1st react app hallow world

 

Index.js

import React from "react";

import  ReactDom from "react-dom";

import el from "./app"

import {Cor} from "./app"

// ReactDom.render(el,document.getElementById("root"));

ReactDom.render(<Cor/>,document.getElementById("root"));

app.js

import React from "react";

import  ReactDom from "react-dom";

import {Component} from "react";

// element

// let el = <h1>Hallow world</h1>;

// export default el

//component

class Cor extends Component{

    render(){

        return <h1>Hallow Munna</h1>;

    }

}

export {Cor};