Send JSON response.
Examples:
res.json(null);
res.json({ user: 'tj' });
res.json(500, 'oh noes!');
res.json(404, 'I dont have that');
Send JSON response with JSONP callback support.
Examples:
res.jsonp(null);
res.jsonp({ user: 'tj' });
res.jsonp(500, 'oh noes!');
res.jsonp(404, 'I dont have that');
Send a response.
Examples:
res.send(new Buffer('wahoo'));
res.send({ some: 'json' });
res.send('<p>some html</p>');
res.send(404, 'Sorry, cant find that');
res.send(404);
Set Content-Disposition header to attachment with optional filename.
Clear cookie name.
Set Content-Type response header with type through mime.lookup()
when it does not contain "/", or set the Content-Type to type otherwise.
Examples:
res.type('.html');
res.type('html');
res.type('json');
res.type('application/json');
res.type('png');
Set cookie name to val, with the given options.
Options:
maxAge max-age in milliseconds, converted to expiressigned sign the cookiepath defaults to "/"Examples:
// "Remember Me" for 15 minutes res.cookie('rememberme', '1', { expires: new Date(Date.now() + 900000), httpOnly: true });
// save as above res.cookie('rememberme', '1', { maxAge: 900000, httpOnly: true })
Transfer the file at the given path as an attachment.
Optionally providing an alternate attachment filename,
and optional callback fn(err). The callback is invoked
when the data transfer is complete, or when an error has
ocurred. Be sure to check res.headerSent if you plan to respond.
This method uses res.sendfile().
Respond to the Acceptable formats using an obj
of mime-type callbacks.
This method uses req.accepted, an array of
acceptable types ordered by their quality values.
When "Accept" is not present the first callback
is invoked, otherwise the first match is used. When
no match is performed the server responds with
406 "Not Acceptable".
Content-Type is set for you, however if you choose
you may alter this within the callback using res.type()
or res.set('Content-Type', ...).
res.format({ 'text/plain': function(){ res.send('hey'); },
'text/html': function(){
res.send('<p>hey</p>');
},
'appliation/json': function(){
res.send({ message: 'hey' });
}
});
In addition to canonicalized MIME types you may also use extnames mapped to these types:
res.format({ text: function(){ res.send('hey'); },
html: function(){
res.send('<p>hey</p>');
},
json: function(){
res.send({ message: 'hey' });
}
});
By default Express passes an Error
with a .status of 406 to next(err)
if a match is not made. If you provide
a .default callback it will be invoked
instead.
Get value for header field.
Set Link header field with the given links.
Examples:
res.links({ next: 'http://api.example.com/users?page=2', last: 'http://api.example.com/users?page=5' });
Set the location header to url.
The given url can also be the name of a mapped url, for
example by default express supports "back" which redirects
to the Referrer or Referer headers or "/".
Examples:
res.location('/foo/bar').; res.location('http://example.com'); res.location('../login'); // /blog/post/1 -> /blog/login
Mounting:
When an application is mounted and res.location()
is given a path that does not lead with "/" it becomes
relative to the mount-point. For example if the application
is mounted at "/blog", the following would become "/blog/login".
res.location('login');
While the leading slash would result in a location of "/login":
res.location('/login');
Redirect to the given url with optional response status
defaulting to 302.
The resulting url is determined by res.location(), so
it will play nicely with mounted apps, relative paths,
"back" etc.
Examples:
res.redirect('/foo/bar'); res.redirect('http://example.com'); res.redirect(301, 'http://example.com'); res.redirect('http://example.com', 301); res.redirect('../login'); // /blog/post/1 -> /blog/login
Render view with the given options and optional callback fn.
When a callback function is given a response will not be made
automatically, otherwise a response of 200 and text/html is given.
Options:
cache boolean hinting to the engine it should cachefilename filename of the view being renderedTransfer the file at the given path.
Automatically sets the Content-Type response header field.
The callback fn(err) is invoked when the transfer is complete
or when an error occurs. Be sure to check res.sentHeader
if you wish to attempt responding, as the header and some data
may have already been transferred.
Options:
maxAge defaulting to 0 (can be string converted by ms)root root directory for relative filenamesheaders object of headers to serve with filedotfiles serve dotfiles, defaulting to false; can be "allow" to send themOther options are passed along to send.
Examples:
The following example illustrates how res.sendFile() may
be used as an alternative for the static() middleware for
dynamic situations. The code backing res.sendFile() is actually
the same code, so HTTP cache support etc is identical.
app.get('/user/:uid/photos/:file', function(req, res){
var uid = req.params.uid
, file = req.params.file;
req.user.mayViewFilesFrom(uid, function(yes){
if (yes) {
res.sendFile('/uploads/' + uid + '/' + file);
} else {
res.send(403, 'Sorry! you cant see that.');
}
});
});
Set the response HTTP status code to statusCode and send its string representation as the response body.
Set header field to val, or pass
an object of header fields.
Examples:
res.set('Foo', ['bar', 'baz']); res.set('Accept', 'application/json'); res.set({ Accept: 'text/plain', 'X-API-Key': 'tobi' });
Aliased as res.header().
Set status code.
Set Content-Type response header with type through mime.lookup()
when it does not contain "/", or set the Content-Type to type otherwise.
Examples:
res.type('.html');
res.type('html');
res.type('json');
res.type('application/json');
res.type('png');
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Wrapper for the express.Response. We can use them to add properties to the response.