Assuming you’ve already installed Node.js, create a directory to hold your application, and make that your

Events

req.acceptsEncodings(encoding [, ...]) Returns the first accepted encoding of the specified encodings, based on the request’s Accept-Encoding

Define error-handling middleware functions in the same way as other middleware functions, except error-handling functions have four arguments instead of three: (err,

router.use([path], [function, ...] function) Uses the specified middleware function or functions, with optional mount path path

req.fresh Indicates whether the request is “fresh.” It is the opposite of req.stale. It is true

res.status(code) Sets the HTTP status for the response. It is a chainable alias of Node’s

res.sendStatus(statusCode) Sets the response HTTP status code to statusCode and send its string representation as the response

How should I structure my application? There is no definitive answer to this question. The answer

res.jsonp([body]) Sends a JSON response with JSONP support. This method is identical to res.json(), except that it opts-in to JSONP