how to install all needed modules in node code example
Example 1: npm install package globally
#Syntex
npm install packagename -g
#example
npm install express -g
Example 2: how to install any package in node.js
#how to install any specific package in nodejs Application
# Syntex
npm install packagename
# example:
npm install express
npm i express
#if you install globally then type
npm install express -g