How to activate two JavaScript functions in parallel?

Question

Anyone can tell me how to activate two (or more) JavaScript AJAX functions in parallel?

Answer 1

Javascript runs as a single thread, if the requests that you want to make doesn't have an IO, In that case its just not possible, if there's an IO operation involved, you can very well execute the two functions one after the other, the very nature of javascript will start executing the next function when it waits for IO. Usually in languages that support threading the same thing is achieved automatically during the CPU rest period for a thread.