GUMZ ExPress » Node JS

Creating HTTP Server with NodeJS

Gumz — Wed, 28 Nov 2012 13:45:59 +0000

Assuming that you already installed NodeJS in your system, let’s begin with creating new myhttpserver.js. Then insert the following code in myhttpserver.js:

var http = require('http');
var server = http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/html'});
  res.write("");
  res.write("");
  res.write("");
  res.write("My HTTP Server");
  res.write("");
  res.write("");
  res.write("Hello World!");
  res.write("");
  res.write("");
  res.end();
});
server.listen(8080);
console.log('Server listens at port 8080');

We now have a basic code to start our server. By this time we created our server to return “Hello World!” for every request. To start our server, in the command line type in…

node myhttpserver.js

If everything works correctly, we will see a message that our server is listening. Then, the next thing to do is to launch our web browser and access our server through the following address

http://localhost:8080 or http://127.0.0.1:8080

Creating HTTP Server with NodeJS is a post from: GUMZ Ex Press - Technology Updates

Tags Under: http server, nodejs

Javascript Simple Object

Gumz — Wed, 12 Oct 2011 13:31:04 +0000

Unlike PHP wherein you will first define a class and to create a new object, and you will then instantiate an instance of that particular class. But in javascript what causes confusion at first is that any function can also be instantiated as an object.

How it works:

function User(name){
	this.name = name;
}

var Me = new User("James");

alert(Me.name) //return "James"

var You = new User("Visitor");

alert(You.name) //return "Visitor"

This is only the beginning of understanding how javascript works and it’s difference from other languages. The language of Nodejs.

Javascript Simple Object is a post from: GUMZ Ex Press - Technology Updates

Tags Under: javascript, nodejs

Convert Javascript Date To MySQL Date

Gumz — Mon, 03 Oct 2011 13:52:57 +0000

I have been exploring Nodejs for past weeks. I can say that it uses different technique that I used to know from other programming languages. I have a little experience with javascript programming as well as the nodejs. And Nodejs encourage me to explore more on javascript. My created application involves with the Nodejs and MySQL database, especially the datetime datatype. This javascript code comes very handy and easily converts javascript date to MySQL datetime.


function twoDigits(d) {
    if(0 <= d && d < 10) return "0" + d.toString();
    if(-10 < d && d < 0) return "-0" + (-1*d).toString();
    return d.toString();
}

Date.prototype.toMysqlFormat = function() {
    return this.getUTCFullYear() + "-" + twoDigits(1 + this.getUTCMonth()) + "-" + twoDigits(this.getUTCDate()) + " " + twoDigits(this.getHours()) + ":" + twoDigits(this.getUTCMinutes()) + ":" + twoDigits(this.getUTCSeconds());
};

var MyDate = new Date();
MyDate.toMysqlFormat(); //return MySQL Datetime format

Hope it helps you as it helped me.

Convert Javascript Date To MySQL Date is a post from: GUMZ Ex Press - Technology Updates

Tags Under: javascript, nodejs

Installing Nodejs and NPM Without Using Sudo in Ubuntu 10.04

Gumz — Sun, 25 Sep 2011 07:59:20 +0000

I made fresh install of Ubuntu to test Nodejs in linux platform. For people curios about what Nodejs is, check this out http://en.wikipedia.org/wiki/Nodejs. I picked Ubuntu since it is widely available and is free. This guide will be quick and for the purpose as my future reference. This series code of taken from gist: 579814 and additional code from stackoverflow to prevent the error that I also I encountered regarding Node.js could not configure a cxx compiler.

mkdir ~/local
echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bashrc
. ~/.bashrc

sudo apt-get install build-essential
sudo apt-get install libssl-dev

git clone git://github.com/joyent/node.git
cd node
./configure --prefix=~/local
make install
cd ..

git clone git://github.com/isaacs/npm.git
cd npm
make install

Hope this help you as it helps me.

Installing Nodejs and NPM Without Using Sudo in Ubuntu 10.04 is a post from: GUMZ Ex Press - Technology Updates

Tags Under: install nodejs and npm

Reliable Node.js Installation on Ubuntu 10.04

Gumz — Fri, 09 Sep 2011 16:27:35 +0000

I have been looking for decent tutorials on installing node.js specifically on Ubuntu 10.04. And been into forums where there people have a lot of ideas regarding this matter. I you happen to pass by looking for similar topic around the net. Here is what I can recommend. Much easier than what you think.

Run terminal and Type In:

sudo apt-get install python-software-properties sudo add-apt-repository ppa:chris-lea/node.js sudo apt-get update sudo apt-get install nodejs

Reliable Node.js Installation on Ubuntu 10.04 is a post from: GUMZ Ex Press - Technology Updates

Tags Under: Node.js Installation, Nodejs on Ubuntu10.04