State in React
State in React – Complete Beginner Guide (2026)
State in React is used to store and manage dynamic data inside a component. It helps in building interactive and real-time user interfaces. Understanding state is essential for working with React.
What is State in React
State is an object that holds data within a component. This data can change over time and controls how the component renders.
Example of State in React
function Counter() {
const [count, setCount] = useState(0);
return (
<div>
<h1>{count}</h1>
<button onClick={() => setCount(count + 1)}>Increase</button>
</div>
);
}
How State Works
State is managed using hooks like useState. When state changes, React automatically re-renders the component and updates the UI.
State vs Props
State is managed inside a component
Props are passed from parent to child
State can change, props are read-only
Advantages of State
Dynamic UI updates
Better user interaction
Efficient rendering
Improved performance
Best Practices
Keep state minimal
Use meaningful names
Do not modify state directly
Use setter functions to update state
Internal Linking Strategy
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FAQs
What is state in React
State is used to store and manage dynamic data in a component.
What happens when state changes
The component re-renders automatically.
What is useState
It is a hook used to manage state.
What is state vs props
State is internal, props are external.