ExpressJS

Router

• Creates an instance of of express
• Used to make our servers more flexible/modular

Route Middleware

• Used to do something before a request is processed
• Ex: Parse data, adding response heads, authenticate user/password
• Order of operations matter. Things happen top to bottom

Conclusion

• Use express.Router() multiple times to define groups of routes
• Apply the express.Router() to a section of our site using app.use()
• Use route middleware to process requests
• Use route middleware to validate parameters using .param()
• Use app.route() as a shortcut to the Router to define multiple requests on a route