This book explores the newest features of JavaScript, along with who manages the process of improving JavaScript, how new features get introduced, terminology, and a high-level overview of new features. Author T.J. Crowder then looks at each new or updated item in depth, with example uses, possible pitfalls, and recommendations for updating old habits in light of new features. The book is non-platform specific, aimed at programmers working in web development, Node.js, Electron, Windows Universal Apps, or another JavaScript environment.

Author: T.J. Crowder
Publisher: Wrox
Date: July 2020
Pages: 260
ISBN: 978-1119367956
Print: 1119367956
Kindle: B08C9PH74Z
Audience: JavaScript developers
Level: Introductory/Intermediate
Category: JavaScript

• Covers all the additions to JavaScript in ES2015-ES2019 plus a preview of ES2020 (and beyond)
• Explores the latest syntax: nullish coalescing, optional chaining, let and const, class syntax, private methods, private fields, new.target, numeric separators, BigInt, destructuring, default parameters, arrow functions, async functions, await, generator functions, ... (rest and spread), template literals, binary and octal literals, ** (exponentiation), computed property/method names, for-of, for-await-of, shorthand properties, and others
• Details the new features and patterns including modules, promises, iteration, generators, Symbol, Proxy, reflection, typed arrays, Atomics, shared memory, WeakMap, WeakSet, and more
• Highlights common pitfalls and explains how to avoid them
• Shows how to follow the improvements process and even participate in the process yourself
• Explains how to use new features even before they're widely supported

For recommendations of JavaScript books see JavaScript Beginners Book Choice and Advanced JavaScript Book Choices in our Programmer's Bookshelf section.

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