Defining Your Own Object Types

This chapter provides introductions and tutorial examples on how to define your own object types. Topics include defining constructor functions, adding properties and methods to objects or constructor prototypes, looping through properties and methods, using 'instanceof' and 'typeof' operators.

Prototype-Dased Object-Oriented Programming Style

Prototype-Based Programming Features in JavaScript

Defining Object Constructor Functions

Adding Properties and Methods to Objects

"for ... in" and "for each ... in" Statements

"prototype" Property of the Constructor Function Object

"instanceof" Operator - Determining Object Type

"typeof" Operator and Data Types

Table of Contents

 About This Book

 Introduction to JavaScript

 ECMAScript Language Specification and JavaScript Dialects

 Data Types, Variables and Expressions

 Flow Control Statements

 Creating, Accessing, and Manipulating Arrays

 Defining and Calling Functions

 Web Browser Supporting JavaScript

 Server-Side and Client-Side Web Scripting

 Introduction to Objects

Defining Your Own Object Types

 Inheritance of Properties and Methods through the Prototype Object Chain

 'jrunscript' - JavaScript Shell Command from JDK

 Using Functions as "Function" Objects

 Introduction to Built-in Object Types

 W3C's Document Object Model (DOM) Specifications

 References

 PDF Printing Version