A regular expression to match valid filenames. Can be used to validate filenames entered by a user of an application, or the filename of files uploaded from a scanner.
/^[a-zA-Z0-9](?:[a-zA-Z0-9 ._-]*[a-zA-Z0-9])?\.[a-zA-Z0-9_-]+$/
A short yet useful regular expression that matches a number between 1 and 100.
/^(0|[1-9][0-9]?|100)$/
A regular expression which can match anything except one or more words in a string. It is a handy one if you want to skip some words in your index file.
/^(?!regex$|pattern$).*/
A regular expression that matches the number at the end of a string.
/\d+$/
This regular expression can be used to strictly match and validate Canadian postal codes (cannot start with W or Z and cannot contain the letters D, F, I, O, Q, or U).
/[ABCEGHJKLMNPRSTVXY][0-9][ABCEGHJKLMNPRSTVWXYZ][0-9][ABCEGHJKLMNPRSTVWXYZ][0-9]/
A regular expression that matches all blank lines in a document. This can be useful in deleting blank/empty lines generated in Sublime 2/3.
/^(\r|\n\r?)/
A regular expression to match all characters in a string except space (unless in quotes).
/\w+|"[\w\s]*"/
A regular expression that can be used to match and validate Arabic characters in a string.
/^[\u0621-\u064A]+$/
A regular expression that can be used to match and validate Russian Cyrillic alphabet characters.
/[U+0400–U+04FF]/g
A useful regular expression that matches international phone numbers in the E.164 (The international public telecommunication numbering plan) format.
/^\+?[1-9]\d{1,14}$/