在页面发送请求，然后打印，发现没办法给ajax返回值，必须写res.end(JSON.stringify(数据))页面才可以接收到，但是我写一个单纯的字符串也接收不到，必须使用JSON.stringify()这样写才能打印出来
node部分
```html
const http = require('http')
const fs = require('fs')
let statics = require('./static')
let upload = require('./upload')
http.createServer((req, res) => {
if (req.url == '/favicon.ico') {
return
}
let myurl = new URL(req.url, 'http://localhost:3000')
console.log(myurl.pathname)
if (myurl.pathname == '/upload') {
upload(req, res)
} else if (myurl.pathname == '/show') {
fs.readdir('./data', function (err, data) {
let response = {
msg: 'success',
data: data
}
res.end(JSON.stringify(response))
})
} else {
statics.static(req, res)
}
}).listen(3000, 'localhost')
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<h1>show</h1>
</body>
<script src="jquery.3.5.1.min.js"></script>
<script>
$.ajax({
url: "http://localhost:3000/show",
type: 'get',
dataType: 'json',
success: function(res){
console.log(res)
}
})
</script>
</html>