Head First Ajax Code: Chapter 11, Forms and Validation

Everyone makes mistakes from time to time.

Give a human being a chance to talk (or type) for a few minutes, and they'll probably make at least one or two mistakes. So how do your web apps respond to those mistakes? You've got to validate your users' input and react when that input has problems. But who does what? What should your web page do? What should your JavaScript do? And what's the role of the server in validation and data integrity? Turn the page to answer all of these questions, and a lot more...

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