What are API headers and why are they important?

What are API headers and why are they important?

API headers are key-value pairs sent in HTTP requests and responses. They provide essential information about the request or response, such as content type, authentication, and caching.

Can you give me examples of common API headers?

Sure! Common API headers include 'Content-Type' (indicates the media type), 'Authorization' (for authentication), and 'User-Agent' (provides information about the client).

How do I set headers in a fetch request?

You can set headers in a fetch request by using the 'headers' option. For example: fetch(url, { method: 'GET', headers: { 'Authorization': 'Bearer token' } });

What happens if I forget to include headers?

If you forget to include necessary headers, the API may return an error or not function as expected, as it relies on those headers for proper processing.