The document discusses the usage of JavaScript outside the browser, particularly through Node.js, which is built on Google's V8 engine and supports event-driven, non-blocking I/O. It highlights key features and code examples for setting up basic server applications using Node.js and Express, as well as interacting with MongoDB through native drivers and Mongoose. Additional code snippets demonstrate creating servers, handling requests, and performing database operations.

1. e
Jean Carlo Nascimento aka
SUISSA

6. @osuissa
about.me/suissa
github.com/suissa
nosql.techinsider.com.br
javascript.techinsider.com.br

8. ● É um ambiente de execução para usar JavaScript
fora do navegador
● Linha de comando + console interativo
● Utiliza o engine de JavaScript Google V8
● I/O orientada a eventos (modo assíncrono)

9. > function agora() {
... var dt = Date().slice(16,24);
... console.log(dt);
... }
undefined
> agora();
13:50:17
undefined
>

18. Terminologia
SQL RDBMS
DATABASE
TABLE
ROWS
QUERY
INDEX
PARTITION
MongoDB
DATABASE
COLLECTION
JSON DOCUMENT
QUERY
INDEX
SHARD

23. Talk is cheap. Show me the
code.

24. Node.js - Hello World
var http = require('http');
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end('Hello Worldn');
}).listen(1337, '127.0.0.1');
console.log('Server running at http://127.0.0.1:1337/');

25. Node.js - Wassup World
var http = require('http');
var fs = require('fs');
var index = fs.readFileSync('index.html');
http.createServer(function (req, res) {
res.writeHead(200, {'Content-Type': 'text/html});
res.end(index);
}).listen(3000);

26. Node.js - Rotas

27. express
http://expressjs.com/

28. Express
● Routing robusto
● Redirecionador para Helpers
● Dynamic View Helpers
● Integração View Template Engine
● Content negotiation (RESTFul)
● Application mounting
● Focado em alta performance
● Renderizador de Views
● Suporte a Partials
● Configuração baseado no ambiente do sistema
operacional
● Desenvolvido com a base no Middleware Connect

29. Express - Hello World
var express = require('express');
var app = express.createServer();
app.get('/', function(req, res){
res.send('Hello World');
});
app.listen(3000);

31. jade
http://jade-lang.com/

33. mongodb native
https://github.com/mongodb/node-mongodb-
native

34. MongoDB Native
var mongo = require('mongodb');
var db = new mongo.Db('test', new mongo.Server
('localhost',27017, {safe: true}), {});
db.open(function(err, client){
client.createCollection("docs", function(err, col) {
client.collection("docs", function(err, col) {
for (var i = 0; i < 10; i++) {
col.insert({c:i}, function(){
console.log("inserindo: " + i);
});
}
});
});
});

36. mongoose
https://github.com/LearnBoost/mongoose

37. Mongoose
var mongoose = require('mongoose'),
Schema = mongoose.Schema;
var db = mongoose.connect('mongodb://localhost/db');
var User = new Schema({
first_name: String,
last_name: String
});
var UserModel = mongoose.model('User', User);

38. Mongoose
var record = new UserModel();
record.first_name = 'Jean';
record.last_name = 'Nascimento';
record.save(function (err) {
UserModel.find({}, function(err, users) {
for (var i=0, counter=users.length; i < counter; i++)
{
var user = users[i];
console.log( "User => _id: " + user._id + ",
first_name: " + user.first_name + ", last_name: " + user.
last_name );
}
});
});