03.Node – Start With Example.

Node – Start With Example.

Steps,

1. Make a folder – mkdir   folderName  (my folder name is nodeExample)
2. Go to indide the folder – cd nodeExample
3. Create a javaScript file inside nodeExample folder – example.js
4. Copy and paste bellow code and save.
5. Run js file (server).  D:\OTHER\nodeExample\node example.js

1st Example

const http = require('http');

const hostname = '127.0.0.1';

const port = 3000;

const server = http.createServer((req, res) => {

  //res.writeHead(200,{'Content-Type' : 'text/plain'});

  res.statusCode = 200;

  res.setHeader('Content-Type', 'text/plain');

  res.end('Hello World\n');

});

server.listen(port, hostname, () => {

  console.log(`Server running at http://${hostname}:${port}/`);

});

Node Module are the way to import already build code I node.js.(like java package or class,library)

const http = require('http');

In here, require is similar to import in java, include in c++.

Anonymous Function, Billow both are same.

var func = function(req,res){}

http.createServer(func);

http.createServer(function(req,res){});

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