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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 FREE CHAPTER 2. Primitive Data Types, Arrays, Loops, and Conditions 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

Object

Object() is a constructor that creates objects, for example:

> var o = new Object();

This is the same as using the object literal:

> var o = {}; // recommended

You can pass anything to the constructor and it will try to guess what it is and use a more appropriate constructor. For example, passing a string to new Object() will be the same as using the new String() constructor. This is not a recommended practice (it's better to be explicit than let guesses creep in), but still possible.

> var o = new Object('something');
> o.constructor;
function String() { [native code] }
> var o = new Object(123);
> o.constructor;
function Number() { [native code] }

All other objects, built-in or custom, inherit from Object. So, the properties and methods listed in the following sections apply to all types of objects.

Members of the Object constructor

Have a look at the following table:

Property/method

Description

Object.prototype

The prototype of all objects (also...

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