个性化网约车系统双11促销活动

document.addEventListener('DOMContentLoaded', function() {
    const today = new Date();
    const novemberEleventh = new Date(today.getFullYear(), 10, 11);

    if (today.getMonth() === novemberEleventh.getMonth() && today.getDate() === novemberEleventh.getDate()) {
        const popup = document.createElement('div');
        popup.innerHTML = `
            <div style="background-color: #ffcc00; padding: 20px; text-align: center;">
                <h2>双11狂欢节</h2>
                <p>领取您的专属优惠券！</p>
                <button onclick="redeemCoupon()">立即领取</button>
            </div>
        `;
        document.body.appendChild(popup);
    }
});

function redeemCoupon() {
    alert('恭喜您领取成功！');
    // 这里可以添加实际的优惠券领取逻辑
}

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

app.use(bodyParser.json());

app.post('/redeem-coupon', (req, res) => {
    const userId = req.body.userId;
    // 这里可以添加实际的优惠券发放逻辑
    console.log(`User ${userId} redeemed a coupon.`);
    res.status(200).send({ message: 'Coupon redeemed successfully!' });
});

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