Koa2 - 爱码网

安装

yarn add koa

代码

Koa的核心代码就三行

const app = new Koa()

app.use(middleware)

app.listen(3000)

const Koa = require('koa')
const app = new Koa()

app.use(async (ctx, next) => {
  ctx.body = 'Hello World!'
})

app.listen(8080)

至此一个简单的服务器运行成功。

koa脚手架

npm install -g koa2-generator

koa2 koa-demo

编写一个静态页面

module.exports = `
  <!DOCTYPE html>
  <html>
    <head>
      <meta charset="utf-8">
      <meta name="viewport" content="width=device-width, initial-scale=1">
      <title>Koa Server HTMl</title>
      <link href="https://cdn.bootcss.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.bootcss.com/jquery/3.2.0/jquery.min.js"></script>
      <script src="https://cdn.bootcss.com/bootstrap/4.0.0-beta.2/js/bootstrap.bundle.min.js"></script>
    </head>
    <body>
      <div class="container">
        <div class="row">
          <div class="col-md-8">
            <h1>Hi Susan</h1>
            <p>This is a test</p>
          </div>
          <div class="col-md-4">
            <p>测试静态 HTML 页面</p>
          </div>
        </div>
      </div>
    </body>
  </html>

`

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