Express: res.type(type): Set Content-Type header

res.type(type)

This method is used to set the Content-Type header.

Example

res.type('html');               // => 'text/html'

res.type('json');               // => 'application/json'

res.type('application/json');   // => 'application/json'

res.type('png');                // => image/png:

index.js

'use strict'

const express = require('express')

const app = express()

app.get('/', (req, res) => {
 res.type('html')
 res.status(200).send('<h1>Hello World<h1>')
})

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

Run index.js.

Open the url ‘http://localhost:3000/’ in browser, you can see below message.

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