javascript - nodejs - hello world

nodejs - hello world

Node.JS Hello World : 20160802

Create package.json using npm

mkdir node
cd node
mkdir hello-world
cd hello-world
npm init

Fill in the answers to the utility questions.

Node.JS Hello World Console Application

Create a new file app.js

Add the following code :

console.log('Hello World!');

Console is a global module that provides simple debugging console that is similar to the one JavaScript console in web browsers.

Run the following command :

node app.js

.js extension is not mandatory, this works also :

node app

Node.JS Hello World Web Application

Create a new file web.js

Add the following code :

var http = require("http");

var port = 3000;

http.createServer(function(reqst, resp) {
    resp.writeHead(200, {'Content-Type': 'text/plain'});
    resp.end('Hello World!');

console.log('Load' + port + ' and watch the magic');

Run the following command :

node web

Load the following url in your browser :

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