What is the use of fetch() in JavaScript?

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The fetch() function in JavaScript is used to make asynchronous HTTP requests to servers, typically to retrieve or send data. It provides a modern, promise-based alternative to older methods like XMLHttpRequest, making code cleaner and easier to manage.

fetch() returns a Promise that resolves to a Response object representing the result of the request. You can then use methods like .json(), .text(), or .blob() on the response to extract the data.

Key Features:

• GET requests by default (to retrieve data).

• Supports other HTTP methods like POST, PUT, DELETE via an options object.

• Allows setting headers, body, and credentials.

In summary, fetch() is essential for client-server communication in web apps, enabling data exchange with APIs or back-end services without reloading the page.

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