node.js

1. Node.js
Easy, Scaleable and Fast

2. The new cool kid in town
Java, Php, Rails and now Node.js

3. So, Why Node?

4. Cause Its fast

5. Fast mean
Event-Driven
Non-Blocking I/O
Lightweight
Efficient

6. Cause Its cool

7. Cool mean
Everyone to use it so its super easy to find people who
will want to join you

8. Scalable
Node.js is the perfect solution for perfect for data-intensive
real-time applications that run across distributed devices.

9. an example
(CallBack)
result = query( "select smurfs from some_mushroom" );
// twiddle fingers
go_do_something_with_result( result );
query( statement: "select smurfs from some_mushroom", callback:
go_do_something_with_result() );

10. an example
(Events)
var events = require('events');
var eventEmitter = new events.EventEmitter();
var ringBell = function ringBell()
{
console.log('ring ring ring');
}
eventEmitter.on('doorOpen', ringBell);
eventEmitter.emit('doorOpen');

11. an example
(Events)
why we want to use event
1.
dry
2.
organize
3.
callback
4.
readable