A lot of times we want to provide some sort of feedback to the user, while executing a task that usually takes a lot of time in the server. However it is not always desirable to utilize a technique like polling. Instead we can use either one of these two methods in order to update the DOM and let the user know what is going on.
I was recently asked, by a good friend of mine if it’s possible to make synchronous AJAX calls without freezing the UI.
The short answer is: no.
However there are a lot of ways that you can get around this restriction, some more graceful than the others. In this article I will demonstrate three of them