Correct spelling of an asynchronous application?

Question

JavaScript

Task:
Register the execution of all requests united by a common goal. Execute code when all requests complete.
I have little experience in solving such problems, colleagues, tell me, am I going the right way?
ajax_request and another_ajax_request can be called in arbitrary parts of the code, callback tower blocks are strongly discouraged.
My code:
jsfiddle.net/alexbaumgertner/72dcK

ApplicationDeferreds = {

    deferreds: [],

    done: function(callback) {
        jQuery.when.apply(null, this.deferreds).done(callback);
    },
    register: function(deferred) {
        var self = this;

        // delete resolved
        jQuery.each(this.deferreds, function(index, value) {
            if (value.state() == 'resolved') {
                self.deferreds.splice(self.deferreds.indexOf(value), 1);
            }
        });

        this.deferreds.push(deferred);
    }
};

function ajax_request() {
    ApplicationDeferreds.register(jQuery.get('/'));
}
function another_ajax_request() {
    ApplicationDeferreds.register(jQuery.get('/'));
}

ajax_request();
another_ajax_request();

ApplicationDeferreds.done(function() {
    // do someone
    $('#result').html('done!');
});

Answer 1

Maybe this api.jquery.com/category/callbacks-object/ will help.

Answer 2

I would do this:
ajax_request(callback1);
ajax_request(callback2);
While this is very dependent on tasks, there are some that require consistency.