Regular Expressions 101

Save & Share

  • Regex Version: ver. 2
  • Update Regex
    ctrl+⇧+s
  • Save new Regex
    ctrl+s
  • Add to Community Library

Flavor

  • PCRE2 (PHP >=7.3)
  • PCRE (PHP <7.3)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java 8
  • .NET 7.0 (C#)
  • Rust
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests

Tools

Sponsors
There are currently no sponsors. Become a sponsor today!
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

/
/
g

Test String

Code Generator

Language

Generated Code

const regex = /(?<=(ch-name">)|(?<=ch-time">)|(?<=ch-type">)|(?<=ch-text">))[\s\S]*?(?=<\/)/g; // Alternative syntax using RegExp constructor // const regex = new RegExp('(?<=(ch-name">)|(?<=ch-time">)|(?<=ch-type">)|(?<=ch-text">))[\\s\\S]*?(?=<\\\/)', 'g') const str = `<ul id="channelList"> <li class="odd"> <span class="ch-type">Canlı</span><!-- 1--> <span class="ch-time">06:30</span><!-- 2--> <div class="ch-desc"> <span class="ch-name">NBA TV</span><!-- 3--> <span class="ch-text">Sacramento Kings - N.Orleans Pelicans (Basketbol)</span><!-- 4--> </div> </li> <li class="even"> <span class="ch-type">Canlı</span> <span class="ch-time">07:45</span> <div class="ch-desc"> <span class="ch-name">TRT Spor</span> <span class="ch-text">İlk Baskı (Futbol)</span> </div> </li> <li class="odd"> <span class="ch-type">Canlı</span> <span class="ch-time">11:00</span> <div class="ch-desc"> <span class="ch-name">TRT Spor</span> <span class="ch-text">Spor Manşet (Futbol)</span> </div> </li> <li class="even"> <span class="ch-type">Canlı</span> <span class="ch-time">11:05</span> <div class="ch-desc"> <span class="ch-name">NTV Spor</span> <span class="ch-text">Spor Servisi (Futbol)</span> </div> </li> <li class="odd"> <span class="ch-type">Canlı</span> <span class="ch-time">12:15</span> <div class="ch-desc"> <span class="ch-name">TRT Spor</span> <span class="ch-text">Set-Maç-Smaç (Voleybol)</span> </div> </li> <li class="even"> <span class="ch-type">Canlı</span> <span class="ch-time">13:00</span> <div class="ch-desc"> <span class="ch-name">Kanal 58</span> <span class="ch-text">Sivas Bld. - Pendikspor (Futbol)</span> </div> </li> <li class="odd"> <span class="ch-type">Canlı</span> <span class="ch-time">13:00</span> <div class="ch-desc"> <span class="ch-name">Kardelen TV</span> <span class="ch-text">BB Erzurumspor - Zonguldak (Futbol)</span> </div> </li> <li class="even"> <span class="ch-type">Canlı</span> <span class="ch-time">14:00</span> <div class="ch-desc"> <span class="ch-name">Lig Tv</span> <span class="ch-text">Futbol Gündemi (Futbol)</span> </div> </li> <li class="odd"> <span class="ch-type">Canlı</span> <span class="ch-time">14:00</span> <div class="ch-desc"> <span class="ch-name">NTV Spor</span> <span class="ch-text">Spor Aktüel (Futbol)</span> </div> </li> <li class="even"> <span class="ch-type">Canlı</span> <span class="ch-time">20:00</span> <div class="ch-desc"> <span class="ch-name">Tivibu Spor</span> <span class="ch-text">Doğru Taktik (Futbol)</span> </div> </li> <li class="odd"> <span class="ch-type">Canlı</span> <span class="ch-time">20:00</span> <div class="ch-desc"> <span class="ch-name">NTV Spor</span> <span class="ch-text">Kırmızı Çizgi (Futbol)</span> </div> </li> <li class="even"> <span class="ch-type">Canlı</span> <span class="ch-time">20:00</span> <div class="ch-desc"> <span class="ch-name">A Spor</span> <span class="ch-text">Beşiktaş SJ - Zielona Gora (Basketbol)</span> </div> </li> <li class="odd"> <span class="ch-type">Canlı</span> <span class="ch-time">20:30</span> <div class="ch-desc"> <span class="ch-name">Eurosport 2</span> <span class="ch-text">Lokomotiv Kuban - Valencia Basket (Basketbol)</span> </div> </li> <li class="even"> <span class="ch-type">Canlı</span> <span class="ch-time">21:00</span> <div class="ch-desc"> <span class="ch-name">TRT Spor</span> <span class="ch-text">Futbol Keyfi (Futbol)</span> </div> </li> <li class="odd"> <span class="ch-type">Canlı</span> <span class="ch-time">21:00</span> <div class="ch-desc"> <span class="ch-name">Tivibu Spor</span> <span class="ch-text">Ters Köşe (Futbol)</span> </div> </li> <li class="even"> <span class="ch-type">Canlı</span> <span class="ch-time">22:00</span> <div class="ch-desc"> <span class="ch-name">TRT Spor</span> <span class="ch-text">Devler Sahnesi (Futbol)</span> </div> </li> <li class="odd"> <span class="ch-type">Canlı</span> <span class="ch-time">22:00</span> <div class="ch-desc"> <span class="ch-name">Smartspor 2</span> <span class="ch-text">Aris - Banvit (Basketbol)</span> </div> </li> <li class="even"> <span class="ch-type">Canlı</span> <span class="ch-time">22:15</span> <div class="ch-desc"> <span class="ch-name">Eurosport 2</span> <span class="ch-text">Bilbao Basket - Khimki Moskova (Basketbol)</span> </div> </li> <li class="odd"> <span class="ch-type">Canlı</span> <span class="ch-time">23:00</span> <div class="ch-desc"> <span class="ch-name">NTV Spor</span> <span class="ch-text">Spor Gecesi (Futbol)</span> </div> </li> <li class="even"> <span class="ch-type">Canlı</span> <span class="ch-time">23:30</span> <div class="ch-desc"> <span class="ch-name">TRT Spor</span> <span class="ch-text">Spor Gecesi (Futbol)</span> </div> </li> <li class="odd"> <span class="ch-type">Canlı</span> <span class="ch-time">03:00</span> <div class="ch-desc"> <span class="ch-name">NBA TV</span> <span class="ch-text">Washington Wizards - Boston Celtics (Basketbol)</span> </div> </li></ul>`; // 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