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Professional JavaScript for Web Developers

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

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Product type Paperback
Published in Nov 2019
Publisher Wiley
ISBN-13 9781119366447
Length 1144 pages
Edition 4th Edition
Languages
Tools
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Author (1):
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Matt Frisbie Matt Frisbie
Author Profile Icon Matt Frisbie
Matt Frisbie
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Table of Contents (37) Chapters Close

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

SUMMARY

As JavaScript development has matured, best practices have emerged. What once was considered a hobby is now a legitimate profession and, as such, has experienced the type of research into maintainability, performance, and deployment traditionally done for other programming languages.

Maintainability in JavaScript has to do partially with the following code conventions:

  • Code conventions from other languages may be used to determine when to comment and how to indent, but JavaScript requires some special conventions to make up for the loosely typed nature of the language.
  • Because JavaScript must coexist with HTML and CSS, it's also important to let each wholly define its purpose: JavaScript should define behavior, HTML should define content, and CSS should define appearance.
  • Any mixing of these responsibilities can lead to difficult-to-debug errors and maintenance issues.

As the amount of JavaScript has increased in web applications, performance has become more important. Therefore...

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