Regular Expressions 101

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Community Patterns

1

URL Checker

ECMAScript (JavaScript)
Allows to extract or check if the text includes different URLs, allowing for you to check different kinds of links from the simple ones up to the more complex ones that includes prefix, subdomain, domain, entire website name and subpages.
Submitted by kyunishya - 6 months ago
1

Match morse code

ECMAScript (JavaScript)
This matches morse code input and leaves word break spaces
Submitted by Ember - 6 months ago
1

Kafka loki parser

Golang
Kafka loki parser
Submitted by anonymous - 7 months ago
1

OpenWeather API Key Regex

ECMAScript (JavaScript)
A simple regex to match API keys for OpenWeather map. Matches 32 hexadecimal character strings.
Submitted by anonymous - 7 months ago
1

Roblox Account Cookie RegExp

ECMAScript (JavaScript)
A regex to match against Roblox cookies. Two captures; the first is the warning text; the second is the cookie itself.
Submitted by anonymous - 7 months ago
1

Discord Bot Token

ECMAScript (JavaScript)
JS/TS regex for token validation.
Submitted by anonymous - 7 months ago
1

hyphenize

ECMAScript (JavaScript)
convert 16 chars into four hyphen separated groups
Submitted by mco - 7 months ago
1

English address

ECMAScript (JavaScript)
English address that can start with numbers, # sign or words (\w) followed with any combination of previously mentioned. Multi-line, global and case insensitive supported. Address CANNOT START WITH \w character _ or 0 or any other symbols
Submitted by Dr St Clair Clarke - 7 months ago (Last modified 7 months ago)
1

REGEX for parsing Received value in email headers (RFC822)

ECMAScript (JavaScript)
Example: Received: from VI1PR0102CA0029.eurprd01.prod.exchangelabs.com (2603:10a6:802::42) by VE1PR01MB5599.eurprd01.prod.exchangelabs.com (2603:10a6:803:11f::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2602.12; Thu, 9 Jan ...
Submitted by anonymous - 7 months ago
1

nomor telp lokal wakanda

ECMAScript (JavaScript)
indonesian telephone number
Submitted by aku dewe - 7 months ago
1

Validate and split street and house number (leading house number)

ECMAScript (JavaScript)
Validate and split street address (street and house number) with leading house number
Submitted by anonymous - 7 months ago
1

Validate and split street and house number (trailing house number)

ECMAScript (JavaScript)
Validate and split street address (street and house number) with trailing house number
Submitted by anonymous - 7 months ago (Last modified 7 months ago)
1

Validate email address (unicode)

ECMAScript (JavaScript)
Validate unicode email addresses
Submitted by anonymous - 7 months ago
1

goff

ECMAScript (JavaScript)
[ [ { "content": "_}24I:9t58Tu?m@e", "isParticipating": true, "groupNum": 0,...
Submitted by anonymous - 7 months ago
1

Alpha Numeric With Spaces & Limited Punctuation

ECMAScript (JavaScript)
This allows multiple continuous strings of only alpha numeric characters & limiting punctuation to: ?().,'+ /:@-
Submitted by anonymous - 7 months ago (Last modified 7 months ago)
2

Match each Unicode Characters, Symbols, and Emojis consecutively

ECMAScript (JavaScript)
RegExp matches each (combined) Unicode symbol, character, or emoji consecutively. Note: there are some edge cases where it does not combine some symbols that should be seen as one symbol (after Default Grapheme Cluster Boundary of UAX #29). For Unicode code point info see codepoints.net Also, see ...
Submitted by MAZ01001 - 8 months ago
1

Regex URL validation pattern

ECMAScript (JavaScript)
Regex URL validation pattern
Submitted by Septian Maulana - 8 months ago
1

Regex to find URLs in text

ECMAScript (JavaScript)
Regex to find URLs in text
Submitted by Saheed Odulaja - 8 months ago
1

Cron Job Regular Expression for JavaScript / ECMAScript

ECMAScript (JavaScript)
Simple pattern for validating Cron Job descriptors in your JavaScript / TypeScript / ECMAScript projects. Includes support for date ranges, day ranges, digit ranges, divisors... all of the things you'd expect to encounter in possible Cron values.
Submitted by Nicholas Berlette (https://github.com/nberlette) - 8 months ago
1

Non-Empty String

ECMAScript (JavaScript)
This simply checks if the string is not empty spaces.
Submitted by anonymous - 8 months ago
12345...180

REGEX for parsing Received value in email headers (RFC822)

1

Regular Expression
ECMAScript (JavaScript)

/
(?:\sfrom\s+(?<from>[^\s*]+)[\s]*(?:(?:[\[\(.]?(?<fromh>.*?)?\.?\ *?[\[\(]?(?<fromip>(?:[0-9a-z]*?[\.\:]+[0-9a-z]*?)+)?[\)\]]+)?)(?=[\s;]+(?:by|with|via|id|for|;)\s*?)|\s+by\s+(?<byv>.*?)(?:\s+?\((?:[a-z\-\.]*?\s+)*?\[?(?<byip>(?:(?:[0-9a-z]*?[\.\:]+[0-9a-z]*?)+))*\]?\)?)?(?=[\s;]+(?:from|with|via|id|for|;)\s*?)|\s+via\s+(?<via>[a-z0-9\.\s]*?)(?=(?:\s*;|[\s]+(?:from|by|with|for|id|;))\s*?)|\swith\s+(?<protocol>(?:.|\s)*?)(?=(?:\s*;|[\s]+(?:from|by|via|for|id|;))\s*?)|\s+id\s+(?<id>[^\s;]+)(?=(?:\s*;|[\s]+(?:from|by|via|with|for|;))\s*?)|\s+for\s+<?(?<for>[^\s;>]+)>?(?=(?:\s*;|[\s]+(?:from|by|via|with|id|;))\s*?)|;\s+(?<date>[a-z]{3},\s+[0-9]{1,2}\s+[a-z]{3,4}\s+[0-9]{4}\s+[0-9]{2}\:[0-9]{2}\:[0-9]{2}\s+(?:-[0-9]{4}\s+)?(?:\([a-z]+\)|\+[0-9]{4}))?\n?)
/
gmi
Open regex in editor

Description

Example: Received: from VI1PR0102CA0029.eurprd01.prod.exchangelabs.com (2603:10a6:802::42) by VE1PR01MB5599.eurprd01.prod.exchangelabs.com (2603:10a6:803:11f::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2602.12; Thu, 9 Jan 2020 16:34:13 +0000

will give details for the emitter (from), receiver (by), for, date, ...

Submitted by anonymous - 7 months ago