express middleware

[magicdawn]

express的各种中间件......

[magicdawn]

body-parser

之前的做法

bodyParser('json') // 之类的 被deprecated

现在的是

bodyParser.json() // application/json
bodyParser.urlencoded({ extend: true }) // application/x-www-form-urlencoded
// 默认的 extend 默认值被deprecated, 提供extend 得到类似json的体验,否则, key-value对的value只能是string or array

[magicdawn]

express-state

expose(hello,world)

(function (root) {
// -- Data --
root.world = "hello";
}(this));

设置 state namespace 后

(function (root) {
// -- Data --
root.MT || (root.MT = {});
root.MT.world = "hello";
}(this));

[magicdawn]

express req, res

• 1在 middleware 中的 req, res
• 2app.request / app.response
• 3require('express/lib/request') / response

1.__proto__ = 2 https://github.com/expressjs/express/blob/master/lib/middleware/init.js#L28-L29
2.__proto = 3 https://github.com/expressjs/express/blob/master/lib/express.js#L44-L45