React · Middle · Question 72 of 75

When does a `useRef` value change cause a re-render?

✓Correct answer: Never - changing ref.current doesn't trigger rendering
2Always on the next tick
3Only if the ref is attached to a DOM node

Explanation

Refs are for values that don't affect the output: timer ids, previous values, DOM nodes. If the UI should change, use state.

Further reading

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