migutw42
9/27/2018 - 8:00 AM

react-standalone

react-standalone

index.html
content_copyfile_download
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>React Standalone</title>
</head>
<body>
    <div id="root"></div>
    <script src="https://unpkg.com/react@16/umd/react.development.js"></script>
    <script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
    <script src="https://unpkg.com/babel-standalone@6.15.0/babel.min.js"></script>
    <script type="text/babel" src="./main.js"></script>
</body>
</html>⏎
main.js
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class App extends React.Component {
    constructor() {
        super()
        this.state = {num: 1}
    }
    render() {
        const {num} = this.state;
        return (
            <div>
                <h1>up to: {num}</h1>
                <div>
                    <button onClick={() => (this.setState({num: num + 1})) }>plus</button>
                    <button onClick={() => (this.setState({num: num - 1})) }>minus</button>
                </div>
                <div>
                    {
                        Array.from({length: num}, (v, k) => k + 1).map(n =>
                            <span key={n}>{n} </span>
                        ) 
                    }
                </div>
            </div>
        )
    }
}

ReactDOM.render(
    <App/>,
    document.getElementById('root')
);