React組件銷燬中清理異步操做和取消請求

問題描述: 一般是 react 組件已銷燬，可是組件中一些異步操做還未結束會報以下這個錯誤: Warning: Can't perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cance

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