How to block on asynchronous functions in JavaScript

Question

I need to write a function in JavaScript, which returns a state from calling an asynchronous function. However, the caller only receives the value and no callback function i

Answer 1

Why not just:

asyncCall("request", function() {
    // here you can inspect the state
});

What's the point of the wrapper function?

Asynchronous functions work this way. If you want to block the execution, then use a synchronous call:

var state = syncCall("request");