ECMAScript for XML (E4X): A Simpler Programming Model

Developing software to create, navigate and manipulate XML data has become a significant part of almost every developer's job. Developers are inundated with a wide variety of data encoded in XML, including web pages, web services, deployment descriptors, configuration files, project make files and a variety of XML vocabularies for vertical industries (from purchase orders to target lists).

Schneider, John. IDEAlliance (2004). Articles>Information Design>XML>JavaScript