AJAX - Asynchronous Java And Xml
It is not a language; it is a method for dynamic content
It generally uses Javascript.
It retrieves XML data from a certain website using one of three constructors:
new XMLHttpRequest(); //In all good browsers (NOT IE)
new ActiveXObject("Msxml2.XMLHTTP") //Newer IE
new ActiveXObject("Microsoft.XMLHTTP") //Older IE
Google and Yahoo! both use AJAX, to name but a few.
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