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Object-Oriented JavaScript

You're reading from   Object-Oriented JavaScript Learn everything you need to know about object-oriented JavaScript (OOJS)

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Product type Paperback
Published in Jan 2017
Publisher Packt
ISBN-13 9781785880568
Length 550 pages
Edition 3rd Edition
Languages
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Authors (2):
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Ved Antani Ved Antani
Author Profile Icon Ved Antani
Ved Antani
Stoyan STEFANOV Stoyan STEFANOV
Author Profile Icon Stoyan STEFANOV
Stoyan STEFANOV
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Table of Contents (25) Chapters Close

Object-Oriented JavaScript - Third Edition
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
1. Object-Oriented JavaScript FREE CHAPTER 2. Primitive Data Types, Arrays, Loops, and Conditions 3. Functions 4. Objects 5. ES6 Iterators and Generators 6. Prototype 7. Inheritance 8. Classes and Modules 9. Promises and Proxies 10. The Browser Environment 11. Coding and Design Patterns 12. Testing and Debugging 13. Reactive Programming and React Reserved Words Built-in Functions
Built-in Objects Regular Expressions
Answers to Exercise Questions

BOM and DOM - an overview


The JavaScript code in a page has access to a number of objects. These objects can be divided into the following types:

  • Core ECMAScript objects: This consists of all the objects mentioned in the previous chapters

  • DOM: This consists of objects that have to do with the currently loaded page, which is also called the document

  • BOM: This consists of objects that deal with everything outside the page-the browser window and the desktop screen

DOM stands for Document Object Model and BOM for Browser Object Model.

The DOM is a standard governed by the World Wide Web Consortium (W3C) and has different versions, called levels, such as DOM Level 1, DOM Level 2, and so on. Browsers in use today have different degrees of compliance with the standard, but in general, they almost all completely implement DOM Level 1. The DOM was standardized post factum after the browser vendors had each implemented their own ways to access the document. The legacy part from before the W3C took over...

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