嗨,我具有以下功能:
const mount = useRef(state);
const writeUserData = async () => {
await Firebase.database()
.ref("/database")
.set(state);
console.log("DATA SAVED");
};
const getUserData = () => {
let ref = Firebase.database().ref("/database");
const state = snapshot => {
if (snapshot.val()) setState(snapshot.val());
};
ref.on("value", state);
return () => {
ref.off("value", state);
};
};
useEffect(() => {
getUserData();
console.log("Get Developers");
getSettingsData();
// eslint-disable-next-line
}, []);
useEffect(() => {
if (mount.current === state) {
} else {
writeUserData();
console.log("Write Developers");
}
// eslint-disable-next-line
}, [state]);
有许多使用OnUpdate函数的示例。但是我正在尝试使用react hooks>尽管上面的代码有效。我觉得这可能是最有效的方法,或者想检查它是否是正确的方法。可以告诉我。