해결된 질문
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import React, { useCallback, useMemo } from "react";
import "../List.css";
import TodoItem from "./TodoItem";
import { useState } from "react";
const List = ({ todos, onUpdate, onDelete }) => {
const [search, setSearch] = useState("");
console.log(todos);
const onChangeSearch = (e) => {
setSearch(e.target.value);
};
const getFilteredData = () => {
if (search === "") {
return todos;
} else {
return todos.filter((todo) =>
todo.content.toLowerCase().includes(search.toLowerCase())
);
}
};
const filteredTodos = getFilteredData();
const getAnalyedData = () => {
console.log("getAnalyedData");
const totalCount = todos.length;
const doneCount = todos.filter((todo) => todo.isDone).length;
const notDoneCount = totalCount - doneCount;
return {
totalCount,
doneCount,
notDoneCount,
};
};
const analyzedData = useMemo(() => {
return getAnalyedData();
}, [todos]);
return (
<div className="List">
<div className="GetAnalyedData">
<h1>total :::{analyzedData.totalCount}</h1>
<h1>done :::{analyzedData.doneCount}</h1>
<h1>notDone:::{analyzedData.notDoneCount}</h1>
</div>
<h4>검색어</h4>
<input
placeholder="검색어 입력"
onChange={onChangeSearch}
value={search}
/>
<div className="todos_wrapper">
{filteredTodos.map((todo) => {
return (
<TodoItem
key={todo.id}
{...todo}
onUpdate={onUpdate}
onDelete={onDelete}
/>
);
})}
</div>
</div>
);
};
export default List;
const getAnalyedData = () => {
console.log("getAnalyedData");
const totalCount = todos.length;
const doneCount = todos.filter((todo) => todo.isDone).length;
const notDoneCount = totalCount - doneCount;
return {
totalCount,
doneCount,
notDoneCount,
};
};
const analyzedData = useMemo(() => {
return getAnalyedData();
}, [todos]);
이런식으로 넣어도 혹시 가능할까요 ???
Line 36:6: React Hook useMemo has a missing dependency: 'getAnalyedData'. Either include it or remove the dependency array react-hooks/exhaustive-deps
이런 에러가 떠서요 ..기능은 돌던데
답변 1
0
안녕하세요 이정환입니다.
네 문제 없습니다. 결론적으로 todos 데이터에 변화가 생겼을 때에만 동작시키게 되니까요 😃
추가로 Lint 경고 메세지는 강의중 안내드렸듯 무시하셔도 괜찮습니다!