Callback

var c = 1;
function progressUpdate(max, min, _callback){
    if (c == 0) {
        console.log(c);
         _callback();
    } else if (c == 1) {
        t = setTimeout(function() {
            CurrentProgress = min + 1;
            progressUpdate(max, CurrentProgress);
            console.log(CurrentProgress);
            if (CurrentProgress >= max) {
                CurrentProgress = max;

                clearTimeout(t);
                t = 0;
                c = 0;
                progressUpdate(max, CurrentProgress);
           }
        },100);
    }
}
progressUpdate(2, 0, function() {
    alert("test");
});