React useState Hook

The useState Hook in React enables storing and updating data within functional components, triggering UI updates upon state changes. Using the syntax const [value, setValue] = useState(initialValue), developers manage current values and update functions. Practical applications include implementing counters with increment, decrement, and reset operations, as well as creating toggle buttons and input fields. Additionally, functional components must be JavaScript functions returning JSX, with component names starting with a capital letter for proper identification.