Posted by: msh134 on: June 21, 2008
From various sources I have collected the following regular expression patterns. They helped me a lot in front-end and back-end validation.
Alpha:
Pattern: ^[a-zA-Z_ ]+$
Description: Allows only ‘A-Z’, ‘a-z’, space ( ‘ ‘ ) and underscore ( ‘_’).
Alphanumeric:
Pattern: ^[a-zA-Z0-9_ ]+$
Description: Allows only ‘A-Z’, ‘a-z’, ‘0-9′, space ( ‘ ‘ ) and underscore ( ‘_’).
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