cuipengfei

var express = require('express')
var app = express()

app.use(express.static(process.argv[3]));
app.listen(process.argv[2])

cuipengfei

var path = require('path')
var express = require('express')
var app = express()

app.use(require('stylus').middleware(process.argv[3]));
app.use(express.static(process.argv[3]));

app.listen(process.argv[2])

cuipengfei

var express = require('express')
var app = express()

app.put('/message/:id', function (req, res) {
    var id = req.params.id
    var str = require('crypto')
        .createHash('sha1')
        .update(new Date().toDateString().toString() + id)
        .digest('hex')
    res.send(str)

cuipengfei

var express = require('express')
var app = express()

app.get('/search', function (req, res) {
    res.send(req.query)
})

app.listen(process.argv[2])

cuipengfei

var express = require('express')
var fs = require('fs')

var app = express()

app.get('/books', function (req, res) {
    fs.readFile(process.argv[3], function (err, data) {
        var jsonFromFile = JSON.parse(data.toString());
        res.json(jsonFromFile)
    })

cuipengfei

module.exports = function countWords(arr) {
	return arr.reduce(function(prev, curr) {
		prev[curr] = prev[curr] + 1 || 1
		return prev
	}, {})
}

cuipengfei

module.exports = function reduce(arr, fn, initial) {
	function justDoOne(index, value) {
		if (index >= arr.length) {
			return value
		}
		return justDoOne(index + 1, fn(value, arr[index]))
	}
	
	return justDoOne(0, initial)
}

cuipengfei

  function duckCount() {
    return Array.prototype.slice.call(arguments).filter(function(obj) {
      return Object.prototype.hasOwnProperty.call(obj, 'quack')
    }).length
  }

  module.exports = duckCount

cuipengfei

  module.exports = function(namespace) {
    return console.log.bind(console, namespace)
  }

cuipengfei

module.exports = function arrayMap(arr, fn) {
    return arr.reduce(function (acc, current) {
        acc.push(fn(current))
        return acc
    }, [])
}