BackToSchool @ True Vision

1. Node.JS
Server side javascript

2. Intro

Good old javascript

But server side

Fully asynchronus

“Buzz” technology

3. Use cases

Real time web applications

Messaging

File download

Anything that spends lot of time waiting for
something

4. Differences from Web browser

CommonJS – http://wiki.commonjs.com

Modules

Npm – http://www.npmjs.org

File system, external process and network API

5. Programming paradigm

Non blocking operations

Functional programming

Lazy – doing only when needed

Event based

Do something when something happens

6. Example
HTTP server, which
serves movie.avi from
current directory

7. Modules

require();

exports functions and
variables from from
files module.exports

8. callbacks

most common code
construct

functions are
variables

non-blocking

“this” magick
– var self = this; trick

9. Thank you!