DI @diyorbekk_dev
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nameni input orqali o‘zgartiryapsiz. Shu paytda local state siz yozayotgan qiymatni saqlab turishi kerak.nameidan boshlanishi kerak.useLinkedState.
const [name, setName] = useLinkedState(
props.user.id,
() => props.user.name
);
props.user.id o‘zgarmasa:name siz kiritgan local o‘zgarishlarni saqlab turadi.user.id o‘zgarsa:nameini darhol qaytaradi.useEffect kerak emassetState qilish kerak emasuseLinkedState yangi source kelganda oldingi source va local value’ni ham olish imkoniyatini beradi claculationda.
const [selection, setSelection] = useLinkedState(
items,
(nextItems, previous) =>
nextItems.find(
(item) => item.id === previous?.value?.id
) ?? nextItems[0] ?? null
);
previous - undefined.
source,
value
}
Object.is orqali solishtiriladi. Kerak bo‘lsa sourceEqual va valueEqual orqali custom comparison ham berish mumkin.useState kabi useLinkedState ham uchinchi tuple qiymati sifatida getValue beradi. Bu async yoki delayed callback ichida eng so‘nggi value’ni o‘qish uchun ishlatiladi.useLinkedStatening g‘oyasi juda sodda:
