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setInterval 等读取不到 useState 最新值的问题你们怎么解决？
source link: https://www.v2ex.com/t/889077
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如下，增加一个 timeDateG 不是最优雅的方式吧？
import { useEffect, useState } from "react"
let timeDateG = '00:00:00'
const UseStateIssue = () => {
const [timeDate, setTimeDate] = useState('00:00:00')
useEffect(()=>{
timeDateG = timeDate
}, [timeDate])
useEffect(()=>{
const interval = setInterval(()=>{
console.log('timeDate', timeDate) // 一直是 '00:00:00'
console.log('timeDateG', timeDateG) // 解决方法 1
}, 2000)
return () => clearInterval(interval)
}, [])
return (
<div>
<div>{timeDate}，这里正常刷新</div>
<button onClick={()=>{
setTimeDate(new Date().toLocaleTimeString())
}}>setTimeDate</button>
</div>
)
}
export default UseStateIssue
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