Nodejs

• Java script beyond browser

• Global Object - __dirname, __filename, console, setTimeoutrequire , module.Exports.

• In built Core Module

  • events - EventEmitter, on, emit

  • util - inherits, inspect

  • fs - readFileSync, writeFileSync, readFile, writeFile

• Package

  • EJS - Embedded Java Script - Templates

  • Handlebars - html template - Tutorial - Try Handlebars.js in your web browser

  • xmlTojson - client side

  • xml2js - Server side

  • Express - Web Application Framework for server side scripting

  • Browserify - package node module for browser

• Tool

  • online playground - runkit

node -v

Check node version

nmp -v

Check npm version

npm install

Downloads all the dependencies listed in package.json into node_modules folder