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

/
/
gim

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

const regex = /([\u0300–\u036F\u1AB0–\u1AFF\u1DC0–\u1DFF\u20D0–\u20FF\uFE20–\uFE2F\u0483-\u0486\u05C7\u0610-\u061A\u0656-\u065F\u0670\u06D6-\u06ED\u0711\u0730-\u073F\u0743-\u074A\u0F18-\u0F19\u0F35\u0F37\u0F72-\u0F73\u0F7A-\u0F81\u0F84\u0e00-\u0eff\uFC5E-\uFC62])/gim; // Alternative syntax using RegExp constructor // const regex = new RegExp('([\\u0300–\\u036F\\u1AB0–\\u1AFF\\u1DC0–\\u1DFF\\u20D0–\\u20FF\\uFE20–\\uFE2F\\u0483-\\u0486\\u05C7\\u0610-\\u061A\\u0656-\\u065F\\u0670\\u06D6-\\u06ED\\u0711\\u0730-\\u073F\\u0743-\\u074A\\u0F18-\\u0F19\\u0F35\\u0F37\\u0F72-\\u0F73\\u0F7A-\\u0F81\\u0F84\\u0e00-\\u0eff\\uFC5E-\\uFC62])', 'gim') const str = `กิิิิิิิิิิิิิิิิิิิิ ก้้้้้้้้้้้้้้้้้้้้ ก็็็็็็็็็็็็็็็็็็็็ ก็็็็็็็็็็็็็็็็็็็็ กิิิิิิิิิิิิิิิิิิิิ ก้้้้้้้้้้้้้้้้้้้้ ก็็็็็็็็็็็็็็็็็็็็ กิิิิิิิิิิิิิิิิิิิิ ก้้้้้้้้้้้้้้้้้้้้ กิิิิิิิิิิิิิิิิิิิิ ก้้้้้้้้้้้้้้้้้้้้ ก็็็็็็็็็็็็็็็็็็็็ ก็็็็็็็็็็็็็็็็็็็็ กิิิิิิิิิิิิิิิิิิิิ ก้้้้้้้้้้้้้้้้้้้้ ก็็็็็็็็็็็็็็็็็็็็ กิิิิิิิิิิิิิิิิิิิิ ก้้้้้้้้้้้้้้้้้้้้ sasdasdasdasdasdasdU0300 normal text `; const subst = `[$1]`; // The substituted value will be contained in the result variable const result = str.replace(regex, subst); console.log('Substitution result: ', result);

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