Express: res.attachment([filename]): Set Content-Disposition header

res.attachment([filename])

This method is used to set Content-disposition header.

Content-Disposition: It is a response header is a header indicating if the content is expected to be displayed inline in the browser, that is, as a Web page or as part of a Web page, or as an attachment, that is downloaded and saved locally.

index.js

'use strict'

const express = require('express')

const app = express()

app.get('/', (req, res) => {
 res.send('Hello World')
})

app.get('/logo', (req, res) => {
 var fileName = 'https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgpixXs2G_QuEGl0QdCfuZVHIiXFldXDr__UKJEe-09ja_7faZ2yrsCw595igJ0PlAlQwb_dsKy1BwO1GE8PhNb6rRMx_2SSCvxMU9GBoD0pkvIWbuIYc5rivXmLwJ22IlDSML9Cd_WqNJV/s1600/single+level.bmp'
 res.attachment(fileName)
 
 res.send('Sent the logo')
})


const port = 3000
app.listen(port, () => console.log(`Application started listening on port ${port}!`));

Run index.js

Open the url 'http://localhost:3000/logo' in browser, it opens the attached file.

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