cheatsheets/express.md

title: Express.js

Settings

app.set('x', 'yyy')
app.get('x') //=> 'yyy'

app.enable('trust proxy')
app.disable('trust proxy')

app.enabled('trust proxy') //=> true

Env

app.get('env')

Config

app.configure('production', function() {
  app.set...
});

Wares

app.use(express.static(__dirname + '/public'));
app.use(express.logger());

Helpers

app.locals({
  title: "MyApp",
});

Request

req.params

// GET  /user/tj
req.params.name //=> "tj"

req.params[0]

// GET /search?q=tobi+ferret
req.query.q // => "tobi ferret"

req.cookies

req.accepted
[ { value: 'application/json', quality: 1, type: 'application', subtype: 'json' },
  { value: 'text/html', quality: 0.5, type: 'text',subtype: 'html' } ]

req.is('html')
req.is('text/html')

req.path
req.xhr

Response

res.redirect('/')
res.redirect(301, '/')

res.set('Content-Type', 'text/html')

res.send('hi')
res.send(200, 'hi')

res.json({ a: 2 })