Foundations of Ajax

Ajax burst onto the Web development scene by offering highly interactive, desktop-like Web applications that can be deployed through any modern Web browser without the need for special plug-ins. Ajax is built on existing Web technologies such as JavaScript, HTML, and CSS, and it is used in conjunction with your favorite server-side language. Foundations of Ajax explains how to combine these technologies effectively to implement Ajax into your new or existing Web applications. Like you, we are developers who are in the trenches, tasked with building Web-enabled applications that provide real value to our customers. As the Web continues to grow, the demand for more expressive and engaging interfaces will continue to increase.

Much of the early hype surrounding Ajax centered on its use by Internet powerhouses such as Google and Amazon. However, just because the initial forays into Ajax were pioneered by leading software development firms doesn't mean your application wouldn’t also benefit from these techniques. You already know how to develop Web applications, so this book uses specific, focused examples to teach the Ajax tools and techniques you’ll need to bring your applications to life. Armed with this book and your existing development expertise, you too will be able to apply Ajax techniques to your application to enrich the end users experience.

Ajax Design Patterns Creating Web 2.0 Sites with Programming and Usability Patterns

Ajax, or Asynchronous JavaScript and XML, exploded onto thescene in the spring of 2005 and remains the hottest story among webdevelopers. With its rich combination of technologies, Ajax provides astrong foundation for creating interactive web applications with XML orJSON-based web services by using JavaScript in the browser to processthe web server response.

Ajax Design Patterns shows you bestpractices that can dramatically improve your web development projects.It investigates how others have successfully dealt with conflictingdesign principles in the past and then relays that informationdirectly to you.

The patterns outlined in the book fall into fourcategories:

• Foundational technology: Examines the raw technologiesrequired for Ajax development
• Programming: Exposes techniques that developers havediscovered to ensure their Ajax applications are maintainable
• Functionality and usability: Describes the types of userinterfaces you'll come across in Ajax applications, as well as the newtypes of functionality that Ajax makes possible
• Development: Explains the process being used to monitor,debug, and test Ajax applications

Ajax Hacks

Ajax, the popular term for Asynchronous JavaScript and XML, is one of the most important combinations of technologies for web developers to know these days. With its rich grouping of technologies, Ajax developers can create interactive web applications with XML-based web services, using JavaScript in the browser to process the web server response. Taking complete advantage of Ajax, however, requires something more than your typical "how-to" book. What it calls for is Ajax Hacks from O'Reilly. This valuable guide provides direct, hands-on solutions that take the mystery out of Ajax's many capabilities. Each hack represents a clever way to accomplish a specific task, saving you countless hours of searching for the right answer. A smart collection of 80 insider tips and tricks, Ajax Hacks covers all of the technology's finer points. Want to build next-generation web applications today? This book can show you how. Among the multitude of topics addressed, it shows you techniques for: Using Ajax with Google Maps and Yahoo Maps Displaying Weather.com data Scraping stock quotes Fetching postal codes Building web forms with auto-complete functionality

AJAX: Creating Web Pages with Asynchronous JavaScript and XML

Book Description

The Easy, Example-Based Guide to Ajax for Every Web Developer

Using Ajax, you can build Web applications with the sophistication and usability of traditional desktop applications and you can do it using standards and open source software. Now, for the first time, there’s an easy, example-driven guide to Ajax for every Web and open source developer, regardless of experience.

Edmond Woychowsky begins with simple techniques involving only HTML and basic JavaScript. Then, one step at a time, he introduces techniques for building increasingly rich applications. Don’t worry if you’re not an expert on Ajax’s underlying technologies; Woychowsky offers refreshers on them, from JavaScript to the XMLHttpRequest object. You’ll also find multiple open source technologies and open standards throughout, ranging from Firefox to Ruby and MySQL.

You’ll not only learn how to write “functional” code, but also master design patterns for writing rocksolid, high-performance Ajax applications. You’ll also learn how to use frameworks such as Ruby on Rails to get the job done fast.

Sams Teach Yourself AJAX in 10 Minutes

Sams Teach Yourself Ajax in 10 Minutes is a concise introduction to the basics of building Ajax applications and the architecture and operation of these applications. You will learn the techniques employed in using Ajax, introducing Ajax and explaining how it may be used to solve realistic user interface problems. You will be able to immediately begin building web applications, and will have platform from which to explore more advanced aspects of Ajax.


Contents:

Part 1 - A Refresher on Web Technologies: Anatomy of a Website; Writing Web Pages in HTML; Sending Requests Using HTTP; Client-Side Coding Using JavaScript; Server-Side Programming in PHP; A Brief Introduction to XML

Part 2 - Introducing Ajax: Anatomy of an Ajax Application; The XMLHTTPRequest Object; Talking with the Server; Using the Returned Data; Our First Ajax Application

Ajax For Dummies

Ajax is short for “Asynchronous JavaScript+CSS+DOM+XMLHttpRequest.”

Even if you weren’t intimidated before, that tidbit is probably enough to make you reach for the Excedrin. Just reach for Ajax For Dummies instead. With screen shots, actual code and explanations, and live Web sites where you can see Ajax applications doing their thing, it will have you using Ajax to create Web applications that look an act like desktop applications in no time. With Ajax, you can speed up and clean up your Web applications. Shoppers at your online store can fill their carts without waiting for multiple page refreshes. Searchers on your sites can get instant results on the same page.

This guide takes you on a tour of how Ajax is used today, complete with examples of Ajax applications in action, such as an Ajax-enabled Yahoo! search or an Ajax-based chat application. Then it gives you basics on using JavaScript. After that you dive in and get info on:

• Writing some Ajax, interactive mouseovers using Ajax, passing data to the server with GET or POST, and more
• Connecting to Google for a live search
• Using free Ajax frameworks so you don’t have to start from scratch, including Ajax Gold (written specifically for this book), AJAXLib, and grabbing XML with libXmlRequest
• All kinds of Ajax techniques, such as using Ajax for drag-and-drop operations, pop-up menus, downloading images behind the scenes, and more
• Using SACK (simple AJAX code kit), decoding XML with Sarissa, and creating visual effects with Rico
• Handling XML int Ajax Applications
• Working with cascading style sheets (CCS) in Ajax, including setting up the styles, displaying a menu, styling text, handling colors and backgrounds, and more
• Working with Ajax and PHP

Professional Ajax

Written for experienced web developers, Professional Ajax shows how to combine tried-and-true CSS, XML, and JavaScript technologies into Ajax. This provides web developers with the ability to create more sophisticated and responsive user interfaces and break free from the "click-and-wait" standard that has dominated the web since its introduction.

Professional Ajax discusses the range of request brokers (including the hidden frame technique, iframes, and XMLHttp) and explains when one should be used over another. You will also learn different Ajax techniques and patterns for executing client-server communication on your web site and in web applications. By the end of the book, you will have gained the practical knowledge necessary to implement your own Ajax solutions. In addition to a full chapter case study showing how to combine the book's Ajax techniques into an AjaxMail application, Professional Ajax uses many other examples to build hands-on Ajax experience. Some of the other examples include:

• web site widgets for a news ticker, weather information, web search, and site search
• preloading pages in online articles
• incremental form validation
• using Google Web APIs in Ajax
• creating an autosuggest text box

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21 errors of a PHP-programmer. Part III

Description of seven last fatal errors. These errors are conceptual on their nature and cause errors described in the 1st and 2nd part of the article. They also include such errors as insufficient attention paid to the project in whole and to the program code as its part.

One of the main advantages of PHP is its disadvantage at the same time: PHP is very easy to learn. This attracts many people but in spite of its false easiness its rather difficult to learn right and effective usage of this language.

As a rule we deal with insufficient programming praxis. Inexperienced programmers face the necessity of complicated web-applications creation. Thus the mistakes are frequently done which an experienced programmer could evade such as unjustified usage of printf() function or wrong usage of PHP semantics.

In this series including three articles the most typical from our point of view errors are presented. These errors may be classified on some categories from non-critic to the fatal ones. Together with these errors analysis the ways of their evading are described and also some little tricks which have been collected for many years of programming praxis are presented.