string as a key in object

object.js

const type = 'coke';

const drinks = {
  coke: 'Coke',
  pepsi: 'Pepsi',
  lemonade: 'Lemonade',
  default: 'Default item',
  num: 1,
};

console.log(drinks[type]);
console.log(drinks.num);
console.log(drinks.coke);