October 2019
Intermediate to advanced
1200 pages
31h 31m
English
Content preview from Professional JavaScript for Web Developers, 4th Edition
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11Promises and Async Functions
WHAT'S IN THIS CHAPTER?
- Introduction to Asynchronous Programming
- Promises
- Async Functions
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Please note that all the code examples for this chapter are available as a part of this chapter's code download on the book's website at www.wrox.com/go/projavascript4e on the Download Code tab.
In ECMAScript editions beginning with ES6, support and tooling for asynchronous behavior has undergone a renaissance. ECMAScript 6 introduces a formal Promise reference type, allowing for elegant definition and organization of asynchronous behavior. Later editions also extended the language to support asynchronous functions with the async and await keywords.
INTRODUCTION TO ASYNCHRONOUS PROGRAMMING
The duality between synchronous and asynchronous ...
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