如何获取提交表单的用户电子邮件并保存

<form id="myForm">
  <input type="email" id="emailInput" placeholder="请输入您的电子邮件地址" required>
  <button type="submit">提交</button>
</form>

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

app.use(bodyParser.urlencoded({ extended: false }));

app.post('/submit-form', (req, res) => {
  const email = req.body.email;
  // 在这里将email保存到数据库或文件中
  res.send('表单提交成功！');
});

app.listen(3000, () => {
  console.log('服务器已启动');
});

from flask import Flask, request

app = Flask(__name__)

@app.route('/submit-form', methods=['POST'])
def submit_form():
    email = request.form.get('email')
    # 在这里将email保存到数据库或文件中
    return '表单提交成功！'

if __name__ == '__main__':
    app.run()

CREATE TABLE users (
  id INT AUTO_INCREMENT PRIMARY KEY,
  email VARCHAR(255) NOT NULL
);

INSERT INTO users (email) VALUES ('user@example.com');

const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true });

const userSchema = new mongoose.Schema({
  email: { type: String, required: true }
});

const User = mongoose.model('User', userSchema);

const user = new User({ email: 'user@example.com' });
user.save();