Method UseInsertionEffect

Namespace

Velvet

Assembly

Velvet.Docs.dll

UseInsertionEffect(Func<Action?>?, object?[]?)

Position-based insertion effect. Runs synchronously after Render completes and before any UseLayoutEffect(Func<Action?>?, object?[]?) of the same commit. Intended for injecting styles: the DOM is not yet laid out, so the body must not read layout or refs — use UseLayoutEffect(Func<Action?>?, object?[]?) for that.

public static void UseInsertionEffect(Func<Action?>? factory, object?[]? deps = null)

Parameters

factory Func<Action>

Effect body. Returns a cleanup Action invoked on unmount or when deps change.

deps object[]

Dependency array. When deeply equal to the previous render, the effect is skipped. When omitted or null, the effect runs on every render.

UseInsertionEffect(Func<IDisposable>, object?[]?)

IDisposable variant. Dispose() is called when deps change.

public static void UseInsertionEffect(Func<IDisposable> factory, object?[]? deps = null)

Parameters

factory Func<IDisposable>

Effect body returning an System.IDisposable. Disposed on unmount or when deps change.

deps object[]

Dependency array. When deeply equal to the previous render, the effect is skipped. When omitted or null, the effect runs on every render.