react-examples/13_HOC.html at master · leifmarcus/react-examples · GitHub

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<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>Higher-Order Components</title>
    <link href="https://fonts.googleapis.com/css?family=Roboto+Mono:300,300i,700,700i|Roboto:300,300i,700,700i" rel="stylesheet">
    <link rel="stylesheet" href="css/react.css">
    <script src="https://unpkg.com/react@latest/dist/react.js"></script>
    <script src="https://unpkg.com/prop-types/prop-types.js"></script>
    <script src="https://unpkg.com/react-dom@latest/dist/react-dom.js"></script>
    <script src="https://unpkg.com/babel-standalone@6.15.0/babel.min.js"></script>
</head>
<body>

    <div id="root"></div>
    <script type="text/babel" src="js/readMore.js"></script>
    <script type="text/babel" data-presets="es2015,stage-2,react" data-plugins="transform-class-properties">
    ( function() {

        function Listing( props )
        {
            return props.entries.length > 0 && (
                <div className="Listing">
                    <ul>
                        {
                            props.entries.map( entry =>
                                ( <li key={ entry.id }>{ entry.title }</li> ) )
                        }
                    </ul>
                </div>
            );
        };

        function fetchListing( WrappedComponent, dataUrl )
        {
            return class extends React.Component
            {
                state = {
                    entries : [],
                }

                componentDidMount()
                {
                    fetch( dataUrl )
                        .then( response => response.json())
                        .then( entries =>
                        {
                            this.setState( { entries } )
                        } )
                }

                render()
                {
                    return (
                        <div className="Entries">
                            <h2>{ this.props.title }</h2>
                            <WrappedComponent { ...this.state } />
                        </div>
                    );
                }
            }
        }

        const EntriesA = fetchListing( Listing, 'data/entriesA.json' );
        const EntriesB = fetchListing( Listing, 'data/entriesB.json' );

        // render to Component:
        ReactDOM.render(
            (
                <div>
                    <h1>Higher-Order Components</h1>

                    <EntriesA title="Entries A" />
                    <EntriesB title="Entries B" />

                    <ReadMore
                        url="https://facebook.github.io/react/docs/higher-order-components.html"
                        about="Higher-Order Components"
                    />
                </div>
            ),
            document.querySelector( '#root' )
        );

    }() )
    </script>
</body>
</html>