Node js & NPM

What is Node js?

Node.js is an open-source, cross-platform, back-end JavaScript runtime environment that runs on the V8 engine and executes JavaScript code outside a web browser.

What is NPM?

NPM is a shortcut for Node Package Manager. From its name it is the package manager for the Node JavaScript platform.

A package or module is a piece of code the is written by a developer like you to do a specific job. Developers create package to do repeated, and needed jobs and to abstract code needed to do such jobs.

NPM Crash Course

NPM Crash Course

Core Concepts in the video

• (⏱ 0:14) Why do we need npm?

• (⏱ 0:52) What is npm?

• (⏱ 2:14) How to install npm

• (⏱ 2:44) Which npm packages do you need?

• (⏱ 3:25) Installing global and local packages

• (⏱ 4:46) What does the package.json file do?

• (⏱ 5:59) Dealing with npm package dependencies

• (⏱ 7:55) How semantic versioning works in npm

• (⏱ 12:41) What does the package-lock.json file do?

Additional Resources

• Install Node js

• NPM Official Website

• W3 Schools Node js Tutorial