JavaScript with Promises : Managing Asynchronous Code

Daniel Parker

ISBN 10: 1449373216 / ISBN 13: 9781449373214

Published by O'reilly Media Jul 2015, 2015

About this Item

Neuware - If you're a developer moving to an environments that make heavy use of asynchronous APIs, such as Node, WinRT, or Chrome packaged apps, this book teaches you how to make use of promise constructs. JavaScript routinely supports asynchronous code, calling a function with no expectation of when a response might come back. Unfortunately, writing code in that style is difficult for humans, and promises are a key tool for bridging that gap. This book shows you how to use these tools, and also demonstrates techniques that enable you to use features like IndexedDB or WebRTC.

Seller Inventory # 9781449373214

Bibliographic Details

• Title: JavaScript with Promises : Managing Asynchronous Code
• Publisher: O'reilly Media Jul 2015
• Publication Date: 2015
• Language: English
• ISBN 10: 1449373216
• ISBN 13: 9781449373214
• Binding: Taschenbuch
• Condition: Neu

About this title

Synopsis

Asynchronous JavaScript is everywhere, whether you’re using Ajax, AngularJS, Node.js, or WebRTC. This practical guide shows intermediate to advanced JavaScript developers how Promises can help you manage asynchronous code effectively—including the inevitable flood of callbacks as your codebase grows. You’ll learn the inner workings of Promises and ways to avoid difficulties and missteps when using them.

The ability to asynchronously fetch data and load scripts in the browser broadens the capabilities of JavaScript applications. But if you don’t understand how the async part works, you’ll wind up with unpredictable code that’s difficult to maintain. This book is ideal whether you’re new to Promises or want to expand your knowledge of this technology.

• Understand how async JavaScript works by delving into callbacks, the event loop, and threading
• Learn how Promises organize callbacks into discrete steps that are easier to read and maintain
• Examine scenarios you’ll encounter and techniques you can use when writing real-world applications
• Use features in the Bluebird library and jQuery to work with Promises
• Learn how the Promise API handles asynchronous errors
• Explore ECMAScript 6 language features that simplify Promise-related 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.