mari belajar Regular Expression

Today, I`m very happy becoz i learn new subject.. Regular Expression...
It`s cool to do validations or masking input for forms.

These links are very helpful
http://www.regular-expressions.info/javascript.html
http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Guide:Regular_Expressions
http://www.websina.com/bugzero/kb/regexp.html