Performing a POST Request with JSON Data

async function createResource(url, data) {
  try {
    const response = await fetch(url, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        'Accept': 'application/json' // Indicate expected response type
      },
      body: JSON.stringify(data)
    });

    if (!response.ok) {
      const errorData = await response.json().catch(() => ({ message: response.statusText }));
      throw new Error(`Failed to create resource. Status: ${response.status}, Message: ${errorData.message}`);
    }

    // Typically, POST requests return the newly created resource or a success message
    const responseData = await response.json();
    console.log('Resource created successfully:', responseData);
    return responseData;
  } catch (error) {
    console.error('Error creating resource:', error.message);
    throw error;
  }
}

// Example Usage:
// const newPost = {
//   title: 'My New Awesome Post',
//   body: 'This is the content of my new post.',
//   userId: 1
// };

// createResource('https://jsonplaceholder.typicode.com/posts', newPost)
//   .then(data => console.log('Created Post:', data))
//   .catch(error => console.error('Error creating post:', error));

// // For file uploads, use FormData instead of JSON.stringify and omit Content-Type header
// async function uploadFile(url, file) {
//   const formData = new FormData();
//   formData.append('file', file);
//   // Add other fields if needed: formData.append('name', 'My Document');

//   const response = await fetch(url, {
//     method: 'POST',
//     body: formData // fetch automatically sets 'Content-Type: multipart/form-data'
//   });
//   return response.json();
// }
// // Example: uploadFile('/api/upload', myFileObject);