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Object-Oriented JavaScript - Second Edition

You're reading from   Object-Oriented JavaScript - Second Edition If you've limited or no experience with JavaScript, this book will put you on the road to being an expert. A wonderfully compiled introduction to objects in JavaScript, it teaches through examples and practical play.

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Product type Paperback
Published in Jul 2013
Publisher Packt
ISBN-13 9781849693127
Length 382 pages
Edition 2nd Edition
Languages
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Toc

Table of Contents (14) Chapters Close

Preface 1. Object-oriented JavaScript 2. Primitive Data Types, Arrays, Loops, and Conditions FREE CHAPTER 3. Functions 4. Objects 5. Prototype 6. Inheritance 7. The Browser Environment 8. Coding and Design Patterns A. Reserved Words B. Built-in Functions
C. Built-in Objects D. Regular Expressions
Index

Objects inherit from objects


All of the examples so far in this chapter assume that you create your objects with constructor functions and you want objects created with one constructor to inherit properties that come from another constructor. However, you can also create objects without the help of a constructor function, just by using the object literal and this is, in fact, less typing. So how about inheriting those?

In Java or PHP, you define classes and have them inherit from other classes. That's why you'll see the term classical, because the OO functionality comes from the use of classes. In JavaScript, there are no classes, so programmers that come from a classical background resort to constructor functions because constructors are the closest to what they are used to. In addition, JavaScript provides the new operator, which can further suggest that JavaScript is like Java. The truth is that, in the end, it all comes down to objects. The first example in this chapter used this syntax...

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