AJAX Introduction
AJAX = Asynchronous JavaScript and XML
AJAX is not a new programming language, but a new technique for creating better, faster, and more interactive web applications.
With AJAX, a JavaScript can communicate directly with the server, with the XMLHttpRequest object. With this object,
a 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.
AJAX is based on Internet standards
AJAX is based on the following web standards:
 AJAX applications are browser- and platform-independent.
AJAX is about better Internet-applications
Internet-applications have many benefits over desktop applications; they can reach a larger audience, they are easier to install and support, and easier to develop.
However, Internet-applications are not always as "rich" and user-friendly as traditional desktop applications.
With AJAX, Internet applications can be made richer and more user-friendly.
Start using AJAX today
There is nothing new to learn.
AJAX is based on existing standards. These standards have been used by developers for several years.
PHP and AJAX
There is no such thing as an AJAX server. AJAX runs in your browser. AJAX uses HTTP requests
to request small pieces of information from the server, instead of whole pages.
In our PHP tutorial we will demonstrate how a web page can communicate with a
PHP web server online.
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