KITFORMA · EDITORIAL GUIDE
Why does my React interval keep using the initial counter?
KitForma editorial guide. An interval created by an empty-dependency Effect captures that render’s count.
Step-by-step guidance
An interval created by an empty-dependency Effect captures that render’s count. For an incrementing timer use
setCount(n => n + 1) inside the callback and return () => clearInterval(id) from setup. If the callback truly depends on another changing value, include it or redesign that dependency. Verify several ticks and unmount/remount; suppressing lint can conceal a stale closure rather than solve it.Sources and verification
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This starter guide was prepared by KitForma with AI assistance. It is not presented as a real member question or an independent user review. Check the sources and the result with your own file; report corrections in the discussion.