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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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Toc

Table of Contents (14) Chapters Close

Preface 1. Getting Started with ECMAScript FREE CHAPTER 2. Knowing Your Library 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

Collections

A collection is an object that stores multiple elements as a single unit. ES6 introduced various new collection objects to provide better ways of storing and organizing data.

The array was the only collection object available in ES5. Now we have ArrayBuffers, SharedArrayBuffers, Typed Arrays, Sets, and Maps, which are built in collection objects.

Let's explore the different collection objects provided in JavaScript.

ArrayBuffer

Elements of arrays can be of any type, such as strings, numbers, objects, and so on. Arrays can grow dynamically. The problem with arrays is that they are slow in terms of execution time and occupy more memory. This causes issues while developing applications that require too much computation...

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