Reactjs 反应';错误:超过最大更新深度。';具有功能组件和挂钩
我得到以下错误:Reactjs 反应';错误:超过最大更新深度。';具有功能组件和挂钩,reactjs,react-redux,components,react-hooks,Reactjs,React Redux,Components,React Hooks,我得到以下错误: Error: Maximum update depth exceeded. 使用此组件: const UsersPage: React.FunctionComponent<UsersPageProps> = ({ location, history, match, }): JSX.Element => { const dispatch = useDispatch(); const { search } = location; con
Error: Maximum update depth exceeded.
使用此组件:
const UsersPage: React.FunctionComponent<UsersPageProps> = ({
location,
history,
match,
}): JSX.Element => {
const dispatch = useDispatch();
const { search } = location;
const query = parseInt(location.search, 10);
const [currentPage, setCurrentPage] = useState<number>(
isNaN(query) || query < 0 ? 0 : query
);
const users = useSelector((state: any) => state.manageUsers.users.results);
const isLoading = useSelector((state: any) => state.manageUsers.usersLoaded);
const totalPages = useSelector(
(state: any) => state.manageUsers.users.totalPages
);
const handlePaginationChange = (
event: React.ChangeEvent<any>,
pageNumber: number
): void => {
history.push(`${match.path}?page=${pageNumber ?? 0}`);
setCurrentPage(pageNumber ?? 0);
};
const handleAddUserOnClick = () =>
dispatch(manageUsersSetNewUserAndNavigate());
const handleEditOnClick = (id) =>
dispatch(manageUsersSetActiveEditUserAndNavigate(id));
useEffect(() => {
dispatch(manageUsersLoadUsers(currentPage));
}, [currentPage]);
return (
<section className="users page">
{!isLoading && <SectionLoaderWithMessage message={"Loading users..."} />}
{isLoading && (
<React.Fragment>
<Toolbar disableGutters={true}>
<Title flex={1}>Manage Users</Title>
<Button
variant="contained"
color="secondary"
onClick={handleAddUserOnClick}
startIcon={<AddCircle />}
>
Add User
</Button>
</Toolbar>
<TableContainer component={Paper}>
<Table aria-label="table">
<TableHead>
<TableRow style={{ backgroundColor: "white" }}>
<TableCell style={{ fontWeight: "bold", minWidth: 150 }}>
Email
</TableCell>
<TableCell style={{ fontWeight: "bold", minWidth: 150 }}>
Name
</TableCell>
<TableCell style={{ fontWeight: "bold", minWidth: 150 }}>
Surname
</TableCell>
<TableCell style={{ fontWeight: "bold", minWidth: 150 }}>
Firm
</TableCell>
<TableCell style={{ fontWeight: "bold", minWidth: 150 }}>
Type
</TableCell>
<TableCell style={{ fontWeight: "bold", minWidth: 150 }}>
Enabled
</TableCell>
</TableRow>
</TableHead>
<TableBody>
{users.map((user, index) => (
<TableRow
key={`${user.id}-${index}`}
onClick={() => handleEditOnClick(user.id)}
hover
>
<TableCell>{user.email}</TableCell>
<TableCell>{user.name}</TableCell>
<TableCell>{user.surname}</TableCell>
<TableCell>{user.firmName}</TableCell>
<TableCell>{user.type}</TableCell>
<TableCell>{`${user.enabled}`}</TableCell>
</TableRow>
))}
</TableBody>
</Table>
<ThemedTablePagination
totalPages={totalPages}
pageNumber={currentPage}
onChange={handlePaginationChange}
/>
</TableContainer>
</React.Fragment>
)}
</section>
);
};
export default UsersPage;
const UsersPage:React.FunctionComponent=({
地方
历史
火柴
}):JSX.Element=>{
const dispatch=usedpatch();
const{search}=位置;
const query=parseInt(location.search,10);
常量[currentPage,setCurrentPage]=useState(
isNaN(查询)| |查询<0?0:查询
);
constusers=useSelector((state:any)=>state.manageUsers.users.results);
const isLoading=useSelector((状态:any)=>state.manageUsers.usersLoaded);
const totalPages=useSelector(
(state:any)=>state.manageUsers.users.totalPages
);
常量handlePaginationChange=(
事件:React.ChangeEvent,
页码:第
):void=>{
history.push(`${match.path}?page=${pageNumber±0}`);
setCurrentPage(页码??0);
};
const handleAddUserOnClick=()=>
调度(manageUsersSetNewUserAndNavigate());
const handleEditOnClick=(id)=>
调度(manageUsersSetActiveEditUserAndNavigate(id));
useffect(()=>{
调度(manageUsersLoadUsers(currentPage));
},[currentPage]);
返回(
{!正在加载&&}
{isLoading&&(
管理用户
添加用户
电子邮件
名称
姓
商行
类型
启用
{users.map((用户,索引)=>(
handleEditOnClick(user.id)}
悬停
>
{user.email}
{user.name}
{用户姓氏}
{user.firmName}
{user.type}
{`${user.enabled}`}
))}
)}
);
};
导出默认UsersPage;
我在渲染中看不到任何地方正在更新状态以导致无限循环。函数
handlePaginationChange
应该在内部使用效果
当前,每次调用
setCurrentPage
时,它都会重新呈现组件,该组件又会再次调用handlePaginationChange函数,因此再次调用setCurrentPage,并且循环不断 你有没有试着把它减少到一个小的级别?我不确定,但我认为useEffect中的调度会重新渲染组件。因此,当它重新渲染时,useEffect会被再次调用,直到无限。您可以尝试在当前useEffect()中放置一个控制台。count
?看看这是否被称为无限次