Fetch API in JavaScript is a modern interface that provides a powerful and flexible feature to fetch resources across the network. It is an improved version of the older XMLHttpRequest that was used to request data from a server. The Fetch API returns Promises and uses the Promise API for handling responses and errors, providing a more powerful and clean way to handle asynchronous code when compared to using callbacks or the XMLHttpRequest API. It can be used for making requests, including POST, GET, DELETE, HEAD, and other types of HTTP requests. The Fetch API is also capable of making CORS requests and supports the use of HTTP/S or local files.
