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

Generated Code

const regex = new RegExp('(\\[|){\\n(?<tab> )"id": "[0-9]*",\\n\\<tab>"type": [0-9],\\n\\<tab>"content": "[^"]*",\\n\\<tab>"channel_id": "[0-9]*",\\n\\<tab>"author": {\\n(?<dtab> )"id": "[^"]*",\\n\\<dtab>"username": "[^"]*",\\n\\<dtab>"avatar": "[^"]*",\\n\\<dtab>"discriminator": "([0-9]{4}|[0-9])",\\n\\<dtab>"public_flags": [0-9]*,\\n\\<dtab>"flags": [0-9]*,\\n\\<dtab>"banner": (null|"[0-9]*"),\\n\\<dtab>"accent_color": (null|"[^"]*"),\\n\\<dtab>"global_name": "[^"]*",\\n\\<dtab>"avatar_decoration_data": (null|"[^"]*"),\\n\\<dtab>"banner_color": (null|"[^"]*")\\n\\<tab>},\\n\\<tab>"attachments": \\[[^\\]]*\\],\\n\\<tab>"embeds": \\[[^\\]]*],\\n\\<tab>"mentions": \\[[^\\]]*],\\n\\<tab>"mention_roles": \\[[^\\]]*\\],\\n\\<tab>"pinned": (true:|false),\\n\\<tab>"mention_everyone": (true|false),\\n\\<tab>"tts": (true:|false),\\n\\<tab>"timestamp": "[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}.[0-9]{6}\\+[0-9]{2}:[0-9]{2}",\\n\\<tab>"edited_timestamp": (null|"[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}.[0-9]{6}\\+[0-9]{2}:[0-9]{2}"),\\n\\<tab>"flags": [0-9]*,\\n\\<tab>"components": \\[[^\\]]*]\\n}(\\]|\\,|)', 'gm') const str = `{ "id": "1145344233713188874", "type": 0, "content": "913 - this icecream good", "channel_id": "1124414874454339715", "author": { "id": "746383273621717104", "username": "kalote.", "avatar": "95b9bdc7aa5784a2354e2ec5256ae736", "discriminator": "0", "public_flags": 128, "flags": 128, "banner": null, "accent_color": null, "global_name": "Carrot :3", "avatar_decoration_data": null, "banner_color": null }, "attachments": [], "embeds": [], "mentions": [], "mention_roles": [], "pinned": false, "mention_everyone": false, "tts": false, "timestamp": "2023-08-27T13:09:04.784000+00:00", "edited_timestamp": null, "flags": 0, "components": [] },`; // 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