To learn more about the topics covered in this chapter, be sure to read the following online articles:
A good article on the hidden cost of code reuse. As mentioned at the end of the chapter, it may at times seem like creating reusable code has too high a cost initially. Read more at http://www.iweek.com/708/08iuhid.htm.
In this chapter, we looked at using regular expressions on the client-side for form validation. For more information on this, be sure to read this article, http://www.asptoday.com/articles/19990629.htm, which presents a library of regular expressions for form validation.
Another good article focusing on form validation using regular expressions can be found at http://www.4guysfromrolla.com/webtech/050399-2.shtml.