react callback set staet
setState( { name: "Michael" }, () => console.log(this.state));// => { name: "Michael" }react callback set staet
setState( { name: "Michael" }, () => console.log(this.state));// => { name: "Michael" }react functional components setstate callback
const [state, setState] = useState({ name: "Michael" })
const isFirstRender = useRef(true)
useEffect(() => {
if (!isFirstRender.current) {
console.log(state) // do something after state has updated
}
}, [state])
useEffect(() => {
isFirstRender.current = false // toggle flag after first render/mounting
}, [])Copyright © 2021 Codeinu
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