preface 2 | JavaScriptSource

preface 2

JavaScriptSource Staff Jul 24, 2006
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Core JavaScript Guide 1.5

About this Book

JavaScript is Netscape's cross-platform, object-based scripting language. This book explains everything you need to know about using core JavaScript.

This preface contains the following sections:

New Features in this Release

For a summary of JavaScript 1.5 features, see "New Features in this Release" on page 18. Information on these features has been incorporated in this manual.

What You Should Already Know

This book assumes you have the following basic background:

  • A general understanding of the Internet and the World Wide Web (WWW).

  • Good working knowledge of HyperText Markup Language (HTML).

Some programming experience with a language such as C or Visual Basic is useful, but not required.

JavaScript Versions

Each version of Navigator supports a different version of JavaScript. To help you write scripts that are compatible with multiple versions of Navigator, this manual lists the JavaScript version in which each feature was implemented.

The following table lists the JavaScript version supported by different Navigator versions. Versions of Navigator prior to 2.0 do not support JavaScript.