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JavaScript with Promises 1st Edition

4 customer reviews
ISBN-13: 978-1449373214
ISBN-10: 1449373216
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Editorial Reviews

Book Description

Managing Asynchronous Code

About the Author

Daniel Parker is a software developer focused on web and mobile applications. He writes JavaScript for Evernote in Austin, Texas and is the organizer of the Austin Google Developer Group.

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Product Details

  • Paperback: 94 pages
  • Publisher: O'Reilly Media; 1 edition (June 19, 2015)
  • Language: English
  • ISBN-10: 1449373216
  • ISBN-13: 978-1449373214
  • Product Dimensions: 7 x 0.2 x 9.2 inches
  • Shipping Weight: 6.4 ounces (View shipping rates and policies)
  • Average Customer Review: 5.0 out of 5 stars  See all reviews (4 customer reviews)
  • Amazon Best Sellers Rank: #87,307 in Books (See Top 100 in Books)

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5 of 5 people found the following review helpful By Jim Fathman on July 4, 2015
Format: Paperback
JavaScript is evolving so we can write asynchronous programs that look more like synchronous programs. Promises and generators have arrived with ES6, and async and await keywords are coming in ES7. It will take time for JavaScript idiom to coalesce around promises, and more time for essential libraries to adapt or be replaced by modern alternatives. During these changes, we will need several books to help us understand and properly apply these new JavaScript language features.

This book about JavaScript promises is more booklet than book, but it is very worthwhile. It is terse and exacting. If you already know JavaScript and you want to learn about promises (and generators, and iterators), you can read this book and try the exercises in a couple of sittings and come away with a good appreciation for what promises adds to JavaScript.

I have wondered whether the Bluebird promise library will retain purpose after ES6 is widely deployed. This book bases several examples on Bluebird, and the answer seems to be that Bluebird provides useful extended features that will continue to make it a valid choice above and beyond the basic promise features now found in JavaScript itself.

We need more books on promises to augment this book. In particular, I would like to spend time in a book with exercises and examples that build on basic concepts and explore when and how to use Bluebird for Node.js server side programming. But as a general introduction to promises that will help us get started, I highly recommend this book.
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The book offers an in-depth analysis of the JavaScript event loop before delving into the realms of async programming, which should serve as a great introduction for beginners and a good refresher for advanced JavaScript programmers. Daniel also does an amazing job discussing recommended design patterns: The book also has an entire chapter dedicated to explaining parallel, series, waterfall, and more async control flows with easy-to-follow examples, that can be used as reference material in the future. The book also covers the most important parts of Bluebird and jQuery Promises, explaining the nuances with the mark of a person with thorough knowledge on the topic. The book definitely will give you a solid foundation on Promises and async JavaScript. All of this in less than about 100 pages! The book is packed with info and is a must-read. Highly recommend.
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By Angel B on August 10, 2015
Format: Paperback Verified Purchase
Very insightful. Covers all the most common uses, and goes into enough depth of Javascript's event looping engine to give those (like me) without previous experience with asynchronous programming a good educational foundation to work with. Im also really happy that they cover some of Bluebird's API!
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By Jerome Covington on August 17, 2015
Format: Kindle Edition Verified Purchase
Explains clearly the "why" and not just the "how". A first rate guide to using Promises.
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