Photo_React/photo/backup/index.js

/*
import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import * as serviceWorker from './serviceWorker';
import SearchAppBar from './SearchBar';
import ButtonAppBar from './testM';
import preview from './modal';
ReactDOM.render( <
    div >
    <
    ButtonAppBar / >
    <
    App / >
    <
    preview / >
    <
    /div>,
    document.getElementById('root')
);

// If you want your app to work offline and load faster, you can change
// unregister() to register() below. Note this comes with some pitfalls.
// Learn more about service workers: https://bit.ly/CRA-PWA
serviceWorker.unregister();
*/

import React from 'react';
import ReactDOM from 'react-dom';
import Demo from './modal';

ReactDOM.render( < Demo / > , document.querySelector('#root'));