prerequisites for react js and installation

            Prerequisites for react js:

HTML and CSS: React is primarily used to build user interfaces, and a good understanding of HTML for structuring content and CSS for styling is crucial.

JavaScript (ES6+): React is a JavaScript library, and a good grasp of JavaScript is essential. Familiarity with ES6+ features like arrow functions, classes, destructuring, and moduls will be particularly helpful.

Node.js and npm (Node Package Manager): React projects are typically managed using npm. Understanding how to use npm to install packages, manage dependencies, and run scripts is important.

Command Line/Shell Basics: Being comfortable with the command line or shell is essential for setting up and managing React projects.

Version Control (e.g., Git): Version control is a crucial skill for any developer. Knowing how to use Git for tracking changes and collaborating on projects is highly recommended.

Basic Understanding of Front-End Development Concepts: Familiarity with concepts like DOM manipulation, event handling, and asynchronous programming will make it easier to understand React concepts.

Text Editor or Integrated Development Environment (IDE): You'll need a code editor to write and edit your React code. Popular choices include Visual Studio Code, Atom, or Sublime Text.

While these are the primary prerequisites, keep in mind that learning React can also be a part of your journey in mastering these technologies. React has a supportive community, and there are plenty of resources available to help you get started, even if you're still working on strengthening some of these skills.

Let's create a simple React.js program that displays a "Hello, React!" message. We'll use the Create React App tool to set up our project. If you haven't installed it yet, you can do so by running the following command in your terminal:

1. npx create-react-app my-first-react-app
2. cd my-first-react-app
3. npm start

these 3 steps are to create a react simple app 

Printing hello world on react js:

import logo from './logo.svg';

import './App.css';

function App() {

  return (

    <div className="App">

      <header className="App-header">

        <img src={logo} className="App-logo" alt="logo" />

        <p>

          Edit <code>src/App.js</code> and save to reload.

        </p>

        <a

          className="App-link"

          href="https://reactjs.org"

          target="_blank"

          rel="noopener noreferrer"

        >

          Learn React

        </a>

        <h1> Hello this is my first react js </h1>

      </header>

    </div>

  );

}

export default App;