This new edition of "Designing with JavaScript" offers an introduction to JavaScript for the designer. By teaching JavaScript in the context of its most powerful capability - document manipulation through the DOM - this book teaches the language, object, library, and DOM concepts, and also provides Web developers with useful strategies and techniques. The text provides sophisticated JavaScript libraries for improved and easier use of form validation, browser detection and cookies. The libraries provided in the book, and online, include: StateLib for efficiently maintaining the state of objects and variables through a cookie; PRSSLib for progressing style sheets over time to create visually exciting, dynamic, functional, data-integrated documents; and ValidDataLib for advanced but easy forms validation and forms control. For Web authors new to programming, this book aims to make programming in JavaScript easy and efficient with libraries and masks, teaches language concepts while applying them, and carefully reveals advanced concepts of DOM and JavaScript usage.