How React useState hook Works

React Hooks are a powerful feature introduced in React 16.8 that allows you to use state and other React features in functional components. With Hooks, you can manage state and lifecycle methods without needing to write a class component.

Let’s dive into an example to demonstrate how React Hooks work! Imagine we want to create a counter component that increments a number when a button is clicked. Here’s how you can achieve this using React Hooks:

import React, { useState } from 'react';

const Counter = () => {
  // Declare a state variable called 'count' and initialize it to 0
  const [count, setCount] = useState(0);

  // Function to increment the count
  const incrementCount = () => {
    setCount(count + 1);
  };

  return (
    <div>
      <p>Count: {count}</p>
      <button onClick={incrementCount}>Increment</button>
    </div>
  );
};

export default Counter;

In the above example, we import the useState hook from React. We use it to declare a state variable called count and its corresponding update function setCount, initializing count to 0. The useState hook returns an array with two elements: the current value of the state variable and the function to update it.

We then define the incrementCount function, which updates the count state variable by calling setCount with the new value.

Finally, we render the current value of count along with a button that triggers the incrementCount function when clicked.

This is just a simple example, but React Hooks can be used for much more complex scenarios, allowing you to manage state, handle effects, and even create custom hooks to share logic between components.

I hope this helps you understand how React Hooks work!