JavaScript

Most programming languages contain good and bad parts, but JavaScript has more than its share of the bad, having been developed and released in a hurry before it could be refined. This authoritative book scrapes away these bad features to reveal a subset of JavaScript that's more reliable, readable, and maintainable than the language as a whole-a subset you can use to create truly extensible and efficient code.

Considered the JavaScript expert by many people in the development community, author Douglas Crockford identifies the abundance of good ideas that make JavaScript an outstanding object-oriented programming language-ideas such as functions, loose typing, dynamic objects, and an expressive object literal notation. Unfortunately, these good ideas are mixed in with bad and downright awful ideas, like a programming model based on global variables.

When Java applets failed, JavaScript became the language of the Web by default, making its popularity almost completely independent of its qualities as a programming language. In JavaScript: The Good Parts, Crockford finally digs through the steaming pile of good intentions and blunders to give you a detailed look at all the genuinely elegant parts of JavaScript, including:

• Syntax
• Objects
• Functions
• Inheritance
• Arrays
• Regular expressions
• Methods
• Style
• Beautiful features

The real beauty? As you move ahead with the subset of JavaScript that this book presents, you'll also sidestep the need to unlearn all the bad parts. Of course, if you want to find out more about the bad parts and how to use them badly, simply consult any other JavaScript book.

With JavaScript: The Good Parts, you'll discover a beautiful, elegant, lightweight and highly expressive language that lets you create effective code, whether you're managing object libraries or just trying to get Ajax to run fast. If you develop sites or applications for the Web, this book is an absolute must.

This Fifth Edition is completely revised and expanded to cover JavaScript as it is used in today's Web 2.0 applications. This book is both an example-driven programmer's guide and a keep-on-your-desk reference, with new chapters that explain everything you need to know to get the most out of JavaScript, including:

• Scripted HTTP and Ajax
• XML processing
• Client-side graphics using the canvas tag
• Namespaces in JavaScript--essential when writing complex programs
• Classes, closures, persistence, Flash, and JavaScript embedded in Java applications

Part I explains the core JavaScript language in detail. If you are new to JavaScript, it will teach you the language. If you are already a JavaScript programmer, Part I will sharpen your skills and deepen your understanding of the language.

Part II explains the scripting environment provided by web browsers, with a focus on DOM scripting with unobtrusive JavaScript. The broad and deep coverage of client-side JavaScript is illustrated with many sophisticated examples that demonstrate how to:

• Generate a table of contents for an HTML document
• Display DHTML animations
• Automate form validation
• Draw dynamic pie charts
• Make HTML elements draggable
• Define keyboard shortcuts for web applications
• Create Ajax-enabled tool tips
• Use XPath and XSLT on XML documents loaded with Ajax
• And much more

Part III is a complete reference for core JavaScript. It documents every class, object, constructor, method, function, property, and constant defined by JavaScript 1.5 and ECMAScript Version 3.

Part IV is a reference for client-side JavaScript, covering legacy web browser APIs, the standard Level 2 DOM API, and emerging standards such as the XMLHttpRequest object and the canvas tag.

More than 300,000 JavaScript programmers around the world have made this their indispensable reference book for building JavaScript applications.

"A must-have reference for expert JavaScript programmers...well-organized and detailed."
-- Brendan Eich, creator of JavaScript

JavaScript is essential for creating modern, interactive Web sites. But, unlike HTML and CSS, JavaScript is a true programming language with complex rules that are challenging for most Web designers to learn. In JavaScript: The Missing Manual, bestselling author David McFarland teaches you how to use JavaScript in sophisticated ways -- even if you have little or no programming experience.

In a clear, entertaining way, the book starts out by teaching you how to build a basic JavaScript program. Then, once you've mastered the structure and terminology, you'll learn how to use advanced JavaScript tools to add useful interactivity to your sites quickly and painlessly, rather than scripting everything from scratch.

To jump-start your progress, the book offers several "living examples" -- step-by-step tutorials for building Web site components with JavaScript using raw materials, such as graphics and half-completed Web pages, that you can download from the book's companion Web site.

In this book, you will learn:

• How to get started. The book introduces the building blocks of JavaScript, and general tips on computer programming. Learn to add scripts to a Web page; store and manipulate information; communicate with the browser window; respond to events like mouse clicks and form submissions; and identify and modify HTML.
• How to build Web Page Features. McFarland provides real-world examples of JavaScript in action. Learn to create pop-up navigation bars, enhance HTML tables, build an interactive photo gallery, and make Web forms more usable. Create interesting user interfaces with tabbed panels, accordion panels and pop-up dialog boxes.
• How to troubleshoot and debug. The book will teach you how to avoid the ten most common errors new programmers make, and how to find and fix bugs.
• How to communicate with the Web server. In addition to basic JavaScript, this manual covers Ajax, the approach that made JavaScript glamorous. Learn to use JavaScript to communicate with a server so that your Web pages can receive information without having to reload.

If you want to put JavaScript to work right away without getting tangled up in code, JavaScript: The Missing Manual is the best book available.

What people are saying about Building iPhone Apps w/ HTML, CSS, and JavaScript

"The future of mobile development is clearly web technologies like CSS, HTML and JavaScript. Jonathan Stark shows you how to leverage your existing web development skills to build native iPhone applications using these technologies."
--John Allsopp, author and founder of Web Directions

"Jonathan's book is the most comprehensive documentation available for developing web applications for mobile Safari. Not just great tech coverage, this book is an easy read of purely fascinating mobile tidbits in a fun colloquial style. Must have for all PhoneGap developers."
-- Brian LeRoux, Nitobi Software

It's a fact: if you know HTML, CSS, and JavaScript, you already have the tools you need to develop your own iPhone apps. With this book, you'll learn how to use these open source web technologies to design and build apps for the iPhone and iPod Touch on the platform of your choice-without using Objective-C or Cocoa.

Device-agnostic mobile apps are the wave of the future, and this book shows you how to create one product for several platforms. You'll find guidelines for converting your product into a native iPhone app using the free PhoneGap framework. And you'll learn why releasing your product as a web app first helps you find, fix, and test bugs much faster than if you went straight to the App Store with a product built with Apple's tools.

• Build iPhone apps with tools you already know how to use
• Learn how to make an existing website look and behave like an iPhone app
• Add native-looking animations to your web app using jQTouch
• Take advantage of client-side data storage with apps that run even when the iPhone is offline
• Hook into advanced iPhone features -- including the accelerometer, geolocation, and vibration -- with JavaScript
• Submit your applications to the App Store with Xcode

This book received valuable community input through O'Reilly's Open Feedback Publishing System (OFPS). Learn more at http://labs.oreilly.com/ofps.html.

So you're ready to make the leap from writing HTML and CSS web pages to creating dynamic web applications. You want to take your web skills to the next level. And you're finally ready to add "programmer" to the resume. It sounds like you're ready to learn the Web's hottest programming language: JavaScript. Head First JavaScript is your ticket to going beyond copying and pasting the code from someone else's web site, and writing your own interactive web pages.

With Head First JavaScript, you learn:

• The basics of programming, from variables to types to looping
• How the web browser runs your code, and how you can talk to the browser with your code
• Why you'll never have to worry about casting, overloading, or polymorphism when you're writing JavaScript code
• How to use the Document Object Model to change your web pages without making your users click buttons