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JavaScript: The Definite Guide: The Definitive Guide (Definitive Guides) (Englisch) Taschenbuch – 3. Dezember 2001

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Mehr über den Autor

David Flanagan ist Programmierer, verbringt aber die meiste Zeit damit, über JavaScript und Java zu schreiben. David Flanagan hat einen Abschluss in Informatik und Ingenieurwissenschaft vom Massachusetts Institute of Technology. Er lebt mit seiner Frau und seinen Kindern im Nordwesten der USA in der Nähe der Grenze zu Kanada, zwischen den Städten Seattle, Washington und Vancouver, British Columbia. Davids Blog ist unter www.davidflanagan.com zu finden.

Produktbeschreibungen

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Since the earliest days of Internet scripting, Web developers have considered JavaScript: The Definitive Guide an essential resource. David Flanagan's approach, which combines tutorials and examples with easy-to-use syntax guides and object references, suits the typical programmer's requirements nicely. The brand-new fourth edition of Flanagan's "Rhino Book" includes coverage of JavaScript 1.5, JScript 5.5, ECMAScript 3, and the Document Object Model (DOM) Level 2 standard from the World Wide Web Consortium (W3C). Interestingly, the author has shifted away from specifying--as he did in earlier editions--what browsers support each bit of the language. Rather than say Netscape 3.0 supports the Image object while Internet Explorer 3.0 does not, he specifies that JavaScript 1.1 and JScript 3.0 support Image. More usefully, he specifies the contents of independent standards like ECMAScript, which encourages scripters to write applications for these standards and browser vendors to support them. As Flanagan says, JavaScript and its related subjects are very complex in their pure forms. It's impossible to keep track of the differences among half a dozen vendors' generally similar implementations. Nonetheless, a lot of examples make reference to specific browsers' capabilities.

Though he does not cover server-side APIs, Flanagan has chosen to separate coverage of core JavaScript (all the keywords, general syntax, and utility objects like Array) from coverage of client-side JavaScript (which includes objects, like History and Event, that have to do with Web browsers and users' interactions with them. This approach makes this book useful to people using JavaScript for applications other than Web pages. By the way, the other classic JavaScript text--Danny Goodman's JavaScript Bible--isn't as current as this book, but it's still a fantastic (and perhaps somewhat more novice-friendly) guide to the JavaScript language and its capabilities. --David Wall

Topics covered: The JavaScript language (version 1.0 through version 1.5) and its relatives, JScript and ECMAScript, as well as the W3C DOM standards they're often used to manipulate. Tutorial sections show how to program in JavaScript, while reference sections summarize syntax and options while providing copious code examples.

Pressestimmen

"JavaScript is not a cookbook, although plenty of example code is include; nor is it an introduction for beginners, although every aspect of JavaScript is covered from the ground up. It is - what it sets out to be - definitive reference guide for the JavaScript programmer." - Richard Drummond, LinuxFormat, June 2002

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Von Ein Kunde am 11. November 2002
Format: Taschenbuch
Dies ist wirklich der "definitive guide", als der es betitelt ist. Hier steht ALLES über JavaScript und Umfeld drin, was man als ernsthafter Entwickler wissen muss. Vielleicht kein Buch für Anfänger, aber das soll es ja auch nicht sein.
Gut strukturiert, gut beschrieben, gut erklärt, alles bedacht, nichts wird vergessen.
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Format: Taschenbuch Verifizierter Kauf
There're two Perl book in this world: the Camel books. And there's one JavaScript book: Flanagan's book.
Revision 3 covered JavaScript 1.3 as a scription language, the new revision covers: JavaScript, DOM, CSS... In case you don't need FAQ like examples but facts and you're looking for a deeper understanding of JavaScript as a language just go for this book.
Kommentar 2 von 3 haben dies hilfreich gefunden. War diese Rezension für Sie hilfreich? Ja Nein Feedback senden...
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Die hilfreichsten Kundenrezensionen auf Amazon.com (beta)

Amazon.com: HASH(0x9377a864) von 5 Sternen 64 Rezensionen
22 von 22 Kunden fanden die folgende Rezension hilfreich
HASH(0x9bdc7be8) von 5 Sternen Another great one from Flanagan 10. September 2004
Von wiredweird - Veröffentlicht auf Amazon.com
Format: Taschenbuch
If you're already an experienced programmer, it can be frustrating trying to find a good book on JavaScript (aka JScript, aka ECMAScript, aka ECMA-262). A lot of books out there are aimed at HTML developers, maybe even graphic designers. Many such users have little or no real programming experience, and maybe no real interest. Books for that audience are user-friendly, filled with useful examples, and low on scary-sounding technical terms. In other words, almost useless.

Flanagan has good credentials as a technical writer, and as a highly technical writer. He really knows what software engineers look for - trust me, it's not what a graphic designer looks for.

This starts with a clear, methodical description of the language. Flanagan goes through all the language basics, pointing out where JavaScript differs form languages like Java, C#, or C++. The differences are numerous. For example, JavaScript has typed data, but not typed variables. It's object oriented, but doesn't have classes. It's an interpreted language, not compiled, and that opens up generative programming possibilities that reflection APIs can't approach.

After the language itself, Flanagan presents it in the client-side HTML context, where it appears most often. That's about 20% of the book. It goes over all the common HTML features, and shows how JavaScript can add dynamics or configurability to most HTML features. The last part of this section discusses XML and the DOM model. It does not yet discuss the E4X standard, ECMAScript for XML, the new ECMA-357 standard. As of this writing, the standard has only been out for three months, though. I'm sure Flanagan will catch up to it soon.

The book's remaining three sections cover the language's basic APIs, the APIs needed in the client-side HTML context, and the DOM model. The first two are fundamental to any non-trivial use of the language, the last is the programming model that gives access to XML or XHTML in a rational, predictable way.

JavaScript has a number of very different user communities, with different needs when it comes to language documentation. This isn't a cut&paster's book, and is nothing at all like a training guide. It's a reference manual. If you're a serious techie, then this is the book for you.

//wiredweird
20 von 20 Kunden fanden die folgende Rezension hilfreich
HASH(0x9bdd29cc) von 5 Sternen Buy V4, but don't throw away V3. 9. Januar 2002
Von Scott Shattuck - Veröffentlicht auf Amazon.com
Format: Taschenbuch
Having recently shipped an open source JavaScript application framework comprising 125,000 lines of JavaScript (TIBET) I can say it would have been impossible without Version 3 of this book -- and impossible with only Version 4 of this book.
Where Version 3 focused on documenting the *reality* of the browsers, covering the various bugs and inconsistencies in detail, Version 4 abandons that approach in favor of documenting the *dream* embodied in the standards. While that's "a good thing", what's really needed, and what was provided by Version 3, is a volume that also covers how the browers vary from the standards. That's what made V3 the best JavaScript book on the market. Much of that content has been removed from V4 however.
V4 is a solid effort. Don't get me wrong. You should have a copy. The coverage is for the most part accurate and accessible. The new content on Mozilla and the DOM/CSS standards is solid. But the missing material means you can't toss all your other JS books and just settle down with JSTDG V4 :(.
With V3 you rarely needed to go anywhere else. With V4 I find myself looking back at V3 to check accuracy or going to the net to search for bug reports. The book just isn't as functional in the real world of web development. So buy V4, but don't get rid of that well-used copy of V3 just yet ;).
ss
33 von 37 Kunden fanden die folgende Rezension hilfreich
HASH(0x9bdd8294) von 5 Sternen Good book but 4th edition starting to become out-dated 21. Februar 2006
Von J. R. Collins - Veröffentlicht auf Amazon.com
Format: Taschenbuch
I have had this book for years. I really like this book a lot.

It teaches you the language. It is a good reference for the syntax of Javascript 1.5. It also does a decent job of teaching DHTML. Some foreknowledge of HTML is going to be helpful. That can easily be gained from other books, reading the spec, or going through some of the HTML tutorials on the web. This book tells you how to access the structure of an HTML document - and change it.

Amazingly, it really did not start to become obsolete for almost half a decade. For a computer book on a heavily used computer language, that is great.

In late 2005, Mozilla released Firefox 1.5 which included a new version of Javascript: Javascript 1.6. Unlike some updates, this one was a doozy.

Javascript 1.6 introduced a feature called E4X - Ecmascript for Java. This powerful feature actually upgrades the language, making XML fragments a first class data type.

What this means is two things:

First, you can put XML fragments in your program. Just as quoted strings are interpreted as string literals, these fragments are treated as XML literals. No quoting or anything is required: the parser just sees them and knows what they are.

Second, you can evaluate XPath-like expressions to find things in an XML fragment value. Those things would be attribute values, text content, and elements that are in it.

Today, XML is much more important to organizations and much more useful to programmers than it was in 2001. It is a given that easier, more powerful ways for programmers to work with XML are going to grab programmers' interest.

Another thing has changed since 2001. AJAX programming has become white-hot. Website users like it because the system seems more responsive. Programmers like it because it lets them create web sites that seem more fun and are more impressive to a generation numbed-out by constant fill-in-form/Submit cycle of web pages. Companies like it because it AJAX is "in" and having it on their site can draw people to it by word of mouth or as marketable feature.

AJAX programming relies on the XMLHttpRequest object. That is not described in this book. Consequently AJAX programming is not explained in it.

A lot of AJAX components & effects libraries; e.g. Prototype.js, scriptaculous (script.aculo.us if you are looking for it on the web), etc., were in high gear by 2005. Since the book came out years before that, it does not mention any of these, tell what they can do, or explain how to write programs that use them.

Two other standards got added to Firefox 1.5 when it was released in 2005: SVG content and the CANVAS element. While CANVAS is a new invention, it is already supported by Apple's Safari 2 web browser that came with Tiger, released in early 2005. SVG is a very mature standard, invented in the late 1990s - but not really included in a widely distributed piece of software until Firefox included it. From watching what is going on in Apple's Safari development site, it seems likely Safari will gain SVG support sometime in 2006.

These 2 graphics capabilities are both important.

The CANVAS element is perfect for realtime and/or interactive graphics. For instance, it would be great for a "paint" program or a constantly-updated graph/chart display.

The SVG content is XML. The elements describe how to draw some shapes and text, fill them in, draw the borders, and perform transformations on them - as well as fancy effects like "shear". The power of SVG is huge. It can be used to draw all of the things described, plus more advanced things like "quadratic bezier curves". This makes it also suited to render art objects or sophisticated two-dimensional visualizations.

Now, go back to what is in the 4th edition of the book. The coverage of the different types of objects is covered in different sections - based on what the objects are used for. This is fine, but then there needs to be a special alphabetized index as well as detailed table of contents that shows you where to find each one - and what is in each section. Reading the whole book is not an option when you are in a hurry. When you are doing stuff on the web, you are always in a hurry. So, ways to find things quickly and survey quickly what is there - that is crucial.

I think a 5th edition of this book could be phenomenal, if it takes care of the omissions I have cited. Even in its present form, it does a good job of teaching the language - with the exception of the missing items I have noted.
23 von 25 Kunden fanden die folgende Rezension hilfreich
HASH(0x9bdcb180) von 5 Sternen Worth its weight in gold 27. Februar 2002
Von James W. Anderson - Veröffentlicht auf Amazon.com
Format: Taschenbuch
I own the third edition of this book, and bought it when I was starting to write a web-based decision support system for a very large beverage company. I can safely say that this book, and the HTML Definitive Guide (also by O'Reilly) were critical to the success of the system.
I have seldom had a question about JavaScript for which I could not find the answer in this book. I referred to it so frequently during the development of our system that it is now the most dog-eared book in my collection. I'm going to order the fourth edition simply because this baby is ready for retirement.
If you are learning client-side JavaScript, by all means purchase this book. The first half of the book is a guided introduction to the language and does a wonderful job of explaining the syntax of the language, the underlying object model, and virtually every pertinent feature of the language. The real value, though, is in the reference, which documents every object, method, property and event of standard JavaScript.
Non-conformists who wish to exploit features unique to Internet Explorer will find some reference material here, but the book does try to focus on the "standard" features of the language, which I think is a good thing.
You just can't go wrong with this book.
18 von 19 Kunden fanden die folgende Rezension hilfreich
HASH(0x9bdc1bf4) von 5 Sternen Definitely a Definitive Guide - But Is That What You Want? 28. August 2003
Von Warren J. Dew - Veröffentlicht auf Amazon.com
Format: Taschenbuch Verifizierter Kauf
If you're looking for a complete reference on the JavaScript programming language, this is it. This book teaches the JavaScript language from the ground up and includes a very complete reference section.
On the other hand, if all you want is to write or understand JavaScript in its most common use - providing a little more dynamic content in web pages than can be done with html alone - the book may be overkill. For example, in addition to the useful sections on client side JavaScript - the JavaScript that you include in your web pages to be run in the client's browser - there are even larger sections that are really only useful for server side JavaScript - as if anyone uses JavaScript on the server side. As an experienced C, C++, and Java programmer, I had to wade through quite a bit of redundant material before I could effectively use the book to answer the simple questions I had.
In addition, some critical issues about using client side JavaScript are omitted from the book. For example, there is a chapter on security, but it only covers security issues applicable to the user - that with modern browsers, it's pretty safe for the user to allow JavaScripts to run. Issues pertaining to the security of the web site and the server it runs on - far more important to someone writing JavaScript code - are omitted. The book even provides a very unsafe example of allowing a client side script to calculate sales tax, which if used would make it easy for someone to tell your site he owed less tax than he really did, leaving the website owner holding the bag. It would have been better to include these server security issues and omit the client security issues.
Still, this book will let you find the answers to your questions, even if it does take longer than it seems like it should.
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