'View Express JS response headers?

If I need to see the incoming request headers I use: req.headers.

I need to see the list of all headers that will be in the response.

res.headers is undefined.

I know I can set response headers: res.header('', '').

How do I view the response headers..?

javascript express

Solution 1:^[1]

Thanks to @nem035.

Response headers: res.header()._headers

Solution 2:^[2]

Also:

res.get('Content-Type');
// => "text/plain"
https://expressjs.com/en/api.html#res.get

and, confusingly, lowercase is fine:

res.get('content-type');
// => "text/plain"

res.getHeaders()['content-type']
// => "text/plain"

Solution 3:^[3]

You Can This Method ...

/* ----------------------- Get Response Header By Name ---------------------- */
/* res.getHeader('Put Header Name Here'); */
/* For Example */
res.getHeader('x-powered-by');

This Method Help You To Get Response Header Name

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	Community
Solution 2	ptim
Solution 3	Milad Fathy

'View Express JS response headers?

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Sources

Related Questions

Solution 1:^[1]

Solution 2:^[2]

Solution 3:^[3]