Description: DOM is one of the unique functions that made JavaScript what it is today: a great RIA language, becoming the core of Ajax. Understanding Ajax is virtually impossible when you do not have faint information about DOM. DOM which stands for Document Object Model, makes it possible for JavaScript to read HTML and transmit them to a webpage just like a JavaScript should be. With the use of DOM, developers should find it easy to create HTML files and get JavaScript to load them as an RIA.