签到+代码js

async function signIn() {
  try {
    const response = await fetch('/signIn', {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({ userId: '123' }) // 假设用户 ID 为 123
    });

    const result = await response.json();
    if (result.success) {
      alert('签到成功！');
    } else {
      alert('签到失败，请稍后再试。');
    }
  } catch (error) {
    console.error('签到请求出错:', error);
    alert('网络错误导致签到失败。');
  }
}

const express = require('express');
const app = express();
app.use(express.json());

app.post('/signIn', (req, res) => {
  const { userId } = req.body;
  // 这里应该有数据库操作来检查和更新签到状态
  // 假设签到成功
  res.json({ success: true });
});

app.listen(3000, () => {
  console.log('服务器运行在 http://localhost:3000');
});