Web Application Development with MEAN

Bootstrapping ExpressJS

ExpressJS is a web server composed mainly of routes, middlewares, and views. However, since we are aiming to build a Single Page Applications (SPA), we are going to use ExpressJS as a REST endpoint and Angular's views. So from ExpressJS, we are only going to use the routes and middleware.

When the server receives a request, it goes through all the registered middlewares one by one. The middlewares are functions with three parameters; request, reponse, and next. If no error is found, it hands over the request to the next middleware in the chain. Middlewares are very diverse: they can log information, process cookies, sessions, do authentication, and so on. Similarly, routes too are functions that process requests, but they ...