Collectible Card Game example

Here is an example of an asynchronous operation in the context of a collectible card game:

class CardGame {
  constructor() {
    this.cards = [];
  }

  async loadCards() {
    // This is an asynchronous operation
    const response = await fetch('https://example.com/cards');
    const data = await response.json();

    // This line of code will not run until the data has been retrieved
    this.cards = data;
  }

  // Public method
  startGame() {
    console.log('Starting game with cards:');
    console.log(this.cards);
  }
}

const game = new CardGame();

// This function call is asynchronous
game.loadCards();

// This line of code will run before the cards have been loaded
console.log('Loading cards...');

// This function call will be executed after the cards have been loaded
game.startGame();

In this example, the CardGame class has a public method called loadCards that performs an asynchronous operation to retrieve a list of cards from a remote server. The await keyword is used to wait for the data to be retrieved before the rest of the function is executed.

While the loadCards function is waiting for the data to be retrieved, the rest of the code continues to run. This is why the console.log statement outside of the loadCards function is executed before the data has been retrieved.

Once the data has been retrieved, the cards field of the CardGame instance is set to the list of cards, and the startGame method is called to start the game.

Async/await makes it easier to write asynchronous code that is easy to read and understand. In this case, using async/await to load the cards asynchronously allows us to start the game without having to wait for the cards to be retrieved, which would make the game feel more responsive to the player.