React-study/index.html at main · doahui/React-study · GitHub

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<!DOCTYPE html>
<html>
    <body>
        <div id = "root"></div>
    </body>
    <script src="http://unpkg.com/react@17.0.2/umd/react.production.min.js"></script>
    <script src="http://unpkg.com/react-dom@17.0.2/umd/react-dom.production.min.js"></script>
    <script src="http://unpkg.com/@babel/standalone/babel.min.js"></script>
    <script type="text/babel">
        const root = document.getElementById("root");
        const Title = () => (
            <h3 id ="title"  onMouseEnter={() =>console.log("mouse enter")}>
                Hello I'm a title
            </h3>
        );
        const Button = () => <button
            style={{
                backgroundColor : "pink",
            }}
            onClick = {() => console.log("im clicked")}
            >
            Click me
            </button>
        const Container = (
            <div>
                <Title />
                <Button />
            </div>);
        ReactDOM.render(Container, root);
    </script>
</html>