December 13, 2021

Could the useState be used without the setter?

6 minutes

I have a question... could the useState be used without using the setter? because a teammate use it in that way to get an item from sessionStorage

const [initialScrollPosition] = useState(() => Number.parseFloat(sessionStorage.getItem('offset') || 0));

and argues that this is so that the component is not unnecessarily rerendered and to read the sessionStorage only once! 🤔 but I think we can use useMemo for those cases but the useState is still used in this form in several components.

useState lazy initialization and function updates

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By Kent C. Dodds

22 ratings

December 13, 2021

Could the useState be used without the setter?

6 minutes

I have a question... could the useState be used without using the setter? because a teammate use it in that way to get an item from sessionStorage

const [initialScrollPosition] = useState(() => Number.parseFloat(sessionStorage.getItem('offset') || 0));