質問編集履歴
1
デモ更新
test
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test
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@@ -6,7 +6,7 @@
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下記はデモです。
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[demo](https://codesandbox.io/s/
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[demo](https://codesandbox.io/s/kind-monad-9huvo?fontsize=14&hidenavigation=1&theme=dark)
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1つ目のinputに```hoge```を入力すると、2つ目のinputが入力できるようになります。
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@@ -34,7 +34,41 @@
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カスタムフック```useCount.js```
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```js
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export const useCount = () => {
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const [text1, setText1] = useState("");
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const input1 = ({ target: { value } }) => setText1(value);
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const [text2, setText2] = useState("");
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const input2 = ({ target: { value } }) => setText2(value);
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const [count, setCount] = useState(0);
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useEffect(() => {
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const countUp = () => setCount((count) => count + 1);
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const timerID = setInterval(countUp, 1000);
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return () => clearInterval(timerID);
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}, []);
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return { input1, text1, input2, text2, count };
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};
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```
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