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

/
/
gis

Test String

Code Generator

Language

Generated Code

const regex = /^(?:[[:^print:][:cntrl:]\s]|GIF89.{0,20})*<\?(?:php)?\s*[[:punct:]\s]+scama\s*spotify\s*v1[\s\#]+facebook:\s*fb\.com\/amyr\.gov\.tn+[[:punct:]\s]+.{0,200}?want\s*to\s*save\s*rzlt\s*.html(?:[^>]+>\s*)?$/gis; // Alternative syntax using RegExp constructor // const regex = new RegExp('^(?:[[:^print:][:cntrl:]\\s]|GIF89.{0,20})*<\\?(?:php)?\\s*[[:punct:]\\s]+scama\\s*spotify\\s*v1[\\s\\#]+facebook:\\s*fb\\.com\\\/amyr\\.gov\\.tn+[[:punct:]\\s]+.{0,200}?want\\s*to\\s*save\\s*rzlt\\s*.html(?:[^>]+>\\s*)?$', 'gis') const str = `<?php /* \$\$\$\$\$\$\\ \$\$\$\$\$\$\$\\ \$\$\$\$\$\$\\ \$\$\\ \$\$\\ \$\$\$\$\$\$\$\$\\ \$\$\\ \$\$\\ \$\$ __\$\$\\ \$\$ __\$\$\\ \$\$ __\$\$\\ \$\$\$\\ \$\$ | \\__\$\$ __|\$\$\$\\ \$\$ | \$\$ / \$\$ |\$\$ | \$\$ |\$\$ / \$\$ |\$\$\$\$\\ \$\$ | \$\$ | \$\$\$\$\\ \$\$ | \$\$\$\$\$\$\$\$ |\$\$\$\$\$\$\$ |\$\$ | \$\$ |\$\$ \$\$\\\$\$ |\$\$\$\$\$\$\\ \$\$ | \$\$ \$\$\\\$\$ | \$\$ __\$\$ |\$\$ __\$\$< \$\$ | \$\$ |\$\$ \\\$\$\$\$ |\\______|\$\$ | \$\$ \\\$\$\$\$ | \$\$ | \$\$ |\$\$ | \$\$ |\$\$ | \$\$ |\$\$ |\\\$\$\$ | \$\$ | \$\$ |\\\$\$\$ | \$\$ | \$\$ |\$\$ | \$\$ | \$\$\$\$\$\$ |\$\$ | \\\$\$ | \$\$ | \$\$ | \\\$\$ | \\__| \\__|\\__| \\__| \\______/ \\__| \\__| \\__| \\__| \\__| #==========================================# # Scama Spotify v1 # # facebook: fb.com/amyr.gov.tn # #==========================================# \$\$\$\$\$\$\\ \$\$\$\$\$\$\\ \$\$\\ \$\$\$\$\$\$\\ \$\$ __\$\$\\ \$\$\$ __\$\$\\ \$\$\$\$ | \$\$ __\$\$\\ \\__/ \$\$ |\$\$\$\$\\ \$\$ |\\_\$\$ | \$\$ / \$\$ | \$\$\$\$\$\$ |\$\$\\\$\$\\\$\$ | \$\$ | \\\$\$\$\$\$\$\$ | \$\$ ____/ \$\$ \\\$\$\$\$ | \$\$ | \\____\$\$ | \$\$ | \$\$ |\\\$\$\$ | \$\$ | \$\$\\ \$\$ | \$\$\$\$\$\$\$\$\\ \\\$\$\$\$\$\$ /\$\$\$\$\$\$\\\\\$\$\$\$\$\$ | \\________| \\______/ \\______|\\______/ */ \$aronxname = "ARON-TN";//<== Your Name \$aronxmail = "moncompteperso12x0@gmail.com"; //<== Your Email \$aronxsave = "no";//<== Write "On" if U want To Save RZlt .html ! ?> `; // 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