Programming for beginners: node.js: http.createServer([options][, requestListener]): Building Hello World web application

http.createServer([options][, requestListener])

This method returns a new instance of http.Server.

Below table summarizes the arguments of createServer method.

Argument

Type

Description

options

Object

Below table summarizes different options supported by this method.

Option	Type	Description
IncomingMessage	http.IncomingMessage	Specifies the IncomingMessage class to be used. Default value is IncomingMessage.
ServerResponse	http.ServerResponse	Specifies the ServerResponse class to be used. Default: value is ServerResponse.

requestListener

Function

This function is called on every request.

Find the below working application.

HelloWorld.js

var http = require('http');

var server = http.createServer((request, response) => {
    response.writeHead(200, {
        'Content-Type': 'text/html'
    });

    var dataToWrite = '<html><head><title>Hello World</title></head><body>' +
        '<h1>Hello World, Welcome to node.js programming</h1>' +
        '</body></html>';

    response.end(dataToWrite);
});

server.listen(9000);

console.log('Server started and listening on port 9000');

Open browser and hit the url ‘http://localhost:9000/’, you can see below kind of screen.

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Programming for beginners

Friday 19 October 2018

node.js: http.createServer([options][, requestListener]): Building Hello World web application

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