[英]React useEffect Missing Dependency
React showing missing dependancy, but everything seems ok. React 显示缺少依赖关系,但一切似乎都很好。 I dont want declare function inside useeffect, can you help with that?
我不想在useeffect里面声明function,你能帮忙吗?
Even if I declare all function codes inside usEffect, it tells then user token also missing dependancy.即使我在 usEffect 中声明了所有 function 代码,它也会告诉用户令牌也缺少依赖关系。 I dont understand what wants react here.. there is no examples in documentation.
我不明白要在这里做出什么反应..文档中没有示例。
const Profile = () => {
const [user, dispatch] = useContext(UserContext)
const [login, setLogin] = useState('waiting')
let [selected, setSelected] = useState('video')
let [section, setSection] = useState()
const [userdata,setUserData] = useState()
useEffect(() => {
checkCurrentUser()
}, [])
let checkCurrentUser = async () => {
console.log(user.token)
let result = await requestCurrentUser(user.token)
if (result.status) {
await dispatch({
type: "USER",
payload: result.data
})
setUserData(result.data)
setLogin('success')
} else {
setLogin('failed')
}
}
if (login === 'waiting') {
return (
<PianoPlay width={300} classAdd="loading" />
)
}
else if (login === 'failed') {
return (
<Redirect push to="/" />
)
}
else if (!userdata.hasOwnProperty('id')) {
return (
<Redirect push to="/home" />
)
}
You can solve this in two ways.您可以通过两种方式解决此问题。
1 - useEffect(checkCurrentUser, [])
1 -
useEffect(checkCurrentUser, [])
2- 2-
const checkCurrentUser = useCallback(() => {
...
}, [])
useEffect(() => {
checkCurrentUser()
}, [checkCurrentUser])
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