Intro to Ajax and the Node.js Server

The term AJAX is a pseudo-acronym for "Asynchronous JavaScript And XML," but is now used much more broadly to cover all methods of communicating with a server using JavaScript. As we will see, Ajax is not always asynchronous and does not always involve XML.

Node.js is an open-source, cross-platform server that runs JavaScript on the server-side; we'll use Node.js as the back end for our Ajax demos and exercises.

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