Extracting return value from nested callback function

Question

To simplify my question i did some modifications to the code. I am now able to get the value from the callback function i now want to pass this data into a variable.

Answer 1

You're calling handleServerResponse when you send the request, not in the callback. It should be:

var doesErrorsExist = postToServer(function() {
    handleServerResponse(containers, function (args) {
        return args;
    });
});

But this still won't work -- an asynchronous function can never return a value to its caller, because the value won't exist until the operation completes after the function returns.

I haven't tried to figure out the logic of everything you're trying to do, so I don't have a concrete suggestion for how to fix that. I think if you reread the question you linked to, you should get some more insight.