What is the Virtual DOM in React?

The Virtual DOM is a lightweight memory representation of the actual DOM. React compares the Virtual DOM with the real DOM and efficiently updates only the parts that have changed.

What are React Components?

Components are independent, reusable pieces of UI. They act like JavaScript functions that accept arbitrary inputs (props) and return React elements describing what should appear on the screen.

What are 'props' in React?

Props (short for properties) are read-only arguments passed from a parent component to a child component, allowing data to flow down the component tree.

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Routes & Links in React: Web Development

Master the fundamental building blocks of React Router. Learn the differences between Routes and the legacy Switch, and understand when to use Link vs NavLink for optimal user experience.

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Component Logic.

The core of any SPA is the ability to switch views without reloading. This is achieved through a combination of structural components that manage the 'where' and interactive components that manage the 'how' of navigation.

1The Routes Container

In modern React Router (v6+), the <Routes> component is the orchestrator. It examines all child <Route> elements and selects the single best match based on the current URL. This 'Best Match' algorithm eliminates the need for the exact prop used in older versions, making your routing logic cleaner and more predictable.