XMLHttpRequest to make Ajax Call using Javascript

In this AJAX Tutorial i will try to explain "What is AJAX" & how you can start to learn AJAX from very basic. Ajax means Asynchronous JavaScript and XML. Asynchronous means that when you send a request, you wait for the response to come back, but are free to do other things while you wait. Ajax is not a new technology but in these days we found it in a new way. Currently almost all developers