Async/Await & Promises

1// Creating a Promise
2const fetchUser = new Promise((resolve, reject) => {
3  const success = true;
4  setTimeout(() => {
5    if (success) {
6      resolve({ name: "Alice", role: "Developer" });
7    } else {
8      reject("User not found");
9    }
10  }, 1000);
11});
12 
13// Consuming a Promise
14fetchUser
15  .then(user => console.log(user.name)) // Alice
16  .catch(err => console.error(err));

1async function getUserData(userId) {
2  try {
3    const response = await fetch(`/api/users/${userId}`);
4    const data = await response.json();
5    console.log(data.name);
6    return data;
7  } catch (error) {
8    console.error("Failed to fetch user:", error);
9  }
10}
11 
12// Using await with multiple operations
13async function loadDashboard() {
14  const [user, posts] = await Promise.all([
15    fetch("/api/user").then(r => r.json()),
16    fetch("/api/posts").then(r => r.json()),
17  ]);
18  console.log(`${user.name} has ${posts.length} posts`);
19}