回答編集履歴
1
typoの修正
test
CHANGED
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@@ -6,15 +6,15 @@
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6
6
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7
7
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useEffect(() => {
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8
8
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9
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-
const call
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9
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+
const callback = () => console.log('before unload')
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10
10
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11
11
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12
12
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13
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-
window.addEventListener('beforeunload', call
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13
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+
window.addEventListener('beforeunload', callback)
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14
14
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15
15
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16
16
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17
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-
return () => window.removeEventListener('beforeunload', call
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17
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+
return () => window.removeEventListener('beforeunload', callback)
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18
18
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19
19
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}, [])
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20
20
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