const persons = [
  {firstName: "Lebron", lastName: "James"},
  {firstName: "Magic", lastName: "Johnson"},
  {firstName: "Wilt", lastName: "Chamberlin"},
  {firstName: "Kevin", lastName: "Durant"},
  {firstName: "Stephen", lastName: "Curry"}
];
const player1 = persons.find(person => person.firstName === "Magic");
console.log(player1);
// outputs {firstName: "Magic", lastName: "Johnson"}
const player2 = persons.find(person => person.lastName === "Curry");
console.log(player2);
// outputs {firstName: "Stephen", lastName: "Curry"}