Installing Express with nodejs project dependency

1. Create project folder and open the folder using  command prompt
2. execute the following  commands
3. Create project using  npm init command

4. Now install Express in the app directory and save it in the dependencies list using :-  npm install express --save (To install Express temporarily and not add it to the dependencies list, omit the --save option)

you can see the express is added to the project dependency

5. You can install the following supporting libraries also

npm install body-parser --save

npm install cookie-parser --save

npm install multer --save

body-parser – This is a node.js middleware for handling JSON, Raw, Text and URL encoded form data.

cookie-parser – Parse Cookie header and populate req.cookies with an object keyed by the cookie names.

multer – This is a node.js middleware for handling multipart/form-data.

6. Create a sample code

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

app.get('/', function (req, res) {
   res.send('Hello World');
});

var server = app.listen(8000, function () {

  var host = server.address().address
  var port = server.address().port

  console.log("Server started and listening at http://%s:%s", host, port)

});

7 Run the server using node index.js open http://127.0.0.1:8000/ in your browser 

Done

There a node package nodemon, “Nodemon is a utility that will monitor for any changes in your source and automatically restart your server. Perfect for development”

npm install -g nodemon

Running our project with nodemon

nodemon index.js

How to use express generator for creating project https://wiki.workassis.com/nodejs-express-application-generator/