CHAPTER 13Form Handling
One of the most common uses of JavaScript is for checking the contents of forms before sending them to server-side programs. Commonly known as form validation, this use of JavaScript was actually one of the original driving forces behind the development of the language and, as a result, many of the techniques presented in this chapter will work in even the oldest JavaScript implementations. However, progress has been made in this ancient application of script code because HTML5 improves our possibilities. Throughout the chapter, we will also remind readers that, while the script syntax of this common use of JavaScript may be simple, it is consistently misapplied. To address this trend, we will try to present many execution ...
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