Chapter 4. Error Handling inForms

In This Chapter

• Project I: Checking for Empty Form Fields

• Project II: Checking for Erroneous Data in Form Fields

• Project III: Letting the User Know What's Wrong

• Recap

• Advanced Projects

In the second half of the book, we will be working on the Web site of Stitch Magazine—a fictional online fashion magazine. It's racy, visually interesting, and its reporters are remarkably good at spotting trends, tracking down reclusive designers, and unearthing embarrassing gossip. However, the magazine is beginning to grow up and needs more interactivity to enhance its Web site content. In the next two chapters, we'll use JavaScript to affect changes in other frames and implement some truly advanced JavaScript for a rare user experience. In this chapter, we'll learn how to check forms for user-entered errors.