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【React】ウィンドウを閉じる際に処理を実行する方法

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以下のように記述することでウィンドウ(タブ)を閉じる際に実行される処理を定義できます。

  const handleBeforeUnload = () => {
    console.log('beforeunload')
  }
  
  useEffect(() => {
    window.addEventListener('beforeunload', handleBeforeUnload)

    return () => {
      window.removeEventListener('beforeunload', handleBeforeUnload)
    }
  }, [handleBeforeUnload])

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