Important terms related to Web Design & Development
AJAX stands for Asynchronous JavaScript and XML. It helps to use the abilities of JavaScript, the Document Object Model, and XML to create interactivity on the web. It is described as a collection of technologies used to automatically update and manipulate the information on a web page while it is being viewed in a browser (i.e. without the user having to manually refresh the page).
This allows developers to create more sophisticated web pages and applications without having to add to the native capabilities of the browser. A key component is the use of XMLHttp Request, a function originally added to browsers by Microsoft, to exchange data in the background with one or more web servers.