AJAX

AJAX (Asynchronous JavaScript and XML) is a technique that allows a web application to communicate with a server in the background without requiring the page to be reloaded. This provides a fluid and responsive user experience, similar to that of a native application. In practical terms, AJAX uses asynchronous HTTP requests to send or retrieve data, often in JSON format rather than the XML format used today. JavaScript drives the exchanges, while any server-side language (PHP, Node.js, Python, etc.) can process the data. AJAX is the basis on which many modern interfaces function: real-time suggestions, refreshing of page sections, notifications, instant messaging, etc.