Insert styles before layout effects.
Section: Effect Hooks
useInsertionEffect for CSS injection
tsx
tsx
useInsertionEffect(() => {
injectStyles(ruleText);
}, [ruleText]);Explanation
Library-oriented hook for style injection use cases.
Learn the surrounding workflow
Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.
Related commands
Same sheet · prioritizing Effect Hooks
useLayoutEffect before paint
Run a layout-sensitive effect before the browser paints.
Fetch inside an effect
Fetch client-side data in an effect with cleanup guard.
useEffectEvent for non-reactive effect logic
Read latest values in an effect event without re-triggering the effect.