Interactive PDF forms are often treated as little more than electronic versions of paper documents. A user enters information, selects a few checkboxes, prints or saves the document, and moves on.
Adobe Acrobat, however, is capable of much more.
With thoughtful form design and properly structured Acrobat JavaScript, an ordinary PDF can become an intelligent desktop application capable of validating information, formatting entries, performing calculations, managing records, controlling navigation, and helping users complete complex tasks more efficiently.
After more than three decades of designing interactive PDF forms, I have learned that the greatest challenge is rarely writing the JavaScript itself. The real challenge is understanding how Acrobat behaves when that JavaScript becomes part of a working form.
Acrobat JavaScript Is Not Browser JavaScript
