How to store the data from the front end into mysql with node

purpose: use nodejs to insert the data returned from the front end into the table in mysql

Code logic:
-sharp-sharp1, front page

<!DOCTYPE html>
<html lang="en">

<head>
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <meta http-equiv="X-UA-Compatible" content="ie=edge">
 <title>Document</title>
 <style>
     * {
         padding: 0;
         margin: 0;
     }
 </style>
</head>

<body>
 <!-- <form action=""> -->
 <label for="id">id</label>
 <input type="text" name="name" id="id">
 <label for="name"></label>
 <input type="text" id="name">
 <label for="price"></label>
 <input type="text" id="price">
 <input type="submit" value="" id="submit">
 <!-- </form>  -->
 <input type="file" name="" id="" accept="image/*">
</body>
<script src="http://code.jquery.com/jquery-2.1.1.min.js"></script>
<script>
  
 $("-sharpsubmit").click(() => {
     $.ajax({
         type: "post",
         url: "http://localhost:3001/",
         data: {
             id: $("-sharpid").val(),
             name: $("-sharpname").val(),
             price: $("-sharpprice").val()
         },
         datatype: "json",
         success: function (res) {
             console.log(res)
         },
         error: function (err) {
             console.log(err)
         }
     })
 })
</script>

</html>

< H2 > 2, backend page < / H2 >

connction.js

var connction = {};

connction.mysql = {

    host: "localhost", //

    user: "root", //

    password: "******.", // 

    database: "T2" //

} //

////////////////////

module.exports = connction; //module.exports

Interface index.js

var express = require("express");
var router = express.Router();
var mysql = require("mysql");
var sql01 = require("./../connction");

// DBConfig.jsMySQL
var pool = mysql.createPool(sql01.mysql);
// var $sql = $mysql.createConnection(sql01.mysql) //        mysql
// $sql.connect()

// JSON
// var responseJSON = function (res, ret) {
//   if (typeof ret === "undefined") {
//     res.json({
//       code: "-200",
//       msg: ""
//     });
//   } else {
//     res.json(ret);
//   }
// };
// 
router.post("/", function (req, res, next) {
  // console.log(req )
  //  
  pool.getConnection(function (err, connection) {
    //   
    
    var param =req.body;
    var addSql = "insert into goods(id,name,price) values (?,?,?)";
    var hh = [param.id,param.name,param.price];
    console.log(param) //
    //   
    connection.query(addSql,hh, function (err, result) {
      console.log(result)
      if (result) {
        result = {
          code: 200,
          msg: ""
        };
      }

      // json     
      // responseJSON(res, result);

      //   
      connection.release();

    });
  });
});

/* GET home page. */
router.get("/", function (req, res, next) {
  res.send("halll")
});
router.get("/login", function (req, res, next) {
  res.send("this is  index/login page")
})
module.exports = router;

How to store the data from the front end into mysql with node

connction.js

Interface index.js

now you can get the data passed in from the front end, but the data you read cannot be written to the table specified in mysql.