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 = /^(?!.*(anime|manga|hentai|sex|xxx))(.+)$/gmi; // Alternative syntax using RegExp constructor // const regex = new RegExp('^(?!.*(anime|manga|hentai|sex|xxx))(.+)$', 'gmi') const str = `127.0.0.1 www.animenewsnetwork.com www.animenewsnetwork.co.uk 127.0.0.1 watchseries.lt www.tv.com myanimelist.net www.crunchyroll.co.uk www.wikia.com www.anidb.net www.gogoanime.com 127.0.0.1 www.goodanime.net www.pinoyanime.tv www.animeultima.tv animewaffles.tv anilinkz.com www.animehere.com www.anime4fun.com www.animefreak.tv 127.0.0.1 www.animetake.com www.waoanime.tv waoanime.tv mangafox.me www.animeget.com www.animefushigi.com 127.0.0.1 www.crunchyroll.com vodlocker.com answers.yahoo.com www.animeultima.tv zeroanime.net 127.0.0.1 www.tv.com www.watchsnk.com www.sidereel.com www.adultswim.com video.adultswim.com www.solarmovie.tl 127.0.0.1 watch32.com www.kongregate.com www.roblox.com www.siliconera.com mmoculture.com www.mangawindow.com www.hulu.com 127.0.0.1 www.dualshockers.com www.madman.co.nz www.mangabb.me www.ovguide.com www.tvrage.com anime-odcinki.pl www.mangabird.com 127.0.0.1 attackontitan.blogspot.com www.yidio.com www.dubzonline.tv www.vanime.net soulskill.com www.agaleradosanimes.net www.tvmuse.com 127.0.0.1 www.anitube.se www.animestatic.com kotaku.com n4g.co www.animelite.net attackontitan.blogspot.com www.solarmovie.tl 127.0.0.1 www.mangatank.com www.nineanime.com mangadoom.com desene.tv www.graalians.com jkanime.net dynasty-scans.com 127.0.0.1 www.anime-stream24.net watchtvseries.to animetako.com www.gaiaonline.com megafilmeshd.net deseneanime.ro 127.0.0.1 www.animeforum.com www.veoh.com http://anime44.co.uk animesstream.com animetoplist.org aniver.se 127.0.0.1 letmewatchanime.com napisy.info www.animesfox-br.org www.letmewatchthis.ch vershingekinokyojin.com 127.0.0.1 www.videoweed.es www.novamov.com beta.miloyski.com www.2gb-hosting.com www.tomwans.com www.gigabyteupload.com 127.0.0.1 f1.ilivlite.com played.to www.vidbull.com watchseries.ag www.animefave.net www.animeseason.com www.gogoanime.com 127.0.0.1 www.animeplus.tv animewaffles.tv www.animeflavor.com www.animebox.tv www.anime44.com www.animehere.com www.soul-anime.net 127.0.0.1 anilinkz.com www.nwanime.com www.anime-sub.com www.centeranime.net www.animedose.net www.subbedanime.tv`; // 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