if (currentMessage !== "") {
const messageData = {
room: room,
author: username,
message: currentMessage,
time:
new Date(Date.now()).getHours() +
":" +
new Date(Date.now()).getMinutes(),
};
await socket.emit("send_message", messageData);
setMessageList((list) => [...list, messageData]);
setCurrentMessage("");
}
};
useEffect(() => {
socket.on("receive_message", (data) => {
setMessageList((list) => [...list, data]);
});
}, [socket]);
在输出中,我在接收方两次接收到一条消息.