Aaron Gustafson

If you're a web developer with previous JavaScript and DOM scripting experience, Accelerated DOM Scripting with Ajax, APIs, and Libraries is perfect for you to take your knowledge to the next level.

This book is about JavaScript and using the document object model—the conduit to the HTML document. This book is not about learning how to program JavaScript from scratch. It starts with the assumption that you have done some JavaScript development before and understand the JavaScript syntax. This book builds on that knowledge to give you a deeper understanding of DOM scripting and how to apply that to your projects. It uses this new understanding to describe what JavaScript libraries are and show you how they can be applied to your project. The book will also explain Ajax and how best to plan and apply it to your projects. It explains how to build simple animation objects for adding movement to elements on the page. There are straightforward examples that demonstrate the techniques used throughout the book.

JavaScript has seen a resurgence in popularity over the past few years, and with it has come an exploration of the power of the language as well as what it can do within the browser. This book will explain techniques new and old—such as closures, encapsulation, and inheritance—that many are using and how you can best apply them to your own projects.

By reading this book, you should have a greater understanding of how JavaScript works and be able to use advanced concepts such as closures and event delegation to build more flexible applications for the Web. You'll walk away with a greater appreciation for JavaScript libraries and how they can simplify and speed up your development. You'll also be able to implement Ajax effectively into your site, create special effects, use JavaScript libraries, and know how best to apply these libraries to your projects.

What you’ll learn

• Where CSS, HTML, and the DOM fit into modern scripting, and how to use them together effectively
• Object-oriented programming techniques for more efficient JavaScript coding
• How to use JavaScript libraries such as Prototype in your work
• How to build effective form validation into your applications using Ajax
• How to create mashups using APIs
• How to build dynamic user interfaces

Who this book is for

This book is for beginner to intermediate developers, and already have knowledge of HTML, CSS, and JavaScript.

Table of Contents

1. The State of JavaScript
2. HTML, CSS, and JavaScript
3. Object-Oriented Programming
4. Libraries
5. Ajax and Data Exchange
6. Visual Effects
7. Form Validation and JavaScript
8. Case Study: FAQ Facelift
9. A Dynamic Help System

As a web designer or developer, you know how powerful DOM scripting is for enhancing web pages and applications, adding dynamic functionality and improving the user experience. You've got a reasonable understanding of JavaScript and the DOM, but now you want to take your skills further. This book is all you need—it shows you how to add essential functionality to your web pages, such as on the fly layout and style changes, interface personalization, maps and search using APIs, visual effects using JavaScript libraries, and much more.

• Includes a quick recap of the basics, for reference purposes
• Packed with real world JavaScript solutions from beginning to end
• Written by Beginning Google Maps author Jeffrey Sambells, and includes a case study by JavaScript guru Aaron Gustafson

What you’ll learn

• A quick recap of the HTML and CSS DOM, methods, and events
• The basics of how to add dynamic effects and respond to user actions to your web sites using CSS and JavaScript
• Introduces Ajax to the mix, showing you how to use it, and when not to use it
• Best practices (such as graceful degredation) and productivity improvement via code reuse (libraries and APIs)
• Create Mashups using search, photo and mapping APIs
• Build better, more dynamic user experiences using libraries such as Prototype and Scriptaculous

Who this book is for

This book is for intermediate to advanced web designers and developers who already have a reasonable to good knowledge of HTML, CSS, and JavaScript.

Step-by-step guide reveals best practices for enhancing Web sites with Ajax

• A step-by-step guide to enhancing Web sites with Ajax.
• Uses progressive enhancement techniques to ensure graceful degradation (which makes sites usable in all browsers).
• Shows readers how to write their own Ajax scripts instead of relying on third-party libraries.

Web site designers love the idea of Ajax--of creating Web pages in which information can be updated without refreshing the entire page. But for those who aren't hard-core programmers, enhancing pages using Ajax can be a challenge. Even more of a challenge is making sure those pages work for all users. In Bulletproof Ajax, author Jeremy Keith demonstrates how developers comfortable with CSS and (X)HTML can build Ajax functionality without frameworks, using the ideas of graceful degradation and progressive enhancement to ensure that the pages work for all users. Throughout this step-by-step guide, his emphasis is on best practices with an approach to building Ajax pages called Hijax, which improves flexibility and avoids worst-case scenarios.