Use Effect

The useEffect Hook

Understand useEffect for side effects in function components, covering the dependency array, cleanup functions, and effect timing.

React Cheat Sheet

React hooks, components, lifecycle methods, and common patterns.

What Are the Rules of Hooks and Why Do They Exist?

The Rules of Hooks state that hooks must only be called at the top level of a React function component or custom hook, never inside loops, conditions, or neste…

useEffect vs useLayoutEffect: What Is the Difference?

useEffect runs its callback asynchronously after the browser has painted the updated DOM to the screen, while useLayoutEffect runs synchronously after DOM muta…

How Does React Strict Mode Change Component Behavior?

React Strict Mode is a development-only wrapper component that intentionally double-invokes component function bodies, state initializers, and effect setup/cle…