如何将数据(字符串)从我的html发送到我的服务器(node或express)，并使用它执行某些功能？

<form action="/submit" method="POST">
  <input type="text" name="data" />
  <input type="submit" value="Submit" />
</form>

const express = require('express');
const app = express();

// 处理POST请求
app.post('/submit', (req, res) => {
  const data = req.body.data; // 获取提交的数据
  // 执行某些功能
  // ...
  res.send('Data received and processed successfully!');
});

app.listen(3000, () => {
  console.log('Server is running on port 3000');
});

const bodyParser = require('body-parser');

// 解析POST请求的数据
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());