JavaScript

Optional Chaining

const user1 = {
  name: "Sam Smith",
  showGreeting() {
    console.log(`I am ${this.name}`);
  }
};

const user2 = {
  name: "Adam Smith",
};

user1.showGreeting();
user2.showGreeting();

const user1 = {
  name: "Sam Smith",
  showGreeting() {
    console.log(`I am ${this.name}`);
  }
};

const user2 = {
  name: "Adam Smith",
};

user1.showGreeting?.();
user2.showGreeting?.();