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Express.Js Cheat Sheet

Lâm
・1 min read

[Request & response] Response

res.redirect('/')
res.redirect(301, '/')
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res.set('Content-Type', 'text/html')
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res.send('hi')
res.send(200, 'hi')
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res.json({ a: 2 })
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[Request & response] Request

// GET  /user/tj
req.path         //=> "/user/tj"
req.url          //=> "/user/tj"
req.xhr          //=> true|false
req.method       //=> "GET"
req.params
req.params.name  //=> "tj"
req.params[0]
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// GET /search?q=tobi+ferret
req.query.q // => "tobi ferret"
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req.cookies
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req.accepted
// [ { value: 'application/json', quality: 1, type: 'application', subtype: 'json' },
//   { value: 'text/html', quality: 0.5, type: 'text',subtype: 'html' } ]
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req.is('html')
req.is('text/html')
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req.headers
req.headers['host']
req.headers['user-agent']
req.headers['accept-encoding']
req.headers['accept-language']
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Helpers

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

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

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

app.get('env')
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Settings

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

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

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

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