koa 学习1

1.搭建环境;

npm init -f

2.出现错误

npm ERR！Windows_NT 6.1.7601

解决方法:

npm config set proxy null

npm install cnpm -g --registry=https://registry.npm.taobao.org

3.安装koa

cnpm i koa

4.下载node.exe 7.6.0 版本;

https://npm.taobao.org/mirrors/node/v7.6.0/win-x64/

5.形成app.js

const Koa = require('koa');

const app = new Koa();

app.use(async ctx => {

ctx.body = 'Hello World, New Demo';

});

app.listen(3001);