What Are Higher-Order Components (HOC)? A Higher-Order Component (HOC) is a function that takes a component and returns a new component.It is used to reuse component logic without repeating code.…

React Portals vs Forward Ref Both React Portals and Forward Ref deal with DOM elements, but they serve different purposes: Portals: Render children into a DOM node outside the parent…

What Is React Forward Ref? React forwardRef allows you to pass a ref from a parent component to a child component.It’s useful when you need direct access to DOM elements…

What Are React Lazy and Suspense? React Lazy and Suspense allow lazy-loading of components, reducing the initial load time of your app. React.lazy() dynamically imports components Suspense shows fallback UI…

What Is React Strict Mode? React Strict Mode is a tool for highlighting potential problems in an application.It does not render any visible UI, but it activates additional checks and…

What Are Error Boundaries? Error boundaries are React components that catch JavaScript errors anywhere in their child component tree, log them, and display a fallback UI instead of crashing the…

What Are React Portals? React Portals allow you to render components outside the main DOM hierarchy of the parent component.This is useful for modals, tooltips, and overlays. Basic Syntax ReactDOM.createPortal(child,…

What Exactly Are React Fragments? React Fragments are a specialized feature in React that allow you to group a list of children without adding extra nodes to the DOM. Think…

What Is useMemo Hook? The useMemo hook memoizes the result of a computation so that it is only recalculated when dependencies change.It is useful for expensive calculations in functional components.…

What Is useCallback Hook? The useCallback hook memoizes a function so that it is not recreated on every render. It’s useful when passing functions to memoized child components to avoid…