Understanding the credentials Option in the Fetch API

In the previous article, we learned how credentials: "include" allows the browser to include eligible Cookies in Cross-Origin requests.

However, include is only one of the available credential modes.

In this article, we'll explore all three values of the credentials option, explain their behavior, and see how they relate to Cookies and CORS.

What is the credentials Option?

The credentials option tells the browser whether authentication-related information should be included with an HTTP request.