Javascript semaphore / test-and-set / lock?

Question

Is there such a thing as an atomic test-and-set, semaphore, or lock in Javascript?

I have javascript invoking async background processes via a custom protocol (the b

Answer 1

Maybe you could implement a basic integer semaphore, just add the variable into the DOM and lock/unlock it and make sure your functions keep checking it, else timeout them =)

If you are using a framework such as Mootools you could try to handle the flow of the app with events such as onComplete and so on.