gistfile1.js

// Functional serialized asynchronous recursion
(function serialRandomTimeout(x) {                                              
    if (x.value) {                                                              
        setTimeout(function () {                                                
            console.log(x.value);                                               
            serialRandomTimeout(x.next)                                         
        }, Math.random() * 1000);                                               
    }                                                                           
})([1,2,3].reduceRight(function (prev, next) {                                  
    prev.next = JSON.parse(JSON.stringify(prev));                               
    prev.value = next;                                                          
    return prev;                                                                
}, {}));