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Work with HTTP headers in Express

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Learn how to access and change HTTP headers using Express

Access HTTP headers values from a request

You can access all the HTTP headers using the Request.headers property:

app.get('/', (req, res) => {

Use the Request.header() method to access one individual request header’s value:

app.get('/', (req, res) => {

Change any HTTP header value for a response

You can change any HTTP header value using Response.set():

res.set('Content-Type', 'text/html')

There is a shortcut for the Content-Type header, however:

// => 'text/html'

// => 'text/html'

// => 'application/json'

// => 'application/json'

// => image/png:
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