Find out how to code a cross-browser XMLHttpRequest object, as well as some ways you can create AJAX pages without XMLHttpRequest support, with these detailed examples from the soon-to-be ...

The Firebug Lite JavaScript suite replicates the most useful tools you'll find in the venerable Firebug add-on, including the console, command line interface and XmlHttpRequest inspector.

When manually writing and maintaining the XMLHttpRequest code, a developer must deal with many potential problems, especially with cross-browser compatibilities like different DOM implementations.