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Australian phone numbers: Matches all known formats incl normal 10-digit landline numbers (valid area code mandatory) 13, 1300, 1800, 1900, 1902 plus mobile 10 and 11-digit formats. Use a Replace function first to remove non-numerics which are probably separators (E.g. newNum = number.replace(/[\D]/g, ""). Please contact me if you find any valid Aussie numbers being rejected.

This provides an expression to calidate the four major credit cards. It can be easily broken up to use for a specific type of card. It does not validate the number being a potential real number, only in the correct format.

This regular expression matches 'Switch' card numbers - a payment method used extensively in the UK.

Matches U.S. dates with leading zeros and without and with 2 or four digit years

Matches currency input with or without commas.

This matches simple dates against 1 or 2 digits for the month, 1 or 2 digit for the day, and either 2 or 4 digits for the year

A regular expression to match phone numbers, allowing for an international dialing code at the start and hyphenation and spaces that are sometimes entered.

Matches standard 5 digit US Zip Codes, or the US ZIP + 4 Standard.

Regular expression to evaluate dutch-style phone numbers. Possible example prefixes: +31, +31(0), (+31)(0), 0, 0031 followed by 9 numbers (which can contain a space or -).

Regular expression to evaluate dutch zipcodes. This is an updated version of Roland Mensenkamp.

Will match the following date formats: Preceded by a Space, Left-parentheses, or at the beginning of a line. Followed by a Space, Right-parentheses, or Colon(:), word boundary or End of line. Can have / or - as separator. Accepts 2 digit year 00-99 or 4 digit years 1900-2099 (can modify to accept any range)

Uses backreferences and word boundaries to match repeated words seperated by whitespace without matching a word with the same ending as the next words beginning.

A very simple ISBN validation expression - it just checks for a 10 digit number where the last digit could also be a capital 'X'. Complete specs for ISBN available here: http://www.isbn.org/standards/home/isbn/international/html/usm4.htm. An enhancement would be to allow exactly 3 or 0 hyphens or 3 or 0 spaces, since these are also valid formats.

Dates day: d or dd, <= 31, month: m or mm, <= 12, year: yy or yyyy >= 1900, <= 2099

This is a pattern to search and verify that a decimal number ends with a 25, 50, 75, 0 or 00. It does match for a nothing after decimal also but I guess thats ok !!

Validates swedish zipcodes (postnr) with or without space between groups. With leading s- or not. Can be disconnected by removing ''(s-|S-){0,1}''.

Regex used in .NET to validate a date. Matches the following formats mm/dd/yy, mm/dd/yyyy, mm-dd-yy, mm-dd-yyyy This covers days with 30 or 31 days but does not handle February, it is allowed 30 days.

Checks for a valid windows file name (Must be used with the case-insensitive option Checks that the file has at lease one char, does not contain any invalid characters and does not have a reserved word as a file name. "If you see a " in the regex replace it with a " character"

Match any image insert in a tag . simply replace the .jpg in the pattern whit a variable of content type ex:.swf,.js,.gif and loop the pattern to retrieve all tag whit the contenttype pass trought.... Very useful when you have people uploading html document in your site and you want to retrieve all dependecy.

This is a modification of the zip code regular expression submitted by Steven Smith ([email protected]) It no longer matches 78754-12aA