Node.js mysql查询插入数组，但它给出了奇怪的\\“某些东西”\\

const mysql = require('mysql');

// 创建数据库连接
const connection = mysql.createConnection({
  host: 'localhost',
  user: 'root',
  password: 'password',
  database: 'mydatabase'
});

// 连接到数据库
connection.connect();

// 查询数据
connection.query('SELECT * FROM mytable', (error, results, fields) => {
  if (error) throw error;

  // 将查询结果存储在数组中
  const data = [];
  results.forEach((row) => {
    data.push(row);
  });

  console.log(data);
});

// 插入数据
const newData = { name: 'John', age: 25 };
connection.query('INSERT INTO mytable SET ?', newData, (error, results, fields) => {
  if (error) throw error;

  console.log('Data inserted successfully');
});

// 关闭数据库连接
connection.end();