In React, State and Props are two core concepts that help manage data flow in components, but they serve different purposes. Here's a simple and clear comparison:

Feature	Props	State
Definition	Props (short for "properties") are used to pass data from parent to child components.	State is a local data storage that is controlled by the component itself.
Mutability	Immutable – a component cannot change its props.	Mutable – a component can update its own state using setState (or useState in hooks).
Usage	Used to configure a component, like arguments to a function.	Used to handle dynamic data that changes over time (like form inputs, toggles, etc.).
Who Sets It?	The parent component sets the props for child components.	The component itself manages its own state internally.
Access	Accessed via props object (this.props in class components or directly in function parameters in functional components).	Accessed via this.state (class components) or useState hook (functional components).
Example	<UserCard name="John" age={30} /> — name and age are passed as props.	A counter app where count is a state variable updated when a button is clicked.
Purpose	Communication between components.	Dynamic behavior and internal changes within a component.

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Quick Analogy:

• Props are like parameters you pass into a function.
• State is like variables declared inside a function that can change over time.

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Example Code:

// Using Props
function Welcome(props) {
  return <h1>Hello, {props.name}!</h1>;
}

// Using State
import { useState } from 'react';

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

  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>
        Click me
      </button>
    </div>
  );
}

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Final Thought:

• Props = Pass data into components.
• State = Manage data inside components.

Mastering both State and Props is essential to building powerful and dynamic React applications!

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