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Foundations of Ajax
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Kurzbeschreibung
Ajax is hot news for developers! With examples like Google Maps, Google Suggest, Gmail, and Tada List, we have highly dynamic web applications that are nearly as feature rich as their thick client brethren. Using the Ajax techniques in this book, you can provide your customers with the rich user experience they have come to expect while still enjoying the ease of deployment you’ve come to expect of web applications. In this Ajax book you will also learn that browser-based applications have none of the complex distribution problems that plague thick-client applications. Once a browser-based application is deployed to the Web server, it is available to all users without the need for a costly, complex, and error-prone installation process. Browser-based applications are accessible from any platform with a modern Web browser, whether the operating system is Windows, Unix, Mac OS X, or Linux. As the authors point out in this book, an Ajax application is very similar to the web applications we’re already familiar with. It’s made from many of the same components and operates in the same way and to the same standards. The difference is that it incorporates an "Ajax engine" that negates the start-stop nature of traditional web interaction and drives the whole process along. A quick look at an Ajax application like Google Maps will demonstrate the difference to the user experience very clearly. Gone are the constant page-refreshes and instead the user is presented with a smooth, responsive interface that seamlessly reacts to their requests.
Synopsis
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 user's experience. When we first saw the potential of Ajax, we knew we had to start leveraging it for our own applications. Along the way we've learned some hard-earned knowledge that we thought needed to be shared with the rest of the development community. With this book you'll be able to easily extend your own applications with Ajax and have fun while doing it. We hope that someday we'll be reading about your great Ajax-enabled application!
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3 von 4 Kunden fanden die folgende Rezension hilfreich
Format:Taschenbuch
I needed an AJAX overview and fast introduction to this technology and this book delivered. Even more, it offered not only insides of AJAX but also some help on tools, frameworks and testing. Easy to read, well structured. Good job.
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73 von 77 Kunden fanden die folgende Rezension hilfreich
Taking JavaScript Seriously
14. Oktober 2005
Format:Taschenbuch
Ajax is an unusual beast. It's not a product. It's not a standard. It's not a tool. It's not proprietary. And it's not a proper noun -- it's an acronym (although it's usually spelled as if it were a proper noun). Instead, Ajax is a collection of techniques for building highly interactive Web based applications using industrial-strength JavaScript and asynchronous communications, and it's taking the Web development world by storm. This is one of the first books to appear on this very hot topic, and I have to say it's a very good one.
"Foundations of Ajax" takes you through the whys and wherefores of Ajax, as well as the meat and potatoes, at a brisk pace. The examples are crystal clear. One difficulty in describing Ajax applications is that they're inherently multi-language -- part is always JavaScript, and the rest is always written in a server-side language of your choice. Choosing a particular server language might have alienated some readers unfamiliar with it. This book neatly sidesteps the problem by using fixed XML files for the server component for most examples, which leads to startlingly simple descriptions.
As someone who has already learned the basics of Ajax, however, I found the second half of the book even more valuable. The last few chapters talk about tools and techniques for building real-life professional-grade applications. There is excellent, detailed information about documenting, unit testing and debugging for JavaScript, debugging Ajax communications, and using some of the newfangled Ajax frameworks that have begun to appear. These chapters credibly demonstrate that it's possible to treat JavaScript as a Serious Programming Language.
In sum, I think that "Foundations of Ajax" is an excellent piece of work which belongs on every Web developer's bookshelf.
"Foundations of Ajax" takes you through the whys and wherefores of Ajax, as well as the meat and potatoes, at a brisk pace. The examples are crystal clear. One difficulty in describing Ajax applications is that they're inherently multi-language -- part is always JavaScript, and the rest is always written in a server-side language of your choice. Choosing a particular server language might have alienated some readers unfamiliar with it. This book neatly sidesteps the problem by using fixed XML files for the server component for most examples, which leads to startlingly simple descriptions.
As someone who has already learned the basics of Ajax, however, I found the second half of the book even more valuable. The last few chapters talk about tools and techniques for building real-life professional-grade applications. There is excellent, detailed information about documenting, unit testing and debugging for JavaScript, debugging Ajax communications, and using some of the newfangled Ajax frameworks that have begun to appear. These chapters credibly demonstrate that it's possible to treat JavaScript as a Serious Programming Language.
In sum, I think that "Foundations of Ajax" is an excellent piece of work which belongs on every Web developer's bookshelf.
21 von 21 Kunden fanden die folgende Rezension hilfreich
Book for building a foundation on Ajax technology
15. November 2005
Format:Taschenbuch
"Foundations of Ajax" is the first book I've read about the technology, regardless of the astonishing hype it has received lately. It was an easy read, I learned a lot, and, while I was left wanting something more, still, I'd say this is a great book for getting started on Ajax.
The first half of the book runs through a quick history of web technologies and gives a pretty balanced view on the "why" and "why not" of Ajax, explains the fundamental technologies and techniques, and showcases some typical Ajax features like auto-completion, auto-refreshing pages, and a file upload progress bar. While at times the pace of the discussion seemed a bit slow even for myself (not being too familiar with JavaScript in general), I found the fundamentals given on XMLHttpRequest and DOM to be very valuable in terms of understanding what's happening "under the hood" when using those fancy Ajaxian features.
The second half of the book is more focused on tooling. The authors have done a huge favor to the reader by showing how to debug and test JavaScript code, although I had to re-read a page or two of the jsUnit chapter after falling off the sled on how and where the tests are actually executed. The first appendix gets an honorary mention as well, as I found the list of cross-browser compatibility tips to be extremely useful.
The downside to the book, in my opinion, is that while the second appendix does enumerate a long list of Ajax frameworks, only Taconite (the authors' own framework) is presented in any detail. Frankly, I would've wanted to see the authors present even short examples of more "mainstream" frameworks such as Dojo and Prototype. Somewhat related to this, while after reading the book, I feel I have a good foundation for Ajax and would certainly be capable of putting together some fancy Ajax widgets, I'm afraid I wouldn't get as much "done" as I could if the book would've allocated more inches on using state-of-the-art Ajax frameworks. Having said that, I knew that that wasn't a goal for the book so it's not really too big an issue for me.
In summary, a great book for building a foundation on Ajax technology. Get it, read it, hack on some JavaScript, and then go learn the latest and greatest Ajax framework.
The first half of the book runs through a quick history of web technologies and gives a pretty balanced view on the "why" and "why not" of Ajax, explains the fundamental technologies and techniques, and showcases some typical Ajax features like auto-completion, auto-refreshing pages, and a file upload progress bar. While at times the pace of the discussion seemed a bit slow even for myself (not being too familiar with JavaScript in general), I found the fundamentals given on XMLHttpRequest and DOM to be very valuable in terms of understanding what's happening "under the hood" when using those fancy Ajaxian features.
The second half of the book is more focused on tooling. The authors have done a huge favor to the reader by showing how to debug and test JavaScript code, although I had to re-read a page or two of the jsUnit chapter after falling off the sled on how and where the tests are actually executed. The first appendix gets an honorary mention as well, as I found the list of cross-browser compatibility tips to be extremely useful.
The downside to the book, in my opinion, is that while the second appendix does enumerate a long list of Ajax frameworks, only Taconite (the authors' own framework) is presented in any detail. Frankly, I would've wanted to see the authors present even short examples of more "mainstream" frameworks such as Dojo and Prototype. Somewhat related to this, while after reading the book, I feel I have a good foundation for Ajax and would certainly be capable of putting together some fancy Ajax widgets, I'm afraid I wouldn't get as much "done" as I could if the book would've allocated more inches on using state-of-the-art Ajax frameworks. Having said that, I knew that that wasn't a goal for the book so it's not really too big an issue for me.
In summary, a great book for building a foundation on Ajax technology. Get it, read it, hack on some JavaScript, and then go learn the latest and greatest Ajax framework.
43 von 49 Kunden fanden die folgende Rezension hilfreich
friendly enough introduction, but could have been much better
9. Februar 2006
Format:Taschenbuch
This is a rather unambitious book. It's fairly good at what it tries to do, but it doesn't try to do very much. While Manning's Ajax in Action tackles the subject from the standpoint of engineering desktop-replacement applications, Foundations is content to talk about Ajax as a means of adding small-scale usability enhancements to a web application you're already building. Likewise, they assume you already know all you need to know about whatever HTML and about web development platform you're using, and just need to sprinkle some Ajaxy goodness on your site.
Of course, there's nothing wrong with that. And I have little doubt that there are a lot more people looking to use Ajax to spruce up an existing site or application than looking to build major web-based applications. And lots of those people will already know other aspects of web development and not need a rehash. For these sorts of developers, books like this one will fill an important niche. And Foundations has a lot to recommend it. It's well written and edited, and it has a friendly learning curve. It covers building a toolset for working effectively with JavaScript, like JavaDoc, JsUnit, GreaseMonkey, and Venkman.
The main way in which this book shoots too low is by providing its straightforward examples only for Java on the server side. For a book that clocks in a thin 273 pages, it surely would have been easy to take the 50 pages of Java examples in chapter 4 and provide parallel chapters that implement the same examples in, say, PHP and ASP.Net. If the authors had merely done that, I would have absolutely no hesitation in recommending this book to Ajax newcomers. As it is, I can't help thinking that this book should be called Foundations of Ajax in JavaScript and Java. And since only the simplest of examples (the ones without any server-side interaction) will work on other platforms, this book will be completely useless to a large portion of its target audience. What a shame.
Of course, there's nothing wrong with that. And I have little doubt that there are a lot more people looking to use Ajax to spruce up an existing site or application than looking to build major web-based applications. And lots of those people will already know other aspects of web development and not need a rehash. For these sorts of developers, books like this one will fill an important niche. And Foundations has a lot to recommend it. It's well written and edited, and it has a friendly learning curve. It covers building a toolset for working effectively with JavaScript, like JavaDoc, JsUnit, GreaseMonkey, and Venkman.
The main way in which this book shoots too low is by providing its straightforward examples only for Java on the server side. For a book that clocks in a thin 273 pages, it surely would have been easy to take the 50 pages of Java examples in chapter 4 and provide parallel chapters that implement the same examples in, say, PHP and ASP.Net. If the authors had merely done that, I would have absolutely no hesitation in recommending this book to Ajax newcomers. As it is, I can't help thinking that this book should be called Foundations of Ajax in JavaScript and Java. And since only the simplest of examples (the ones without any server-side interaction) will work on other platforms, this book will be completely useless to a large portion of its target audience. What a shame.
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