1F573-\u1F579\u1F587\u1F58A-\u1F58D\u1F590\u1F595-\u1F596\u1F5A5\u1F5A8\u1F5B1-\u1F5B2\u1F5BC\u1F5C2-\u1F5C4\u1F5D1-\u1F5D3\u1F5DC-\u1F5DE\u1F5E1\u1F5E3\u1F5EF\u1F5F3\u1F5FA-\u1F64F\u1F680-\u1F6C5\u1F6CB-\u1F6D0\u1F6E0-\u1F6E5\u1F6E9\u1F6EB-\u1F6EC\u1F6F0\u1F6F3\u1F910-\u1F918\u1F980-\u1F984\u1F9C0}]+$/gmi; // Alternative syntax using RegExp constructor // const regex = new RegExp('^[\\s\\u00A9\\u00AE\\u203C\\u2049\\u2122\\u2139\\u2194-\\u2199\\u21A9-\\u21AA\\u231A-\\u231B\\u2328\\u23CF\\u23E9-\\u23F3\\u23F8-\\u23FA\\u24C2\\u25AA-\\u25AB\\u25B6\\u25C0\\u25FB-\\u25FE\\u2600-\\u2604\\u260E\\u2611\\u2614-\\u2615\\u2618\\u261D\\u2620\\u2622-\\u2623\\u2626\\u262A\\u262E-\\u262F\\u2638-\\u263A\\u2648-\\u2653\\u2660\\u2663\\u2665-\\u2666\\u2668\\u267B\\u267F\\u2692-\\u2694\\u2696-\\u2697\\u2699\\u269B-\\u269C\\u26A0-\\u26A1\\u26AA-\\u26AB\\u26B0-\\u26B1\\u26BD-\\u26BE\\u26C4-\\u26C5\\u26C8\\u26CE-\\u26CF\\u26D1\\u26D3-\\u26D4\\u26E9-\\u26EA\\u26F0-\\u26F5\\u26F7-\\u26FA\\u26FD\\u2702\\u2705\\u2708-\\u270D\\u270F\\u2712\\u2714\\u2716\\u271D\\u2721\\u2728\\u2733-\\u2734\\u2744\\u2747\\u274C\\u274E\\u2753-\\u2755\\u2757\\u2763-\\u2764\\u2795-\\u2797\\u27A1\\u27B0\\u27BF\\u2934-\\u2935\\u2B05-\\u2B07\\u2B1B-\\u2B1C\\u2B50\\u2B55\\u3030\\u303D\\u3297\\u3299\\u1F004\\u1F0CF\\u1F170-\\u1F171\\u1F17E-\\u1F17F\\u1F18E\\u1F191-\\u1F19A\\u1F201-\\u1F202\\u1F21A\\u1F22F\\u1F232-\\u1F23A\\u1F250-\\u1F251\\u1F300-\\u1F321\\u1F324-\\u1F393\\u1F396-\\u1F397\\u1F399-\\u1F39B\\u1F39E-\\u1F3F0\\u1F3F3-\\u1F3F5\\u1F3F7-\\u1F4FD\\u1F4FF-\\u1F53D\\u1F549-\\u1F54E\\u1F550-\\u1F567\\u1F56F-\\u1F570\\u1F573-\\u1F579\\u1F587\\u1F58A-\\u1F58D\\u1F590\\u1F595-\\u1F596\\u1F5A5\\u1F5A8\\u1F5B1-\\u1F5B2\\u1F5BC\\u1F5C2-\\u1F5C4\\u1F5D1-\\u1F5D3\\u1F5DC-\\u1F5DE\\u1F5E1\\u1F5E3\\u1F5EF\\u1F5F3\\u1F5FA-\\u1F64F\\u1F680-\\u1F6C5\\u1F6CB-\\u1F6D0\\u1F6E0-\\u1F6E5\\u1F6E9\\u1F6EB-\\u1F6EC\\u1F6F0\\u1F6F3\\u1F910-\\u1F918\\u1F980-\\u1F984\\u1F9C0}]+$', 'gmi') const str = `Test with Unicode עברית Test with Unicode and Emoji ? עברית `; // 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