When is it appropriate to use synchronous ajax?

Question

I was just reading another question about jQuery\'s synchronous ajax call, and I got to wondering:

What circumstances make a synchronous version of an

Answer 1

In sum, please do not use synchronous requests as @Brandon says: they are a cheap/easy/quick way to avoid making a callback. In addition, modern browsers show warnings if synchronous requests are made and we do not like that. Make your world asynchronous.