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

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"RJ.currentMP3Url = \'([\w\\\/-]+)'"; string input = @" </div> </div> </div> </div> </section> <script> RJ.currentMP3Url = 'mp3/Arian-Band-To-Ke-Ba-Man-Baashi'; RJ.currentMP3 = '40008'; RJ.currentMP3Type = 'mp3'; RJ.playingIndex = '0'; RJ.currentMP3Perm = 'Arian-Band-To-Ke-Ba-Man-Baashi'; RJ.currentAlbum = null; RJ.currentPlaylist = null; RJ.relatedMP3 = [{""next"":""Arian-Band-To-Ke-Ba-Man-Baashi"",""index"":0},{""next"":""Arian-Band-Bargard"",""index"":1},{""next"":""Arian-Band-Bishtar"",""index"":2},{""next"":""Arian-Band-Deltangiha"",""index"":3},{""next"":""Arian-Band-Faseleh"",""index"":4},{""next"":""Arian-Band-Delam-Barat-Tang-Shodeh"",""index"":5},{""next"":""Arian-Band-To-Moondi-o-Man"",""index"":6},{""next"":""Arian-Band-Nemidoonam"",""index"":7},{""next"":""Arian-Band-Baade-To"",""index"":8},{""next"":""Arian-Band-Too-Cheshaye-Man-Negah-Kon"",""index"":9},{""next"":""Arian-Band-Ta-Abaad"",""index"":10},{""next"":""Arian-Band-Gole-Man"",""index"":11},{""next"":""Arian-Band-Parvaz"",""index"":12},{""next"":""Arian-Band-Gole-Aftab-Gardoon"",""index"":13},{""next"":""Arian-Band-Parvaz-(Club-Mix)"",""index"":14},{""next"":""Arian-Band-Ghasedak"",""index"":15},{""next"":""Arian-Band-Baroon"",""index"":16},{""next"":""Arian-Band-Panjereh"",""index"":17},{""next"":""Arian-Band-Setareh"",""index"":18},{""next"":""Arian-Band-Ey-Javidan-Iran"",""index"":19},{""next"":""Arian-Band-Tab"",""index"":20},{""next"":""Arian-Band-Gole-Hamishe-Bahar"",""index"":21},{""next"":""Arian-Band-Afsoongar"",""index"":22},{""next"":""Arian-Band-Iran"",""index"":23},{""next"":""Arian-Band-The-Words-I-Love-You-(Feat-Chris-de-Burgh)"",""index"":24},{""next"":""Arian-Band-Bi-To-Ba-To"",""index"":25},{""next"":""Arian-Band-Aroom-Aroom"",""index"":26},{""next"":""Arian-Band-Lahzeh-ha"",""index"":27},{""next"":""Arian-Band-Bahooneh"",""index"":28},{""next"":""Arian-Band-Na-Mehraboon"",""index"":29},{""next"":""Arian-Band-Farda-Male-Mast"",""index"":30}]; RJ.nextMp3Base = '/mp3s/mp3/'; RJ.nextMp3AlbumBase = '/mp3s/album/'; RJ.playerVolume = 75; setupMP3Ping(); </script> "; RegexOptions options = RegexOptions.Multiline; foreach (Match m in Regex.Matches(input, pattern, options)) { Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index); } } }

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 C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx