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[英]React Hook useEffect has a missing dependency Either include it or remove the dependency array react-hooks/exhaustive-deps
[英]React Hook useEffect has a missing dependency: 'url'. Either include it or remove the dependency array react-hooks/exhaustive-deps
useEffect(() => {
fetch(url)
.then(response => response.json())
.then(data => setData(data[0]))
.catch(err => console.warn(err))
}, [cityKey])
我该如何解决这个警告?
useEffect(() => {
fetch(url)
.then(response => response.json())
.then(data => setData(data[0]))
.catch(err => console.warn(err))
}, [cityKey,url])
根据警告建议的解决方案,在依赖项数组中包含url
。
useEffect(() => {
fetch(url)
.then(response => response.json())
.then(data => setData(data[0]))
.catch(err => console.warn(err))
}, [cityKey, url])
或者,您可以禁用警告(但不推荐):
useEffect(() => {
fetch(url)
.then(response => response.json())
.then(data => setData(data[0]))
.catch(err => console.warn(err))
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [cityKey])
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