js如何发送邮箱

npm install nodemailer

const nodemailer = require('nodemailer');

// 创建一个SMTP传输对象
let transporter = nodemailer.createTransport({
    host: 'smtp.example.com', // SMTP服务器地址
    port: 587, // 端口
    secure: false, // true for 465, false for other ports
    auth: {
        user: 'your-email@example.com', // 你的邮箱地址
        pass: 'your-email-password' // 你的邮箱密码或应用密码
    }
});

// 设置邮件选项
let mailOptions = {
    from: '"Sender Name" <sender@example.com>', // 发件人
    to: 'recipient@example.com', // 收件人
    subject: 'Hello ✔', // 主题
    text: 'Hello world?', // 纯文本内容
    html: '<b>Hello world?</b>' // HTML内容
};

// 发送邮件
transporter.sendMail(mailOptions, (error, info) => {
    if (error) {
        return console.log(error);
    }
    console.log('Message sent: %s', info.messageId);
});

<form id="emailForm">
    <input type="email" id="to" placeholder="Recipient's email" required>
    <textarea id="message" placeholder="Your message" required></textarea>
    <button type="submit">Send Email</button>
</form>

<script>
document.getElementById('emailForm').addEventListener('submit', function(event) {
    event.preventDefault();
    const to = document.getElementById('to').value;
    const message = document.getElementById('message').value;

    fetch('/send-email', {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json'
        },
        body: JSON.stringify({ to, message })
    }).then(response => response.json())
      .then(data => console.log(data))
      .catch(error => console.error('Error:', error));
});
</script>

app.post('/send-email', (req, res) => {
    const { to, message } = req.body;
    // 使用Nodemailer或第三方API发送邮件
    // ...
    res.json({ success: true });
});