Effects

Introduction

Effects run side effects when signal dependencies change — like console.log, localStorage, or analytics.

Example

effect(() => {
  console.log(`Count changed to: ${this.count()}`);
  // Runs automatically when count() changes
});

// With cleanup
effect((onCleanup) => {
  const subscription = someObservable$.subscribe(v => console.log(v));
  onCleanup(() => subscription.unsubscribe());
});

Summary

Effects handle side effects triggered by signal changes.”