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Learn ECMAScript

You're reading from   Learn ECMAScript Discover the latest ECMAScript features in order to write cleaner code and learn the fundamentals of JavaScript

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Product type Paperback
Published in Feb 2018
Publisher
ISBN-13 9781788620062
Length 298 pages
Edition 2nd Edition
Languages
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Authors (2):
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Narayan Prusty Narayan Prusty
Author Profile Icon Narayan Prusty
Narayan Prusty
MEHUL MOHAN MEHUL MOHAN
Author Profile Icon MEHUL MOHAN
MEHUL MOHAN
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Table of Contents (14) Chapters Close

Preface 1. Getting Started with ECMAScript 2. Knowing Your Library FREE CHAPTER 3. Using Iterators 4. Asynchronous Programming 5. Modular Programming 6. Implementing the Reflect API 7. Proxies 8. Classes 9. JavaScript on the Web 10. Storage APIs in JavaScript 11. Web and Service Workers 12. Shared Memory and Atomics 13. Other Books You May Enjoy

Arrays

There are some new properties added to the global Array object and to its instances to make working with arrays easier. Arrays in JavaScript lacked features and capabilities when compared with programming languages such as Python and Ruby. Let's take a look at some popular methods associated with arrays and their use cases.

The Array.from(iterable, mapFunc, this) method

The Array.from() method creates a new array instance from an iterable object. The first argument is a reference to the iterable object. The second argument is optional and is a callback (known as the Map function) that is called for every element of the iterable object. The third argument is also optional and is the value of this inside...

You have been reading a chapter from
Learn ECMAScript - Second Edition
Published in: Feb 2018
Publisher:
ISBN-13: 9781788620062
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