object lookup examples

object.js

var me = {
  name: "David Waller",
  nickName: "Davve",
  prop: "kopp"
};

var formalSituation = true;
var prop;

// ------------ LÖSNING 1

if (formalSituation){
  prop = "name";
} else {
  prop = "nickName";
}

console.log("Hello my name is", me[prop]);

// ---------- LÖSNING 1.5

prop = formalSituation ? "name" : "nickName";

console.log("Hello my name is", me[prop]);

// ---------- LÖSNING 2

if (formalSituation){
  console.log("Hello my name is", me.name);
} else {
  console.log("Hello my name is", me.nickName);
}

// ---------- LÖSNING 3

console.log("Hello my name is", me[formalSituation ? "name" : "nickName"]);