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newpost/useUpdateEffect.hooks.js

Created July 29, 2020 13:31
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useUpdateEffect.hooks.js
function useUpdateEffect(cb: () => void, depend: any[]) {
const [status, setStatus] = useState(false)
useEffect(() => {
if(status) {
cb()
} else {
setStatus(true)
}
}, depend)
}
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newpost commented Jul 29, 2020

// 满足只有当依赖发生变化时候才执行cb.第一次时候不会调用cb

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