How to use and implement useState()

Using useState is fundamental in React for managing state within functional components. Here's a breakdown of how to use and implement useState, and when it's appropriate to do so:



When to Use useState: 

  • Managing Component State: Use useState when you need to manage component-specific state within a functional component.
  • Simple Local State: Use useState for simple state that doesn't require complex logic or actions.
  • State that Can Change Over Time: Use useState when you have a piece of data that can change over time based on user interactions, network requests, or other events.

How to Use useState:

  1. Import the Hook: Import the useState hook from React.
  2. Invoke useState with Initial Value: Call useState and provide the initial value for the state.
  3. Access and Update State: Use state to access the current state value and setState to update the state.
import React, { useState } from 'react';

const Counter = () => {
  const [count, setCount] = useState(0);

  const increment = () => {
    setCount(count + 1);
  };

  const decrement = () => {
    setCount(count - 1);
  };

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

export default Counter;

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