web/frontend/src/App.js
import React, {Component} from 'react';
import {Button} from 'reactstrap';
import logo from './logo.svg';
import './App.css';
class App extends Component {
state = {
msg: null
};
onClick = () => {
this.setState({msg: 'You clicked the button, didn\'t you?'});
};
render() {
const msg = this.state.msg ? this.state.msg : 'Hello, world!';
return (
<div className="App">
<header className="App-header">
<img src={logo} className="App-logo" alt="logo"/>
<p>
{msg}
</p>
<Button color="danger" onClick={this.onClick}>Do not press!</Button>
<a
className="App-link"
href="https://reactjs.org"
target="_blank"
rel="noopener noreferrer"
>
Learn React
</a>
</header>
</div>
);
}
}
export default App;