Regular Expressions 101

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(/^\d{0,}(([.]{1})?\d?){0,}$/gi

Matches everything but digits and allows for one decimal point. cannot start with a negative Allowed: 123...

asdasd

Finds all website URLs

will match ^/teacher//list$ ^/teacher//file/$ ^/teacher//info/$ ...

(204)555-5555 (204)-(555)-(5555) 204-555-5555 To: 2045555555

Adds german special characters äöüß to the default HTML5 regex

Parse CSS Selector in the form element#id.class into its components. Any of the three elements can be missing.

Grab a first name from a full name string

Standardized RGB 256 Notation for CSS Functions. For Example: const str = "255, 255, 255"; // Match const str = "0, 10, 200"; // Match ...

IPv4 string check in JavaScript RegEx

Matches the expression inside the "cron()" expression of a SSM Window.

CSI is a documentation standard for Architectural buildings and specifications in construciton. Tihs matches the code based on the typical patterns in ues and returns the Number and the description if it iexists. May need retooling for Autodesk Model checker.

This is a regex that allows you to match INSEE codes for a french municipality. It is different from a french postal code, because it can have "A" or "B" in its second character, used in codes for cities located in Corse. Example: 2A004 for Ajaccio. ...

email regex with subdomain

Purpose This pattern is used to parse human readable text strings regarding file sizes. The pattern names four capture groups in the string for the following purposes: ...

regex for user name with criteria: Minimum 2 character Maximum 30 character Character must be alphanumeric, except first character is alphabetical Character "_" and "." is allowed once between first and last character

replace url that has a hash or slash with slash

must use at least three of the four available character types: lowercase letters, uppercase letters, numbers, and symbols.