how to download file in react js

If you are using React Router, use this:

<Link to="/files/myfile.pdf" target="_blank" download>Download</Link>

Where /files/myfile.pdf is inside your public folder.

This is not related to React. However, you can use the download attribute on the anchor <a> element to tell the browser to download the file.

<a href='/somefile.txt' download>Click to download</a>

This is not supported on all browsers: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/a