Socket.io如何发送JavaScript对象

npm install socket.io

const express = require('express');
const app = express();
const server = require('http').createServer(app);
const io = require('socket.io')(server);

server.listen(3000, () => {
  console.log('Server listening on port 3000');
});

io.on('connection', (socket) => {
  const user = {
    id: 1,
    name: 'John Doe',
    email: 'john.doe@example.com',
  };

  socket.emit('user-info', user);
});

  const socket = io('http://localhost:3000');

  socket.on('user-info', (user) => {
    console.log('Received user info:', user);
  });
</script>