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This document is obsolete and applies only to Netscape Communicator 4.x. It has been replaced by the current documentation for JavaScript 1.5 which applies to Netscape 6.x, Netscape 7.x, Mozilla and all browsers based upon Gecko.

For links to all current JavaScript Documentation please see JavaScript Central.

Core JavaScript Guide

This book describes the core JavaScript language for version 1.4. JavaScript is Netscape's cross-platform, object-based scripting language. Core JavaScript can be extended for a variety of purposes by supplementing it with additional objects.

Contents

New Features in this Release

About this Book

New Features in this Release
What You Should Already Know
JavaScript Versions
Where to Find JavaScript Information
Document Conventions

Chapter 1  JavaScript Overview

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

Chapter 2  Values, Variables, and Literals

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

Chapter 3  Expressions and Operators

Expressions
Operators
Assignment Operators
Comparison Operators
Arithmetic Operators
Bitwise Operators
Logical Operators
String Operators
Special Operators
Operator Precedence

Chapter 4  Regular Expressions

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

Chapter 5  Statements

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

Chapter 6  Functions

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

Chapter 7  Working with Objects

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

Chapter 8  Details of the Object Model

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

Chapter 9  LiveConnect Overview

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

Glossary

Index


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

Copyright (c) 1998 Netscape Communications Corporation

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