Javascript Socket.io不'；t在断开连接后从数组中删除用户对象

socket

和

user

字段也被分配给

aUser

，然后它被推送到

socketUsers

数组中。这发生在用户登录之后，因为我们需要他们的用户数据

当用户断开连接时，控制台为我记录阵列，但用户仍然在那里（socket和userdata字段）

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我做错了什么？

您对数组的索引错误，将新套接字推到数组上不会使这些套接字的ID成为数组的索引，我可以告诉您，您可能应该改用对象

const socketUsers = [];

io.on("connection", (socket) => {
    socket.on("user", (userdata) => {
        const aUser = { socket: socket, user: userdata };
        socketUsers.push(aUser);
    });

    socket.on("disconnect", () => {
        delete socketUsers[socket.id];
        console.log(socketUsers);
    });
});

如果您如此坚持使用数组，则必须手动搜索它以查找所需元素的索引

const socketUsers = {};

io.on("connection", (socket) => {
    socket.on("user", (userdata) => {
        const aUser = { socket: socket, user: userdata };
        socketUsers[socket.id] = aUser;
    });

    socket.on("disconnect", () => {
        delete socketUsers[socket.id];
        console.log(socketUsers);
    });
});

const socketUsers = [];

io.on("connection", (socket) => {
    socket.on("user", (userdata) => {
        const aUser = { socket: socket, user: userdata };
        socketUsers.push(aUser);
    });

    socket.on("disconnect", () => {
        socketUsers.splice(socketUsers.findIndex(elem => elem.socket.id === socket.id), 1);
        console.log(socketUsers);
    });
});