Express Web Application Development

HTTP response in Express

Now that we have covered the basics of HTTP response in general, let's find out if it works in Express.

By now, we already know how a simple HTTP response can be generated in Express—by setting up a route and a handler for it:

app.get('/', function(req, res) {
  res.send('welcome');
});

Let's examine the response for this response.

Note

Express can send an HTTP response using one of its response methods: res.send(), res.json(), res.jsonp(), res.sendfile(), res.download(), res.render(), or res.redirect(). If none of them is called, the request will be left hanging till the connection times out.

If more than one response methods are specified in a route handler, only the first method will take effect, the rest will generate non-fatal, ...