res.app This property holds a reference to the instance of the Express application that is using the middleware. res

req.acceptsCharsets(charset [, ...]) Returns the first accepted charset of the specified character sets, based on the request’s Accept-Charset

res.json([body]) Sends a JSON response. This method is identical to res.send() with an object or array as the parameter. However

app.post(path, callback [, callback ...]) Routes HTTP POST requests to the specified path with the specified callback functions. For more information

Express uses the debug module internally to log information about route matches, middleware

req.originalUrl req.url is not a native Express property, it is inherited from Node’s

req.body Contains key-value pairs of data submitted in the request body. By default, it is undefined, and is populated when you

app.listen(port, [hostname], [backlog], [callback]) Binds and listens for connections on the specified host and port. This method is identical

Adding the capability to connect databases to Express apps is just a matter of loading an appropriate Node.js driver for the database in your app. This document briefly explains

Use the application generator tool, express-generator, to quickly create an application skeleton. Install express-generator