isaacs

# Hello, and welcome to makefile basics.
#
# You will learn why `make` is so great, and why, despite its "weird" syntax,
# it is actually a highly expressive, efficient, and powerful way to build
# programs.
#
# Once you're done here, go to
# http://www.gnu.org/software/make/manual/make.html
# to learn SOOOO much more.

dlutwuwei

title: express4.2源码解析 date: 2014-05-18 15:00:50 categories: express tags: [nodejs, node, js, express]

express是nodejs平台上一个非常流行的框架，4.2.0是最新的版本，相比3.x版本优化了代码和api，去除了connect模块，自己实现了一个router组件，实现http请求的顺序流程处理，去除了很多绑定的中间件，使代码更清晰。

##1.使用express 如何使用express在官网有很好的讲解，只用experssjs实例app的几个函数，就可以构建构建web程序。

azat-co

var express = require('express')
  , mongoskin = require('mongoskin')

var app = express()
app.use(express.bodyParser())

var db = mongoskin.db('localhost:27017/test', {safe:true});

app.param('collectionName', function(req, res, next, collectionName){
  req.collection = db.collection(collectionName)