Regular Expressions 101

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Community Patterns

0

Html tag match

ECMAScript (JavaScript)
Html tag match
Submitted by anonymous - a year ago
0

Valid Emmet Candidate before Expansion

PCRE2 (PHP >=7.3)
ul>(li2>a{link$@-})2 is a valid string that can be expanded by Emmet, while `` is not.
Submitted by Chattille - a year ago (Last modified a year ago)
0

Library catalogue (VTECH V-Lib)

Python
Matches entries in a library catalogue.
Submitted by anonymous - a year ago
0

ejemplo 2

PCRE2 (PHP >=7.3)
este es el ejemplo de Expr numero 2
Submitted by anonymous - a year ago
0

Match path that starts with

ECMAScript (JavaScript)
In my nuxt automation I want to remove src from path because nuxt don't have src dir. hence I want to remove src prefix from all path
Submitted by JD Solanki - a year ago (Last modified a year ago)
0

Tracking Number Recognition and Parsing

PCRE (PHP <7.3)
T
Submitted by anonymous - a year ago
0

reuse-patterns-using-capture-groups

ECMAScript (JavaScript)
resolving the free code camp reuse-patterns-using-capture-groups problem let repeatNum = "42 42 42"; let reRegex = /^(\d+)([" "])\1\2\1$/; ^ starts with (\d+) a digit with at least one char (or else will count spaces) and have a([" "])(space) after the digit and \1 to r...
Submitted by gabriel silva lima - a year ago
0

Additional

PCRE (PHP <7.3)
Splitting Additionalname in Basename and Specification
Submitted by JK - a year ago (Last modified a year ago)
0

use-capture-groups-to-search-and-replace

ECMAScript (JavaScript)
(\w+)(\s)(\w+)\2(\w+) in this exercise we have to use capture groups and then replace the string order to 'three two one'. But first, when you are using the capture group you may have asked yourself why the code below does not work: (\w+)(\s)\1\2\1 to match the sting "one two three"...
Submitted by gabriel silva lima - a year ago
0

Regex many

PCRE2 (PHP >=7.3)
Search and change many regex matches
Submitted by anonymous - a year ago
0

BDO client ID

PCRE2 (PHP >=7.3)
Validates client IDs
Submitted by anonymous - a year ago
0

Splitting Inconsistent Addresses

PCRE2 (PHP >=7.3)
This pattern matches inconsistent addresses that have various street names and coordinates. This captures the Address 1 & 2, Type of Street, Coordinates (NE, NW, SE,SW) City, State, and Full zip
Submitted by Nadira S Fant - a year ago
0

Salesforce - Flow Naming Conventions

PCRE2 (PHP >=7.3)
Ensure that Salesforce Flow name meets the following standards: - -
Submitted by anonymous - a year ago (Last modified a year ago)
0

Validate comma-separated list of values (allowed: words; digits; special characters; single non-trailing non-leading spaces;)

PCRE2 (PHP >=7.3)
Validate comma-separated list of values (allowed: words; digits; special characters; single non-trailing non-leading spaces;)
Submitted by anonymous - a year ago
0

Twitch data capturing

ECMAScript (JavaScript)
Matches the data sent by the twitch IRC and captures into various groups
Submitted by Bucky - a year ago (Last modified a year ago)
0

text has numbers

ECMAScript (JavaScript)
text has numbers
Submitted by vijay - a year ago
0

email matcher

PCRE2 (PHP >=7.3)
match some emails and extract their local part and domain
Submitted by dang duomg 191 - 6 months ago (Last modified 6 months ago)
1...898899900

Community Library Entry

0

Regular Expression
PCRE (PHP <7.3)

/
^(?:(?:(?:(3)\.?([01]2))\.?(\d{1,4})?)|(?:(3)\.?(1)\.?([469]\d?))|([1-2][0-9]|0?[1-9])\.?(?:(1[0-2]|0?[1-9])\.?(\d{1,4})?|(0)?)|(?:(31)\.?(?:(?:(0?[13578]|1[02])\.?(\d{1,4})?)|(0)?))|(?:(30)\.?(?:(?:(0?[13456789]|1[0-2])\.?(\d{1,4})?)|(0)?))|([0-9]))$
/
gm
Open regex in editor

Description

this regex is able to validate a date (format dd.mm.yyyy) in every state of user typing. i use it to ensure that the user isn't able to type in an invalid date at all (except from a leap year check which is done afterwards)

The regex also makes assumptions of 'missed' separators so 1234 is captured in groups which can then be transformed to \1.\2.\3 -> 12.3.4

It was intensively but not exhaustivly tested

Submitted by anonymous - 9 years ago