AJAX is all around us, type something in the GOOGLE search bar & you will automatically see words appear in the input, that is the AJAX.
we'll generate a chat application in the last section of the coursework.
In the event you need to make web applications better & interactive for the users then you need to learn ajax.
Ajax makes you work asynchronously, asynchronously means without page reload. Let me share the actual definition of AJAX here:
"The method of exchanging data with a server, and updating parts of a web page - without reloading the entire page"
Now you got the idea about ajax, it's time to jump in the course and learn it.!