智慧会务新年优惠活动

// 使用WebSocket实现实时签到通知
const WebSocket = require('ws');
const wss = new WebSocket.Server({ port: 8080 });

wss.on('connection', function connection(ws) {
  ws.on('message', function incoming(message) {
    console.log('received: %s', message);
    // 广播签到信息给所有连接的客户端
    wss.clients.forEach(function each(client) {
      if (client.readyState === WebSocket.OPEN) {
        client.send(message);
      }
    });
  });
});

// 客户端代码
const socket = new WebSocket('ws://localhost:8080');

socket.onopen = function() {
  console.log('Connected to WebSocket server');
};

socket.onmessage = function(event) {
  console.log('Received message: ' + event.data);
};

// 签到按钮点击事件
document.getElementById('checkInButton').addEventListener('click', function() {
  socket.send('User has checked in');
});