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

/
/
gms

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"^var (.*?Infos) = .*?data: (.*?),$"; string substitution = @"var $1 = {\n data: $1_data,"; string input = @"var syntheticResponseTimeDistributionInfos = { data: {""result"": {""minY"": 1.0, ""minX"": 0.0, ""ticks"": [[0, ""Requests having \nresponse time <= 500ms""], [1, ""Requests having \nresponse time > 500ms and <= 1,500ms""], [2, ""Requests having \nresponse time > 1,500ms""], [3, ""Requests in error""]], ""maxY"": 37.0, ""series"": [{""data"": [[0.0, 37.0]], ""color"": ""#9ACD32"", ""isOverall"": false, ""label"": ""Requests having \nresponse time <= 500ms"", ""isController"": false}, {""data"": [], ""color"": ""yellow"", ""isOverall"": false, ""label"": ""Requests having \nresponse time > 500ms and <= 1,500ms"", ""isController"": false}, {""data"": [], ""color"": ""orange"", ""isOverall"": false, ""label"": ""Requests having \nresponse time > 1,500ms"", ""isController"": false}, {""data"": [[3.0, 1.0]], ""color"": ""#FF6347"", ""isOverall"": false, ""label"": ""Requests in error"", ""isController"": false}], ""supportsControllersDiscrimination"": false, ""maxX"": 3.0, ""title"": ""Synthetic Response Times Distribution""}}, getOptions: function() { return { var activeThreadsOverTimeInfos = { data: {""result"": {""minY"": 1.0, ""minX"": 1.5931058172E12, ""maxY"": 1.0, ""series"": [{""data"": [[1.5931058186E12, 1.0], [1.5931058196E12, 1.0], [1.5931058175E12, 1.0], [1.5931058185E12, 1.0], [1.5931058195E12, 1.0], [1.5931058205E12, 1.0], [1.5931058184E12, 1.0], [1.5931058194E12, 1.0], [1.5931058204E12, 1.0], [1.5931058173E12, 1.0], [1.5931058183E12, 1.0], [1.5931058193E12, 1.0], [1.5931058203E12, 1.0], [1.5931058172E12, 1.0], [1.5931058213E12, 1.0], [1.5931058192E12, 1.0], [1.5931058202E12, 1.0], [1.5931058212E12, 1.0], [1.5931058181E12, 1.0], [1.5931058191E12, 1.0], [1.5931058201E12, 1.0], [1.5931058211E12, 1.0], [1.593105818E12, 1.0], [1.593105819E12, 1.0], [1.59310582E12, 1.0], [1.593105821E12, 1.0], [1.5931058179E12, 1.0], [1.5931058189E12, 1.0], [1.5931058209E12, 1.0], [1.5931058178E12, 1.0], [1.5931058198E12, 1.0], [1.5931058208E12, 1.0], [1.5931058177E12, 1.0], [1.5931058187E12, 1.0], [1.5931058197E12, 1.0], [1.5931058207E12, 1.0], [1.5931058176E12, 1.0]], ""isOverall"": false, ""label"": ""ThreadGroup"", ""isController"": false}, {""data"": [[1.5931058224E12, 1.0], [1.5931058217E12, 1.0]], ""isOverall"": false, ""label"": ""tearDown Thread Group"", ""isController"": false}], ""supportsControllersDiscrimination"": false, ""granularity"": 100, ""maxX"": 1.5931058224E12, ""title"": ""Active Threads Over Time""}}, getOptions: function() { "; RegexOptions options = RegexOptions.Multiline | RegexOptions.Singleline; Regex regex = new Regex(pattern, options); string result = regex.Replace(input, substitution); } }

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