New Features in this Release

What You Should Already Know

JavaScript Versions

Where to Find JavaScript Information

Document Conventions

What Is JavaScript?

JavaScript and Java

Debugging JavaScript

Visual JavaScript

JavaScript and the ECMA Specification

Relationship Between JavaScript and ECMA Versions

JavaScript Documentation vs. the ECMA Specification

JavaScript and ECMA Terminology

Part 1 Core Language Features

Values

Data Type Conversion

Variables

Declaring Variables

Evaluating Variables

Variable Scope

Literals

Array Literals

Boolean Literals

Floating-Point Literals

Integers

Object Literals

String Literals

Unicode

Unicode Compatibility with ASCII and ISO

Unicode Escape Sequences

Displaying Characters with Unicode

Expressions

Operators

Assignment Operators

Comparison Operators

Arithmetic Operators

Bitwise Operators

Logical Operators

String Operators

Special Operators

Operator Precedence

Creating a Regular Expression

Writing a Regular Expression Pattern

Using Simple Patterns

Using Special Characters

Using Parentheses

Working With Regular Expressions

Using Parenthesized Substring Matches

Executing a Global Search and Ignoring Case

Examples

Changing the Order in an Input String

Using Special Characters to Verify Input

Conditional Statements

if...else Statement

switch Statement

Loop Statements

for Statement

do...while Statement

while Statement

label Statement

break Statement

continue Statement

Object Manipulation Statements

for...in Statement

with Statement

Comments

Exception Handling Statements

The throw Statement

The try...catch Statement

Defining Functions

Calling Functions

Using the arguments Array

Predefined Functions

eval Function

isFinite Function

isNaN Function

parseInt and parseFloat Functions

Number and String Functions

escape and unescape Functions

Objects and Properties

Creating New Objects

Using Object Initializers

Using a Constructor Function

Indexing Object Properties

Defining Properties for an Object Type

Defining Methods

Using this for Object References

Deleting Objects

Predefined Core Objects

Array Object

Boolean Object

Date Object

Function Object

Math Object

Number Object

RegExp Object

String Object

Class-Based vs. Prototype-Based Languages

Defining a Class

Subclasses and Inheritance

Adding and Removing Properties

Summary of Differences

The Employee Example

Creating the Hierarchy

Object Properties

Inheriting Properties

Adding Properties

More Flexible Constructors

Property Inheritance Revisited

Local versus Inherited Values

Determining Instance Relationships

Global Information in Constructors

No Multiple Inheritance

Part 2 Working with LiveConnect

Working with Wrappers

JavaScript to Java Communication

The Packages Object

Working with Java Arrays

Package and Class References

Arguments of Type char

Handling Java Exceptions in JavaScript

Java to JavaScript Communication

Using the LiveConnect Classes

Data Type Conversions

JavaScript to Java Conversions

Java to JavaScript Conversions

Last Updated: 10/29/98 15:50:56