Regular Expressions 101

Save & Manage Regex

  • Current Version: 3
  • Save & Share
  • Community Library

Flavor

  • PCRE2 (PHP)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java
  • .NET 7.0 (C#)
  • Rust
  • PCRE (Legacy)
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests
Sponsors
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
Processing...

Test String

Code Generator

Language

Generated Code

// include the latest version of the regex crate in your Cargo.toml extern crate regex; use regex::Regex; fn main() { let regex = Regex::new(r"(?m)jquery-?[0-9.]*(.min|.slim|.slim.min)?\.js").unwrap(); let string = "https://www.staging2.villageofalamance.com/wp-includes/js/jquery/jquery.min.js https://www.staging2.villageofalamance.com/wp-includes/js/jquery/jquery.js https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.js https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.js https://code.jquery.com/jquery-3.5.1.min.js https://code.jquery.com/jquery-3.5.1.js https://code.jquery.com/jquery-3.5.1.slim.js https://code.jquery.com/jquery-3.5.1.slim.min.js https://c0.wp.com/c/5.2.2/wp-includes/js/jquery/jquery.js ## Shouldn't be excluded https://www.staging2.villageofalamance.com/wp-content/plugins/league-table/public/assets/js/tablesorter/jquery.tablesorter-min.js?ver=2.08 https://www.staging2.villageofalamance.com/wp-content/themes/bridge/js/plugins/jquery.appear.js?ver=5.6 https://www.staging2.villageofalamance.com/wp-content/themes/bridge/js/plugins/jquery.flexslider-min.js?ver=5.6"; // result will be an iterator over tuples containing the start and end indices for each match in the string let result = regex.captures_iter(string); for mat in result { println!("{:?}", mat); } }

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 Rust, please visit: https://docs.rs/regex/latest/regex/