How can I send back response headers with Node.js / Express?

node.js express response-headers
Shamoon picture Shamoon · Oct 6, 2011 · Viewed 99.1k times · Source

I'm using res.send and no matter what, it returns status of 200. I want to set that status to different numbers for different responses (Error, etc)

This is using express

Answer

Bernardo Dal Corno picture Bernardo Dal Corno · Jun 24, 2016

For adding response headers before send, you can use the setHeader method:

response.setHeader('Content-Type', 'application/json')

The status only by the status method: 

response.status(status_code)

Both at the same time with the writeHead method:

response.writeHead(200, {'Content-Type': 'application/json'});

Related questions

Express.js - How to check if headers have already been sent?

I am writing a library which may set headers. I want to give a custom error message if headers have already been sent, instead of just letting it fail with the "Can't set headers after they are sent" message given …

Read More
Writing files in Node.js

I've been trying to find a way to write to a file when using Node.js, but with no success. How can I do that?

Read More
How to get GET (query string) variables in Express.js on Node.js?

Can we get the variables in the query string in Node.js just like we get them in $_GET in PHP? I know that in Node.js we can get the URL in the request. Is there a method to …

Read More