Ajax, which stands for Asynchronous JavaScript and XML, lets us fetch and send data to and from a server asynchronously, in the background, without interfering with the user’s experience.
In Chapter 7, you saw examples of asynchronous behavior. While animations were running, you were able to execute other code, such as changing the element’s background color, and the user (in this case, you) was perfectly able to use the page while the animations were taking place. Nothing ...