You're reading from Professional JavaScript for Web Developers Discover an easy-to-learn guide to upgrade your JavaScript skills

Product type Paperback

Published in Nov 2019

Publisher Wiley

ISBN-13 9781119366447

Length 1144 pages

Edition 4th Edition

Languages

JavaScript

Tools

Combine

Concepts

Web Programming

Author (1):

Matt Frisbie

View More author details

Table of Contents (37) Chapters

COVER FREE CHAPTER

FOREWORD

INTRODUCTION

1 What Is JavaScript?

2 JavaScript in HTML

3 Language Basics

4 Variables, Scope, and Memory

5 Basic Reference Types

6 Collection Reference Types

7 Iterators and Generators

8 Objects, Classes, and Object-Oriented Programming

9 Proxies and Reflect

10 Functions

11 Promises and Async Functions

12 The Browser Object Model

13 Client Detection

14 The Document Object Model

15 DOM Extensions

16 DOM Levels 2 and 3

17 Events

18 Animation and Graphics with Canvas

19 Scripting Forms

20 JavaScript APIs

21 Error Handling and Debugging

22 XML in JavaScript

23 JSON

24 Network Requests and Remote Resources

25 Client-Side Storage

26 Modules

27 Workers

28 Best Practices

A ES2018 and ES2019

B Strict Mode

C JavaScript Libraries and Frameworks

D JavaScript Tools

INDEX

END USER LICENSE AGREEMENT

OBJECT CREATION

Although using the Object constructor or an object literal are convenient ways to create single objects, there is an obvious downside: Creating multiple objects with the same interface requires a lot of code duplication.

Overview

Through successive specifications, the available features of ECMAScript followed a highly unusual pattern. Through the ECMAScript 5.1 specification, there was no formal support for object-oriented constructs such as classes or inheritance. However, as you will see in the following sections, clever application of prototypal inheritance allowed JavaScript developers to emulate this behavior—quite successfully.

With the ECMAScript 6 specification, formal support for classes and inheritance was introduced. These ES6 classes are intended to completely subsume the prototype-based class solutions designed in previous specifications. However, their implementation is, in many ways, merely a syntactical abstraction for ES5.1-style constructor functions...