JavaScript chaining 2

chain2.js

var chain = (function() {
  var count = 0;
  function Inner() {
    var self = this;
    self.funcA = function(num) { count += num; return self; }
    self.funcB = function() { count += 2; return self; }
    self.ok = function() { var result = count; count=0; return result; }
  }
  return new Inner();  
}());

var result1 = chain.funcA(6).funcB().ok();
var result2 = chain.funcA(7).funcB().ok();