AJAX = Asynchronous JavaScript and XML

AJAX is not a new programming language, but a technique for creating
better, faster, and more interactive web applications.

With AJAX, your JavaScript can communicate directly with the server,
using the JavaScript XMLHttpRequest object. With this object, your
JavaScript can trade data with a web server, without reloading the
page.

AJAX uses asynchronous data transfer (HTTP requests) between the
browser and the web server, allowing web pages to request small bits
of information from the server instead of whole pages.

The AJAX technique makes Internet applications smaller, faster and
more user-friendly.

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