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Rami Sarieddine [Sarieddine - JavaScript Promises Essentials

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Rami Sarieddine [Sarieddine JavaScript Promises Essentials

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Build fully functional web applications using promises, the new standard in JavaScript

About This Book
  • Integrate JavaScript Promises into your application by mastering the key concepts of the Promises API
  • Replace complex nested callbacks in JavaScript with the more intuitive chained Promises
  • Acquire the knowledge needed to start working with JavaScript Promises immediately
Who This Book Is For

If you are a JavaScript developer working with asynchronous operations and want to know more about promises, then this book is ideal for you. Having a detailed explanation of JavaScript promises will be perfect as your next step towards adopting this new standard and using the API in your web and JavaScript applications.

What You Will Learn
  • Implement asynchronous programming in JavaScript

  • Get acquainted with the JavaScript Promises API

  • Choose the right JavaScript libraries to use callbacks in a non-compatible platform

  • Write chained asynchronous operations that are easy to manage

  • Master WinJS Promises for developing Windows applications

  • Differentiate between various implementations of promises in JavaScript

  • Put promises into action in your applications

  • Catch and handle errors effectively in asynchronous operations

  • Explore browser support and platform compatibility for JavaScript promises

In Detail

Promises are a new programming paradigm in JavaScript that allow developers to request data that they dont have yet and deal with it at a non-determined point in the future (asynchronously). Starting with the basics of the promise objects, well be able to leverage the maximum capabilities of promises when writing applications.

This book starts by giving you some background information on the asynchronous programming model in JavaScript, recognizing its importance in JavaScript programming. It then walks you through the key concepts and intricacies of the Promises API. Following that, you will learn how you can write complex asynchronous operations with chained promises and be able to catch and handle exceptions. With this book, youll learn how to write better asynchronous operations using JavaScript promises.

**

About the Author

Rami Sarieddine

Rami Sarieddine is a passionate technology evangelist and a subject matter expert in web development, Windows apps, and Microsoft Azure. He is currently working as a Technical Evangelist with Microsoft. This is his second publication, following his first book Developing Windows Store Apps with HTML5 and JavaScript, Packt Publishing (https://www.packtpub.com/application-development/developing-windowsstore-apps-html5-and-javascript#). He has more than 8 years of experience in programming for the Web. He was awarded the Microsoft Most Valuable Professional status twice, in 2012 and 2013, for his contributions to the technical communities of ASP.NET/IIS and Visual C#. He has featured as a regular speaker at key technical events for Microsoft Lebanon, including Open Door and TechDays. He has delivered hundreds of training sessions on HTML5, JavaScript, Azure, and Visual Studio. When not working, Rami enjoys running and spending time with his loved ones. And when on vacation, he enjoys traveling and visiting new places around the world. He can be reached via his e-mail ID, r.sarieddine@live.com. You can follow his tweets as well; his Twitter handle is @ramiesays. You can also find his blog posts on http://code4word.com.

Rami Sarieddine [Sarieddine: author's other books


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JavaScript Promises Essentials

Table of Contents
JavaScript Promises Essentials

JavaScript Promises Essentials

Copyright 2014 Packt Publishing

All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.

First published: September 2014

Production reference: 1190914

Published by Packt Publishing Ltd.

Livery Place

35 Livery Street

Birmingham B3 2PB, UK.

ISBN 978-1-78398-564-7

www.packtpub.com

Credits

Author

Rami Sarieddine

Reviewers

Chris Latko

Jan Oetjen

Rajeesh C V

Commissioning Editor

Edward Gordon

Acquisition Editor

Owen Roberts

Content Development Editor

Akshay Nair

Technical Editor

Edwin Moses

Copy Editors

Sarang Chari

Gladson Monteiro

Adithi Shetty

Project Coordinator

Swati Kumari

Proofreaders

Stephen Copestake

Paul Hindle

Indexers

Hemangini Bari

Mariammal Chettiyar

Monica Ajmera Mehta

Graphics

Abhinash Sahu

Production Coordinator

Nilesh R. Mohite

Cover Work

Nilesh R. Mohite

About the Author

Rami Sarieddine is a passionate technology evangelist and a subject matter expert in web development, Windows apps, and Microsoft Azure. He is currently working as a Technical Evangelist with Microsoft. This is his second publication, following his first book Developing Windows Store Apps with HTML5 and JavaScript , Packt Publishing (https://www.packtpub.com/application-development/developing-windows-store-apps-html5-and-javascript#).

He has more than 8 years of experience in programming for the Web. He was awarded the Microsoft Most Valuable Professional status twice, in 2012 and 2013, for his contributions to the technical communities of ASP.NET/IIS and Visual C#. He has featured as a regular speaker at key technical events for Microsoft Lebanon, including Open Door and TechDays. He has delivered hundreds of training sessions on HTML5, JavaScript, Azure, and Visual Studio.

When not working, Rami enjoys running and spending time with his loved ones. And when on vacation, he enjoys traveling and visiting new places around the world.

He can be reached via his e-mail ID, <.

Acknowledgments

Apart from the hard work put into researching and writing, the realization of this book would not have been possible without my publisher, Packt Publishing, and the efforts of their Acquisition Editor and the team of reviewers who helped me complete the book. I would like to thank Owen Roberts (Acquisition Editor) and Akshay Nair (Content Development Editor) for their involvement and guidance.

Moreover, I wish to acknowledge Brian Cavalier, co-editor and contributor to the concepts and content of Promises/A+, who has given generous support and provided me with key information in this regard. I would also like to take this opportunity to thank my family, who always encourage me in such endeavors.

Above all, I want to express my sincerest appreciation and gratitude to my loved one, Elissar Mezher, for always motivating me and pushing me forward. Her relentless support and follow-up on my progress while writing this book were essential, in addition to bearing with me on those long days and nights at work.

Thank you.

About the Reviewers

Chris Latko graduated with honors from Indiana University with a double major in Business Economics and Japanese Language and Literature. In 1994, he developed his first website and has since acquired 20 years' experience in web development, a major part of which has been his participation in the development and deployment of over 200 websites that required his contribution in virtually all areas of the production process, including management, programming, design, and system administration. Other keynotes in his career include working for Fortune Global 500 companies (Disney and Sony) and several start-ups (PropertyMaps, WTIC, Brand Ichiba, and so on).

He is currently a Lead API Engineer at Boxfish, a company blazing new paths in capturing and understanding TV content and audiences.

I would like to thank my extremely supportive wife, Tomoko, and my wonderful daughter, Luna, for allowing me the late nights and technical conversations.

Jan Oetjen has been an all-round software developer from Germany since 1995. In the past, he has used languages such as Java, JavaScript, Ruby, Python, C, and C# on several frontends and backends. He currently works as a backend developer for Web Solutions.

Jan can be reached at <>.

Rajeesh C V is a developer who has been writing code for a living, and fun, for more than a decade. He has hands-on experience in Microsoft technologies, such as C#, ASP.Net MVC, SQL Server, and XAML. A few years back, he fell in love with JavaScript, and thereafter, found time to learn more about it. Now, he is not afraid of JavaScript and recently built a large single-page application using Ember.js for a big corporation. In his free time, he writes for his blog at http://rajeeshcv.com/. He lives in Kerala, India, with his beautiful wife, Manjusha.

Currently, he is working in IdentityMine as a Technical Team Lead and is building applications for Windows 8, Windows Phone, and Xbox platforms.

You can follow him on Twitter; his handle is @cvrajeesh.

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