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

/
/
gm

Test String

Code Generator

Language

Generated Code

const regex = /(\u00a9|\u00ae|\u203c|\u2049|\u20e3|\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]|\u2640|\u2642|[\u2648-\u2653]|[\u265f-\u2660]|\u2663|[\u2665-\u2666]|\u2668|\u267b|[\u267e-\u267f]|[\u2692-\u2697]|\u2699|[\u269b-\u269c]|[\u26a0-\u26a1]|\u26a7|[\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)|(\ud83c(\udc04|\udccf|[\udd70-\udd71]|[\udd7e-\udd7f]|\udd8e|[\udd91-\udd9a]|[\udde6-\uddff]|[\ude01-\ude02]|\ude1a|\ude2f|[\ude32-\ude3a]|[\ude50-\ude51]|[\udf00-\udf21]|[\udf24-\udf93]|[\udf96-\udf97]|[\udf99-\udf9b]|[\udf9e-\udff0]|[\udff3-\udff5]))|(\ud83d([\udc00-\udcfd]|[\udcff-\udd3d]|[\udd49-\udd4e]|[\udd50-\udd67]|[\udd6f-\udd70]|[\udd73-\udd7a]|\udd87|[\udd8a-\udd8d]|\udd90|[\udd95-\udd96]|[\udda4-\udda5]|\udda8|[\uddb1-\uddb2]|\uddbc|[\uddc2-\uddc4]|[\uddd1-\uddd3]|[\udddc-\uddde]|\udde1|\udde3|\udde8|\uddef|\uddf3|[\uddfa-\ude4f]|[\ude80-\udec5]|[\udecb-\uded2]|[\uded5-\uded7]|[\udedd-\udee5]|\udee9|[\udeeb-\udeec]|\udef0|[\udef3-\udefc]|[\udfe0-\udfeb]))|(\ud83e([\udd0c-\udd3a]|[\udd3c-\udd45]|[\udd47-\uddff]|[\ude70-\ude74]|[\ude78-\ude7c]|[\ude80-\ude86]|[\ude90-\udeac]|[\udeb0-\udeba]|[\udec0-\udec5]|[\uded0-\uded9]|[\udee0-\udee7]))|(\udb40([\udc62-\udc63]|\udc65|\udc67|\udc6c|\udc6e|[\udc73-\udc74]))/gm; // Alternative syntax using RegExp constructor // const regex = new RegExp('(\\u00a9|\\u00ae|\\u203c|\\u2049|\\u20e3|\\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]|\\u2640|\\u2642|[\\u2648-\\u2653]|[\\u265f-\\u2660]|\\u2663|[\\u2665-\\u2666]|\\u2668|\\u267b|[\\u267e-\\u267f]|[\\u2692-\\u2697]|\\u2699|[\\u269b-\\u269c]|[\\u26a0-\\u26a1]|\\u26a7|[\\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)|(\\ud83c(\\udc04|\\udccf|[\\udd70-\\udd71]|[\\udd7e-\\udd7f]|\\udd8e|[\\udd91-\\udd9a]|[\\udde6-\\uddff]|[\\ude01-\\ude02]|\\ude1a|\\ude2f|[\\ude32-\\ude3a]|[\\ude50-\\ude51]|[\\udf00-\\udf21]|[\\udf24-\\udf93]|[\\udf96-\\udf97]|[\\udf99-\\udf9b]|[\\udf9e-\\udff0]|[\\udff3-\\udff5]))|(\\ud83d([\\udc00-\\udcfd]|[\\udcff-\\udd3d]|[\\udd49-\\udd4e]|[\\udd50-\\udd67]|[\\udd6f-\\udd70]|[\\udd73-\\udd7a]|\\udd87|[\\udd8a-\\udd8d]|\\udd90|[\\udd95-\\udd96]|[\\udda4-\\udda5]|\\udda8|[\\uddb1-\\uddb2]|\\uddbc|[\\uddc2-\\uddc4]|[\\uddd1-\\uddd3]|[\\udddc-\\uddde]|\\udde1|\\udde3|\\udde8|\\uddef|\\uddf3|[\\uddfa-\\ude4f]|[\\ude80-\\udec5]|[\\udecb-\\uded2]|[\\uded5-\\uded7]|[\\udedd-\\udee5]|\\udee9|[\\udeeb-\\udeec]|\\udef0|[\\udef3-\\udefc]|[\\udfe0-\\udfeb]))|(\\ud83e([\\udd0c-\\udd3a]|[\\udd3c-\\udd45]|[\\udd47-\\uddff]|[\\ude70-\\ude74]|[\\ude78-\\ude7c]|[\\ude80-\\ude86]|[\\ude90-\\udeac]|[\\udeb0-\\udeba]|[\\udec0-\\udec5]|[\\uded0-\\uded9]|[\\udee0-\\udee7]))|(\\udb40([\\udc62-\\udc63]|\\udc65|\\udc67|\\udc6c|\\udc6e|[\\udc73-\\udc74]))', 'gm') const str = `English test 简体中文测试 片仮名／かたかな／カタカナ 平仮名（ひらがな）(hiragana) 😀 ⚡ ☯ ➿ 🇨🇳 🏴󠁧󠁢󠁥󠁮󠁧󠁿 🏃🏼`; 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