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

INHERITANCE

The concept most often discussed in relation to OO programming is inheritance. Many OO languages support two types of inheritance: interface inheritance, where only the method signatures are inherited, and implementation inheritance, where actual methods are inherited. Interface inheritance is not possible in ECMAScript because functions do not have signatures. Implementation inheritance is the only type of inheritance supported by ECMAScript, and this is done primarily through the use of prototype chaining.

Prototype Chaining

ECMA-262 describes prototype chaining as the primary method of inheritance in ECMAScript. The basic idea is to use the concept of prototypes to inherit properties and methods between two reference types. Recall the relationship between constructors, prototypes, and instances: each constructor has a prototype object that points back to the constructor, and instances have an internal pointer to the prototype. What if the prototype were actually an instance...