To set headers in the frontend, you can use JavaScript’s Fetch API or libraries like Axios. Here’s a concise guide:

1. Using Fetch API:
   fetch(‘https://api.example.com’, {     method: ‘POST’,     headers: {       ‘Content-Type’: ‘application/json’,       ‘Authorization’: ‘Bearer your-token’     },     body: JSON.stringify({ name: ‘John’ })   });

2. Using Axios:
   axios.post(‘https://api.example.com’, { name: ‘John’ }, {     headers: {       ‘Content-Type’: ‘application/json’,       ‘Authorization’: ‘Bearer your-token’     },     withCredentials: true   });

3. Handling Credentials (CORS):

4. Include credentials: ‘include’ in Fetch or set withCredentials: true in Axios to send cookies.

5. Including Custom Headers:

6. Add custom headers like API keys or authentication tokens as needed.

7. Managing Dynamic Headers:

8. Use state management libraries (e.g., Redux) to dynamically include tokens in requests.

By following these steps, you can effectively set and manage headers in your frontend applications.