Regular Expressions 101

Un pequeño regex para validar si el telefono pertenece a El Salvador

search text matching any word

replace token like [foo:bar:ba zz]

The file name validation algorithm from MS KB905231, I assumed the prohibited suffixes included the file extension. I.e. 'foo.doc.files' would not match but 'foo.files.doc' would.

Get directive names from javascript code

Second line of the machine readable passport, based on the excellent article here - http://www.highprogrammer.com/alan/numbers/mrp.html

any format, check domain to make sure it's a youtube url

LG G3 Device identifier:LG-D855, LG-D851, LG-D850, VS985 4G, LGLS990, LGUS990, LG-D852

Length of 5 or 7. if 7, it should start with 20.

Validate Phone number even if contain country code

retrieve multiple lines from an email body.