React16.7初探之定時器引發的問題

前言 週末嘗試了一下React新的hooks功能,來封裝一個組件，遇到一個bug，所以記錄一下過程！ 報錯如下： 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

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