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The fetch API is a promise-based JavaScript API for making asynchronous requests in the browser. It is a simple and clean API that uses promises to provide a powerful and flexible feature set to fetch resources from the server. The fetch() method can intercept any error that is thrown during the execution of the request. It can also be used for any other HTTP method in the request: POST, PUT, DELETE, HEAD and OPTIONS. All you need to do is set the method and body parameters in the fetch() options.