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

@"
"

Test String

Code Generator

Generated Code

const regex = new RegExp('^', '') const str = `<?php namespace App\\Jobs\\Library\\Domain; use Illuminate\\Bus\\Queueable; use App\\Services\\YorLinkService; use Illuminate\\Queue\\SerializesModels; use Illuminate\\Queue\\InteractsWithQueue; use Illuminate\\Contracts\\Queue\\ShouldQueue; use Illuminate\\Foundation\\Bus\\Dispatchable; class AddDomainLink implements ShouldQueue { use Dispatchable, InteractsWithQueue, Queueable, SerializesModels; protected string \$link_id; protected string \$domain_id; protected string \$path; protected YorLinkService \$yorLinkService; /** * Create a new job instance. * * @param \$link_id * @param \$domain_id * @param \$path */ public function __construct(string \$link_id, string \$domain_id, string \$path) { \$this->yorLinkService = new YorLinkService; \$this->link_id = \$link_id; \$this->domain_id = \$domain_id; \$this->path = \$path; } /** * @param \$yorLinkService */ public function setYorLinkServiceMock(\$yorLinkService) { \$this->yorLinkService = \$yorLinkService; } /** * Execute the job. * * @return void */ public function handle() { \$this->yorLinkService->createLink([ 'link_id' => \$this->link_id, 'domain_id' => \$this->domain_id, 'path' => \$this->path ]); } } `; // Reset `lastIndex` if this regex is defined globally // regex.lastIndex = 0; let m; if ((m = regex.exec(str)) !== null) { // 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