chain

chain.js

function chain() {
  var cur = prev = null;
  for (var i = l = arguments.length - 1; i >= 0; i--) {
    prev = cur;
    cur = (function(params) { 
      return function() {
        for (var param in params) { 
          this[param] = params[param];
        }
      }
    })(arguments[i]);
    if (i < l) {
      cur.prototype = new prev;
    } 
  }
  return new cur;
}

var a = {a: 1}, b = {b: 2}, c = {c: 3},
  chained = chain(a, b, c);
console.log(chained.c); // 3