Express 4.x - API Reference

express() Creates an Express application. The express() function is a top-level function exported by the express module. var express = require('express') var app = express() Methods express.json([options]) This is a built-in middleware function in Express. It parses incoming requests with JSON payloads and is based on body-parser. Returns middleware that only parses JSON and only looks at requests

[nilab]

express.static(root, [options])

[bouzuya]

Routerが大きな変更かな？