Regular Expressions 101

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Community Patterns

1

Best birth date check

ECMAScript (JavaScript)
Format YYYY-MM-JJ
Submitted by anonymous - 3 months ago
1

Birth date check format yyyy-mm-dd

ECMAScript (JavaScript)
Start from 1900-01-01
Submitted by anonymous - 3 months ago
1

match time offset from timezone offset string

ECMAScript (JavaScript)
match offset from utc offset string returned by the timeZoneName property of an Intl.DateTimeFormat object. (see MDN documentation here)
Submitted by Lagoffre - 2 months ago (Last modified 2 months ago)
1

match a username after 'user:'

ECMAScript (JavaScript)
self explainatory title, username must not contain any exotic character.
Submitted by Lagoffre - 2 months ago
1

match a collection of usernames after tag 'users:' and between '[...]' and separated by commas

ECMAScript (JavaScript)
self explainatory title, usernames array must not contain any exotic character besides ,
Submitted by Lagoffre - 2 months ago
1

HTML attributes

ECMAScript (JavaScript)
Find specific HTML attributes
Submitted by Joseph R. - 2 months ago
1

RFC3339 Validator

PCRE (PHP <7.3)
RFC3339 Validator
Submitted by anonymous - 2 months ago (Last modified 2 months ago)
1

Instagram hashtag regex

ECMAScript (JavaScript)
Simple and easy regex to find valid IG hastags in a string
Submitted by Navanshu Rastogi - Febnik - 2 months ago (Last modified 2 months ago)
1

ObjAction(\s+\=|\=)(\s+\[|\[).*?\;

ECMAScript (JavaScript)
asdad
Submitted by anonymous - 2 months ago (Last modified a month ago)
1

Simple but powerful email

ECMAScript (JavaScript)
"/" - start of regular expression "^" - anchor to beginning of string Group: [a-z0-9]+ "[a-z0-9]" - Latin character or digit "+" - occurring ONE or more times...
Submitted by Diableros [https://github.com/Diableros] - 2 months ago (Last modified 2 months ago)
1

E-mail pattern for html input.

ECMAScript (JavaScript)
Simply e-mail pattern for html tag.
Submitted by KsaR99 - 2 months ago
1

Split Docker image into image name, tag and digest with all optional

Golang
Splits a Docker image string into the separate parts: image, tag, digest tag and digest are optional
Submitted by Roemer - 2 months ago
1

german date era with tolerance: n. Chr. or v. Chr. / n. Ztr of v. Ztr

ECMAScript (JavaScript)
Maches german era notations in date "v. Chr" and "v. Ztr" It is meant to be tolerant : periods and spaces are optional, and it is case insensitive
Submitted by Olivier CHEVET - a month ago
1

Timestamp Regex

ECMAScript (JavaScript)
matches a timestamp that is in the format of Aug 14, 2024, 10:12 AM or month shortcode followed by day, year, time in 12 hours
Submitted by astro - a month ago
1

url_validation_url_doğrulama

ECMAScript (JavaScript)
^ - This signifies the start of the expression. https?:// - This matches either "http://" or "https://". (www.)? - This makes the "www." subdomain optional. [A-z0-9]+ - This matches one or more alphanumeric characters for the domain name. . - This matches a literal period character. [A-z0-9]+ - This...
Submitted by Emre Yıldırım - a month ago
1

Word Pattern

ECMAScript (JavaScript)
Word Patterns - multilanguage Separating words that handle many use cases I needed, more than simple /\bword\b/gi. Below are some targeted test cases and acceptable failed cases: ...
Submitted by Bryan Ho - 24 days ago
1

Discord - Command Name

ECMAScript (JavaScript)
Verification of Application Command names for Discord's API. Useful for Discord applications. Source : discord.dev
Submitted by volcanofr - 21 days ago
1

GitHub URL Parser

ECMAScript (JavaScript)
A regular expression for extracting the author, repository name, and optional branch from a GitHub repository or tree URL. Handles both HTTP(S) and direct GitHub links.
Submitted by Xain - 20 days ago
1

GitLab URL Parser

ECMAScript (JavaScript)
A regular expression for extracting the author, repository name, and optional branch from a GitLab repository or tree URL. Handles both HTTP(S) and direct GitLab links.
Submitted by Xain - 20 days ago (Last modified 20 days ago)
1

Bitbucket URL Parser

ECMAScript (JavaScript)
A regular expression for extracting the author, repository name, and optional branch from a Bitbucket repository or tree URL. Handles both HTTP(S) and direct Bitbucket links.
Submitted by Xain - 20 days ago
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Community Library Entry

27

Regular Expression
PCRE (PHP <7.3)

/
(?(DEFINE) (?P<ver>\d+(?:\.\d+)*(?![.\d])) (?P<agent>Mozilla\/(?&ver)) (?P<os>(?&os_windows)|(?&os_linux)|(?&os_macintosh)|(?&os_ios)) (?P<os_windows>Windows[ ]\w+[ ](?&ver)) (?P<os_linux>Linux(?:[ ](?:i686|x86_64))?) (?P<os_macintosh>Macintosh) (?P<os_ios>(?:CPU[ ])?iPhone[ ]OS|CPU[ ]OS.*?like[ ]Mac[ ]OS[ ]X) (?P<device>(?&device_ios)|(?&device_firefox)|(?&device_android)) (?P<device_ios>iPhone|iPad) (?P<device_firefox>Mobile) (?P<device_android>Android(?:[ ](?&ver))?) (?P<browser> (?: (?&browser_ie) | (?&browser_safari) | (?&browser_chrome) | (?&browser_chromium) | (?&browser_firefox) | (?&browser_version) # | (?&browser_nexus) | (?&browser_mobile) | (?&browser_gsa) | (?&browser_quicklook) | (?&browser_opera) ) [ \/] (?: [A-Z\d]+\b(?!\.) | (?&ver) ) ) (?P<browser_safari>(?:Mobile[ ])?Safari) (?P<browser_chrome>Chrome) (?P<browser_chromium>\b\w+\b[ ]Chromium) (?P<browser_firefox>Firefox) (?P<browser_ie>MSIE) (?P<browser_version>Version) (?P<browser_nexus>Nexus[ ]\d+[ ]Build) (?P<browser_mobile>Mobile) (?P<browser_gsa>GSA) (?P<browser_quicklook>QuickLook) (?P<browser_opera>OPR) ) ^ (?:(?=.*?(?P<Agent>(?&agent)))) (?:(?=.*?(?P<OS>(?&os)))) (?:(?=.*?(?P<Device>(?&device))))? (?:(?=.*?(?P<Browser>(?&browser)(?:[ ](?&browser))*)))?
/
gmx
Open regex in editor

Description

From a (fairly large) list of User Agent strings, extract the OS, Browser, and Device Type.

Submitted by OnlineCop - 10 years ago (Last modified a year ago)