JavaScript Async/Await Guide

# JavaScript Async/Await

## Basic Usage

```javascript

// Async function declaration

async function fetchUser(id) {

  try {

    const response = await fetch(`/api/users/${id}`);

    const data = await response.json();

    return data;

  } catch (error) {

    console.error("Error fetching user:", error);

    throw error;

  }

}

// Arrow function async

const getPost = async (id) => {

  const res = await fetch(`/api/posts/${id}`);

  return res.json();

};

// Parallel execution

const [users, posts] = await Promise.all([

  fetchUsers(),

  fetchPosts()

]);

Error Handling

Always wrap await calls in try/catch for proper error handling.