React useState Hook
useState is a React Hook used to store and update data in a component. When the state changes, React updates the UI. 1. Basic syntax const [ value , setValue ] = useState ( initialValue ); value — current state value. setValue — function to update the state. useState(initialValue) — sets the initial value. 2. Example: Counter import { useState } from " react " ; export default function App () {…
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React's useState Hook is a powerful tool for managing state within functional components. It allows developers to store and update data, triggering a UI update whenever the state changes. The hook's basic syntax consists of two elements: the current state value and a function to update that state. The useState hook is initialized with an initial value, which can be set using useState(initialValue).
For instance, in a counter example, useState(0) sets the initial count to 0. The function setCount is then used to increment, decrement, or reset the count. When the component re-renders, React updates the UI to reflect the new state.
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