Chapter 3. JavaScript API Reference

The rest of this book contains a quick-reference for the core and client-side JavaScript APIs. It documents the complete core JavaScript API, covers the legacy (Level 0) DOM API, and presents a simplified view of the W3C Level 2 DOM API. Portions of that API not relevant to JavaScript programmers working with HTML documents have been omitted. The upper-right corner of the title block for each reference entry contains information that states whether a feature is part of the core or client-side API, and further indicates which version of JavaScript, which browsers, or which version of the DOM introduced the feature.

Because JavaScript is a loosely-typed language, there is not an official set of class names for the classes and objects of the JavaScript API, and they sometimes appear under different names in different references. (For brevity, this book actually uses a slightly different set of names than its big brother, JavaScript: The Definitive Guide.) The following table summarizes the reference entries that follow, and allows you to quickly scan for the class or object you are interested in.