u011435776的博客

一. 什么是洋葱模型？先看????const Koa = require('koa');const app = new Koa();const PORT = 3000;// #1app.use(async (ctx, next)=>{ console.log(1) await next(); //暂停当前程序 console.log(1)});// #2app.use(async (ctx, next) => { console.log(2

中间件机制使用koa创建一个基本的 http serverconst Koa = require('koa');const http = require('http');const app = new Koa();// Create HTTP server.const server = http.createServer(app.callback());有点不太理解http....