Topic summary
AJAX
Extracted from the Wikipedia article Ajax (programming).
Ajax is not a technology, but rather a programming pattern. The webpage can be modified by JavaScript to dynamically display (and allow the user to interact with) retrieved information without refreshing the page. The built-in XMLHttpRequest object can be used to execute Ajax requests on webpages, and the built-in fetch() function is a newer alternative to XMLHttpRequest that can also be used to perform Ajax.