Is this cheating?

Is this cheating?
0

#1

I directed some of methods in prototype chain, to get object’s keys sum of 6.
Is this cheating, or just the way to do work? I think this is not proper way to do it…
Here is challenge, take a look at first test:

var Person = function(firstAndLast) {
 
  this.getFirstName= function(){
    return this.first;
  };
  this.getLastName=  function(){
    return this.last;
  };
  this.getFullName=  function(){
    return this.first + " " + this.last;
  };
 
  this.setFirstName=  function(name){
    this.first = name;
  };
  
  this.setFullName(firstAndLast);
  
};

Person.prototype = {
   
  setFullName:  function(firstAndLast){
     firstAndLast = firstAndLast.split(' ');
     this.first = firstAndLast[0];
     this.last = firstAndLast[1];
  },
  setLastName: function(last){
  this.last = last;
  },
  
  
  
};

var bob = new Person('Bob Ross');
bob.getFullName();
console.log(Object.keys(bob).length);

#2

You should avoid public fields (this.first, this.last) of Person. Make them private (http://javascript.crockford.com/private.html).


#3

so easy solution, lol