Regular expressions ( Popular )

http://regexlib.com/

digits
^\d+$

classical Decimal
^\d+(?:\.\d{0,6})?$

Decimal with two points
^[-+]?[0-9]\d{0,7}(\.\d{1,2})?%?$

Currency(complete)   format = 9,999,999,999.00
^\$?([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)(.[0-9][0-9])?$

 Note: This topic will be updated periodically with more regular expersions

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