Based on open standards, AJAX uses a browser built-in XMLHttpRequest object, JavaScript and HTML Document Object Model (DOM) to exchange data between a web browser and web server, and to display this ...

jQuery is an open-sourced JavaScript library that simplifies HTML Document Object Model (DOM) manipulation, Asynchronous JavaScript and XML (Ajax) and event handling.

The primary use of JavaScript is to write functions that are embedded in or included from HTML pages and that interact with the Document Object Model (DOM) of the page.