this.age = 8
this.name = "Steve"

manAttributes = ["age","name"]

console.log(Human.manAttributes[0])

var human = {

  name: "Smith",
  age: "29"

};


var manAttributes = ["age","name"];

for(var prop in manAttributes){
  if(human.hasOwnProperty(manAttributes[prop])){
    console.log(manAttributes[prop] + ": "+human[manAttributes[prop]]);
  }
}

var Human = {
     manAttributes: ["age","name"],
     age: 8
 };
 alert(Human[Human.manAttributes[0]]);  //alerts 8