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myReactdemo
/
demo1.html

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script src="js/react.min.js"></script>
    <script src="js/react-dom.min.js"></script>
</head>
<body>
<div id="app" class="paa"></div>
<script>
    //DOM组件
    ReactDOM.render(
            React.DOM.div({
                id: "my-heading",
                style:{
                    background:"#f0f0f0",
                    color:"#ffffff",
                    height:"20rem",
                    width:"100%",
                    fontSize:"5rem",
                    margin:"0",
                    padding:"0"
                }
            },React.DOM.span({},
                    React.DOM.strong({},"hello"),
                    React.DOM.em({
                        style:{
                            textDecoration: "underline"
                        }
                    },"world"))),
            document.getElementsByClassName("paa")[0]
    );
</script>
</body>
</html>