What is the difference between Express.js and Node.js?

Express.js - Interview Questions

Node.js is a platform for building the i/o applications which are server-side event-driven and made using JavaScript.

Express.js is a framework based on Node.js for which is used for building web-application using approaches and principles of Node.js.event-driven.

Feature	Express.js	Node.js
Usage	It is used to build web-apps using approaches and principles of Node.js.	It is used to build server-side, input-output, event-driven apps.
Level of features	More features than Node.js.	Fewer features.
Building Block	It is built on Node.js.	It is built on Google’s V8 engine.
Written in	JavaScript	C, C++, JavaScript
Framework/Platform	Framework based on Node.js.	Run-time platform or environment designed for server-side execution of JavaScript.
Controllers	Controllers are provided.	Controllers are not provided.
Routing	Routing is provided.	Routing is not provided.
Middleware	Uses middleware for the arrangement of functions systematically server-side.	Doesn’t use such a provision.
Coding time	It requires less coding time.	It requires more coding time.