req.baseUrl The URL path on which a router instance was mounted. The req.baseUrl property is similar

router.route(path) Returns an instance of a single route which you can then use to handle HTTP verbs with optional middleware. Use router

express.static(root, [options]) This is the only built-in middleware function in Express. It serves static files and is based on

app.mountpath The app.mountpath property contains one or more path patterns on which a sub-app was mounted.

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

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

To serve static files such as images, CSS files, and JavaScript files, use the express.static built-in middleware function in Express. Pass

This is essentially going to be the simplest Express app you can create. It is a single file app — not what you’d get if you use the

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

app.engine(ext, callback) Registers the given template engine callback as ext. By