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Async JavaScript: Build More Responsive Apps with Less Code par [Burnham, Trevor]
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Descriptions du produit

Présentation de l'éditeur

With the advent of HTML5, front-end MVC, and Node.js, JavaScript is ubiquitous--and still messy. This book will give you a solid foundation for managing async tasks without losing your sanity in a tangle of callbacks. It's a fast-paced guide to the most essential techniques for dealing with async behavior, including PubSub, evented models, and Promises. With these tricks up your sleeve, you'll be better prepared to manage the complexity of large web apps and deliver responsive code.

With Async JavaScript, you'll develop a deeper understanding of the JavaScript language. You'll start with a ground-up primer on the JavaScript event model--key to avoiding many of the most common mistakes JavaScripters make. From there you'll see tools and design patterns for turning that conceptual understanding into practical code.

The concepts in the book are illustrated with runnable examples drawn from both the browser and the Node.js server framework, incorporating complementary libraries including jQuery, Backbone.js, and Async.js. You'll learn how to create dynamic web pages and highly concurrent servers by mastering the art of distributing events to where they need to be handled, rather than nesting callbacks within callbacks within callbacks.

Async JavaScript will get you up and running with real web development quickly. By the time you've finished the Promises chapter, you'll be parallelizing Ajax requests or running animations in sequence. By the end of the book, you'll even know how to leverage Web Workers and AMD for JavaScript applications with cutting-edge performance. Most importantly, you'll have the knowledge you need to write async code with confidence.

What You Need:

Basic knowledge of JavaScript is recommended. If you feel that you're not up to speed, see the "Resources for Learning JavaScript" section in the preface.

Détails sur le produit

  • Format : Format Kindle
  • Taille du fichier : 229 KB
  • Nombre de pages de l'édition imprimée : 104 pages
  • Utilisation simultanée de l'appareil : Illimité
  • Editeur : Pragmatic Bookshelf; Édition : 1 (28 novembre 2012)
  • Vendu par : Amazon Media EU S.à r.l.
  • Langue : Anglais
  • Synthèse vocale : Activée
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  • Composition améliorée: Non activé
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  • Classement des meilleures ventes d'Amazon: n°248.138 dans la Boutique Kindle (Voir le Top 100 dans la Boutique Kindle)
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Commentaires client les plus utiles sur (beta) 4.5 étoiles sur 5 26 commentaires
13 internautes sur 14 ont trouvé ce commentaire utile 
5.0 étoiles sur 5 best CS book I've read this year 29 octobre 2012
Par R. Mark Volkmann - Publié sur
Achat vérifié
This is the book all JavaScript developers should read right after they read "JavaScript: The Good Parts" and get a little experience writing JavaScript code. It is a very well-written book and very insightful!

As for the reviewer that gave this one star and complained that you will not learn Ajax or JavaScript from this book, that is true. However, that's not the point of this book. We have to have some books that are not for absolute beginners and this is one of them. So get some experience with JavaScript first and then read this book.
5 internautes sur 5 ont trouvé ce commentaire utile 
5.0 étoiles sur 5 Highly recommended 19 août 2012
Par Darrin - Publié sur
Format: Format Kindle Achat vérifié
JavaScript is not my primary development language at work so I've been at the intermediate level for a few years. I had a solid understanding of how to use jQuery but hadn't taken advantage of deferreds. This book has helped me move to the next level as a JavaScript developer. The chapter on promises/deferreds is worth the price of the book alone. The author's writing style is excellent - clear and to the point. If you want to move beyond basic jQuery usage and fully leverage the async aspects of the language this is the book to get. The examples are good and a few have links to jsFiddles with the examples ready to run.
7 internautes sur 8 ont trouvé ce commentaire utile 
5.0 étoiles sur 5 Great book about a specific topic. 23 juin 2013
Par Kevin Golding - Publié sur
Format: Format Kindle Achat vérifié
First and foremost, I just want to point out that Ed Z (the 'one star' guy) completely misses the point about this book.

It is not "Javascript for dummies"
nor is it "Teach yourself Javascript in x units of time"
nor is it "Javascript the definitive reference"
nor is it "1000 pages of boilerplate javascript you can mindlessly copy and paste to make generic cookie-cutter javascript webpages".

It deals with one specific topic that is a requirement for moving beyond simple javascript programming to using javascript in more of a systems programming type of application.

The clue is the word 'Async' in the title. The fact is that asynchronous operations are hard, in any language, on any platform, and they require a thorough understanding of the underlying technology in order to get right. You are expected to already know javascript pretty well. And you are probably expected to already know about concepts like signals, multi-threading, interrupts and call-backs from developing in other environments. And yes, you have to actually think about the example code presented rather than having it spelt out line by line. I guess that's to make sure that you actually understand what's going on by yourself rather than simply 'following the bouncing ball'.

I'm still pretty new to Javascript, and I'm reading this book in conjuction with some other javascript books (the rhino book and an ajax book). Whilst much of what I have read in this book is still going over my head, but there have already been quite a few 'a-ha' moments that helped me to understand some of the things the other books kind of swept under the carpet.

I appreciate the authors descriptive conversational style which helps to present a complicated topic in a fairly straight forward way, and helps to understand the 'why' and not just the 'what'.

Is it a short book? Well I guess it is (I bought the ebook so I have no concept of physical dimensions), but the fact that it addresses one specific topic in such a succinct way is a good thing and not a reason to write it off as a 'pamphlet'.
3 internautes sur 3 ont trouvé ce commentaire utile 
5.0 étoiles sur 5 Essential reading for any JavaScript developer 30 mars 2012
Par peterd - Publié sur
Format: Format Kindle Achat vérifié
I finished reading this on my Kindle the other day, and I have to say this is one of the best technical books I've read in a long time.
The writing style and examples were all top-notch and I was extremely impressed. I'm looking forward to reading Trevor's CoffeeScript book next if it is anything like this book.
If you are a serious JavaScript/Node.js developer and deal with async data regularly (or irregularly), you owe it to yourself to grab a copy of this book and give it a read. It covers plain JavaScript as well as several jQuery and Node.js examples (as well as some Backbone.js content), so it has a little of something for everybody. Thanks to this book I was able to rebuild a simple app I was working on which is now able to validate ~360 JavaScript files using JSHint in around 3 seconds using the async.js library and an asynchronous queue with 8 concurrent worker threads (which is a lot more efficient than my previous solution).
5 stars!
3 internautes sur 3 ont trouvé ce commentaire utile 
5.0 étoiles sur 5 This goes to 11! 11 avril 2013
Par Curtis Z - Publié sur
Achat vérifié
This book is on the thin side (75+ pages). However, none of this book is wasted on selling the language itself. Very, very little of the book is wasted on describing the use of frameworks. The author does not take a clever detour around writing and handling async in Javascript by showing you another person's product. You wanted Javascript, you get Javascript. He gets right to the point at the beginning and redlines it throughout without slowing down. Continuing the racing metaphor, he handles the curves in the road like a pro, teaching the most effective ways to approach the problems without dumbing down the product to accomodate total beginners. This book is worth every penny and then some (though I'm not sure why some seller has priced it at nine hundred dollars -- that's retarded and Amazon needs to work on solving this problem).
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