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13.4.2 쿼리스트링 src/pages/About.js #349

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menomik1011 opened this issue Feb 24, 2022 · 0 comments
Open

13.4.2 쿼리스트링 src/pages/About.js #349

menomik1011 opened this issue Feb 24, 2022 · 0 comments

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@menomik1011
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menomik1011 commented Feb 24, 2022

learning-react/13/router-tutorial/src/pages/About.js 에서
Toggle detail버튼을 누르고 mode + 1 버튼을 누르는 경우
mode의 값이 Nan으로 나옵니다
반대로 실행하면 올바른 값이 나옵니다

onIncreaseMode함수의
const nextMode = mode === null ? 1 : parseInt(mode) + 1; 를 아래와 같이 작성하면 정상 작동하는데 수정해서 사용하는게 맞는걸까요
const nextMode = mode === null || "null" ? 1 : parseInt(mode) + 1;

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