/Javascript/Express/How to send response in express js

How to send response in express js

(req, res) => res.send('Hello World!')
//Use end() to send an empty response
res.end()
res.status(404).end()// for not found pages
//use either
//res.status(404).send('File not found') === res.sendStatus(404)

Source: flaviocopes.com

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