JavaScript is the language of the Web. It has an intuitive, accessible nature and is available with most modern browsers. JavaScript is used for making dynamic, interactive web pages - from form validation to creating games to dynamic menus - but its uses also go much further. Hardly a single commercial web page exists today that does not contain some JavaScript. This second edition of Professional JavaScript provides comprehensive coverage of the JavaScript language, its syntax and uses. We look at the latest web browsers and web standards, and move on to examine practical techniques in the form of short examples and more in-depth and complex case studies. This book will focus entirely on the use of JavaScript within the web browser, since this is predominantly where it is used. This book covers Core JavaScript programming Scripting browser objects Working with multimedia Web standards, including XML, CSS, & W3C DOM Dynamic HTML Debugging techniques Regular expressions and form validation Real world case studies The ECMAScript Edition 4 proposal