reactJs.js

// React is not used for any backend it is mainly use to make the site faster and smooth
// It creates a virtual DOM where all the data is already loaded and used when asked 
// It doesn't ask the compiler again and again for data it loads it once and use it 
// Isme agr use karna hai toh usko ham script tag me use karte hai jo html file hai uske 
// Uske baad usme ek function jata hai 
// ReactDOM.render(
// <h1>Hello,Lakshay is Here</h1>
// document.getElementById('root')
// );
// Isme sabse pehle jo hame dikhana hai voh likhte hai uske baad jaha dhikhana hai voh likhte hai 
// To start a react app we have to download it through cmd by first writing 

// npx create-react-app my-app
// After that we have to 
// cd my-app
// then npm start 
// This will start the app 
// Now after this we will do the most of the coding the app downloaded through npm