Basic Data Fetching using useQuery

Demonstrate how to fetch data from an API using the useQuery hook, including the handling of loading, error, and data states.

import { useQuery } from 'react-query';
import axios from 'axios';

Import the useQuery hook from React Query and axios for making API calls.

const fetchPosts = async () => {
  const { data } = await axios.get('https://jsonplaceholder.typicode.com/posts');
  return data;
};

Define an asynchronous function to fetch posts from the JSONPlaceholder API.

const PostsComponent = () => {
  const { isLoading, error, data } = useQuery('posts', fetchPosts);

  if (isLoading) return <div>Loading...</div>;
  if (error) return <div>An error has occurred: {error.message}</div>;

  return (
    <ul>
      {data.map(post => (
        <li key={post.id}>{post.title}</li>
      ))}
    </ul>
  );
};

Use the useQuery hook to fetch data. Handle loading, error, and data states by conditionally rendering different UI elements.