Teach yourself the essentials of JavaScript -- one step at time. With this practical hands-on tutorial, you'll learn how to use JavaScript techniques and key features to create interactive Web applications. You get detailed coverage of AJAX, jQuery, and much more. Write JavaScript code with text editors, programs, and IDEs Understand and work with the six JavaScript data types Use the Document Object Model to retrieve, create, and change HTML elements Validate and provide feedback for user input on Web forms Create rollover images and slideshow effects Use JavaScript to manipulate CSS styles Develop interactive Web applications using AJAX Speed up development with JavaScript frameworks such as jQuery Your online learning resources include: Practice files Fully searchable online edition of the book -- with unlimited access on the Web