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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 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

Implementing the Reflect API

The Reflect API is used for object reflection (that is, inspecting and manipulating the properties of objects). Although ES5 already had APIs for object reflection, these APIs were not well organized and, on failure, used to throw an exception. The Reflect API is well organized and makes it easier to read and write code, as it doesn't throw exceptions on failure. Instead, it returns the Boolean value, representing if the operation was true or false. Since developers are adapting to the Reflect API for object reflection, it's important to learn this API in depth. In this chapter, we'll cover:

  • Calling a function with a given this value
  • Invoking a constructor with the prototype property of another constructor
  • Defining or modifying the attributes of the object properties
  • Enumerating the properties of an object using an iterator object
  • Retrieving...
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