Javascript Socket.IO在刷新页面时执行函数两次

我用的是NodeJS、快车把和Socket.IO.我使用uuid和套接字io创建了一个简单的特性，并希望创建持久房间.因为我想以干净的方式使用它，所以我构建了控制器.我不知道这是不是一个好主意，但不知何故，当我刷新页面时，套接字控制器会执行里面的代码……这将在我的数据库中产生严重的问题.

1. I started by creating the main events in server.js file:个

const server = http.createServer(app);
const io = new Server(server);

io.on('connection', socket => {
    //User look for user and send invitation to chat
    lookForUserAndInvite(socket);

    //Rooms creation 
    createASingleRoom(socket);
});

2. Than, I sent the functions in the controller, serverside:个 这里将从客户端接收数据对象. 这是我想要存储在我的MongoDB中的对象. 另外，这个is getting executed twice

const createASingleRoom = socket => {
    socket.on('create_room', data => {
        const roomObject = {
            roomId:         uuidv4(),
            author:         data.author,
            invitedUsers:   data.invitedUsers || []
        };

        console.log('server', roomObject); //Logged this. This creates a new room each time I will refresh the page
    })
}

export default createASingleRoom;

3. 我在这里使用了快速车把，所以我导入了io库CDN. 在这里，我从我的服务器端点获取用户数据，并发出事件create_room.现在，我只用一个数组填充它.

<script src="/socket.io/socket.io.js"></script>
<script>

    const handlereateRoom = () => {
        socket.emit('create_room', {
            roomId: roomName,
            author: user._id,
            invitedUsers: ['numero1', 'numero2']
        });
    }

     document.addEventListener('DOMContentLoaded', async () => {
        //Execute this only after the document is fully loaded
        //Get the main user
        user = await fetchData();
        let url = window.location.origin + '/signup';
        

        //Get dom elements
        const roomName = document.querySelector('#roomName').value;

        if (user) {
            handlereateRoom()
        }

    
    });


</script>

我看到，每次刷新页面时，我都会得到一个新的连接ID集，因此我也会得到一个新的UUID(一个完全不同的对象).所以我得到了一个新的插座和一个新的对象.

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server {
  roomId: '6b20f71b-23ad-48d8-9a20-db8a78ae4dc8',
  author: '65b41b7c389a60d75ed9a2f3',
  invitedUsers: [ 'numero1', 'numero2' ]
}
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server {
  roomId: 'f641a9fc-0fa0-4b65-9186-c782a25fab57',
  author: '65b41b7c389a60d75ed9a2f3',
  invitedUsers: [ 'numero1', 'numero2' ]
}