I don't think key should be in the last part of here, because key should never change inside the closure: React.useEffect(() => { window.localStorage

I don't think key should be in the last part of here, because key should never change inside the closure: React.useEffect(() => { window.localStorage.setItem(key, JSON.stringify(value)); }, [key, value]); It's pretty neat because it has a simple and familiar API. I think it's more like sticky props than sticky state, though... Edit: here's another hook with a more accurate, less catchy name, plus error handling: https://usehooks.com/useLocalStorage/ https://usehooks.com/useLocalStorage/