Nodejs

You can use following links to download prerequisite softwares to use Nodejs:

1. Node.js - https://nodejs.org/en/
2. Visual Studio Code - http://code.visualstudio.com/
3. MongoDB - https://www.mongodb.com/
4. MongoChef - http://3t.io/mongochef/download/core/platform
5. Git for windows - https://git-scm.com/download/win
6. GitHub Desktop - https://github-windows.s3.amazonaws.com/GitHubSetup.exe (https://desktop.github.com)

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Step 1 install nodejs

Step 2 Command: install npm

Step 3 Command: npm install lite-server --global

step 4 Command: lite-server

If you are having problem in running lite-server command please run these three commands then run lite-server.

npm install -g concurrently

npm install -g lite-server

npm install -g typescript

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#Hello.js will be execute in command prompt

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#How to commit files to github

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#This program used for Calculating Execution Times in JavaScript with console.time and console.timeEnd

console.time("sarvesh");
for (var i = 0; i < 5; i++) {
    (function(i) {
        setTimeout(function() {
            console.log(i);
        }, i);
    })(i);
}
console.timeEnd("sarvesh");

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or

var startTime = new Date().getTime(); 
//your code;
 var endTime = new Date().getTime(); 
 console.log("duration [ms] = " + (endTime - startTime));

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##NPM

npm --version

npm install --global --production npm-windows-upgrade

npm-windows-upgrade

npm init

##Typing

npm install -g typings

typings install dt~node --global

##ESlint

npm install -g eslint

eslint --init

##TypeScript

npm install -g typescript

npm install -g typescript@next

tsc -w main.ts

##lite-server System-wide, using: npm install --global lite-server

Locally to n NPM project, using npm install lite-server --save-dev

#To run:

lite-server

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##Exress

npm init

npm install express --save

npm install -s typings

var express = require('express');
var app = express();

app.get('/', function(req, res) {
    res.send('Express in nodejs ');
})

app.set('port', process.env.PORT || 3001);

var server = app.listen(3001, function() {
    var host = server.address().address;
    var port = server.address().port;

    console.log("URL listening at http://localhost:", port);
})

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##Useful command NPM

npm install --save-dev browser-sync

npm install --save-dev browserify

npm install --save-dev chai

npm install --save-dev gulp

npm install --save-dev gulp-istanbul

npm install --save-dev gulp-mocha

npm install --save-dev gulp-sourcemaps

npm install --save-dev gulp-tslint

npm install --save-dev gulp-typescript

npm install --save-dev gulp-uglify

npm install --save-dev run-sequence

npm install --save-dev tslint

npm install --save-dev typescript

npm install --save-dev vinyl-buffer

npm install --save-dev vinyl-source-stream

Express - Node.js web application framework

npm install express --save

npm install body-parser --save

npm install cookie-parser --save

npm install multer --save
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##nodemon

nodemon will watch the files in the directory in which nodemon was started, and if any files change, nodemon will automatically restart your node application.

install golably

 npm install -g nodemon

install locally: npm install --save-dev nodemon

run app :    nodemon server.js

run on port:  nodemon ./server.js localhost 3001