New blog domain: kula.blog

By K -
It's still work in progress but new posts will be published on  https://kula.blog/ Thanks to 11ty base blog RSS is working from the start so it should be easy to add to your reader if you still use any :) If now then I hope you can sign up to the newsletter where I'll be publishing new posts and interesting articles to it from time to time. Please use  kula.blog  from now on.
Post a Comment

Node.js Beginner Introduction

By K -
What is Node.js
Short version: JavaScript engine from Chrome with modules for handle files and httpServer.
 http://nodejs.org/


In this post:

  1. Installation
  2. Cloud9 IDE
  3. Hosting
  4. Example


1: Installation
Go to http://nodejs.org/ and decide if You want stable (4.*) version or dev (5.0-pre).
Stable can be downloaded from: http://nodejs.org/#download with tar.gz format.
Dev from github.
Installation:
https://github.com/joyent/node/wiki/Installation
On my ubuntu it was pretty easy, but If You fail to install it, don't give up and check section about Cloud :)

2: Cloud
Sign up for beta at: http://cloud9ide.com/
Cloud9 IDE uses github for

  1. signup - You must have github accout
  2. checkout of project code (creation of new project via pasting github repo url)
Cloud9 IDE has some 'beta' bugs but it is usable now and can be used to develop Node.js applications.
You must be aware that Cloud9 IDE needs some specified values of host and port tu run code properly (more at the bottom).

Pros:
  • git support (command line at the bottom)
  • runs Node.js code (like in Eclipse)
  • ACE code editor
Cons:
  • Without support for npm http://npmjs.org/
  • Without npm we can use only core Node.js, without frameworks
  • I'm not sure but I was unable to find any informations about database (let me now in comments if there is)

3: Hosting:



4: Example


//Cloud9 IDE to run Node.js needs
//to start server at specified host and port
HOST = "0.0.0.0";
PORT = process.env.C9_PORT;

var http = require('http');
http.createServer(function (req, res){
    res.writeHead(200, {'Content-Type':'text/plain'});
    res.end('Hello World\n');
}).listen(PORT, HOST);

console.log('Server running at '+ HOST + ':' + PORT);

The same code from gist:



Comments

Post a Comment

Comments:

Popular posts from this blog

How to use NPM packages from private repositories on bitbucket

By K -
Image
Using Node.js you want to use NPM packages for reusable parts of the apps you create, that is a common sense. At the same time not everything makes sense as a public module unfortunately. Right now we are using Bitbucket at work for private repositories but there is a problem. How to use them as NPM modules? We do not want to publish them to the public npmjs.org but still want to have an ability to install them easily. After googling and experimenting I have found simple solution. First create new user in your organization with obscure password and give it read access to the repo. It is best to assign really obscure password but do not fool yourself. This is convenient but you must sacrifice security a bit. You should always consider how in your context that would be important. Change example from below to: user - username PASS - password of the user organization - owner of the project (you can find it in bitbucket url to your project) project - your project name "de
Read more

How to simulate slow connection (developer proxy in Node.js)

By K -
Image
Update: If you use Chrome then you can use "Throttling" so simulate slow network for all your assets. This should be easier than proxy. Toggle device mode   Choose Network type. Refresh the page https://developer.chrome.com/devtools/docs/device-mode  Proxy: For some time I wanted to use some proxy for development and testing of eg. slow internet connection, but it was hard to find something useful and free. I know there is Charles but buy it to use it at most one in a month is not for me. I started thinking about Node.js, maybe I can write proxy for me? But fortunately I found one. https://github.com/nodejitsu/node-http-proxy With this module I can write really short code to create slow server: var http = require('http'), httpProxy = require('http-proxy'); httpProxy.createServer(function (req, res, proxy) { var buffer = httpProxy.buffer(req); setTimeout(function () { proxy.proxyRequest(req, res, { host:
Read more