What is the purpose of React’s useState hook?

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The useState hook in React is used to add state to functional components. Before hooks, only class components could have state. With useState, you can now manage local component state directly inside a function component.

Purpose:

useState allows you to:

• Store values that can change over time (like user input, counters, toggles).

• Re-render the component automatically when the state changes.

Syntax:

• state: The current value.

• setState: A function to update the state.

• initialValue: The default value of the state variable.

In this example:

• count holds the number of clicks.

• setCount updates the value and re-renders the component.

Why It’s Useful:

• Enables dynamic, interactive components.

• Keeps component logic clean and simple.

• Helps in building modern, functional React components without needing classes.

Summary:

useState is a key hook in React that brings state management to functional components, making them powerful and capable of reacting to user interactions and changes over time.

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