IN THIS CHAPTER
Performing date calculations
Validating date entry form fields
Now that date- and time-handling has stabilized in modern browsers, I hope more scripters look into incorporating these kinds of calculations into their pages. In Chapter 54 on the CD-ROM, for example, I show you an application that lets your web site highlight the areas that have been updated since each visitor's last surf ride through your pages—an application that relies heavily on date arithmetic and time zone conversion.
By international agreement, the world is divided into distinct time ...