I. What is Express.js?
Express.js is a server-side or back-end web framework based on the core Node.js http module and Connect components.
Express helps us easily manage our routing, requests, server-side logic and responses. It also makes our code easier to read, update and extend.
II. Why using Express?
- Deliver static content
- Construct an API
- Connect to various data sources (with additional plugins)
- Support MVC (Model-View-Controller)
- Make building web apps with Node.js much easier
III. What to know before starting
- Arrow functions
- High-order array methods (forEach, map, filter)
- Node.js & NPM
- HTTP status codes