1.pure_js_in_creating_web_elememt.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="root"></div>
    <script>
        const rootElement = document.getElementById("root")
        const headingElement = document.createElement("h1")
        headingElement.className = "hello-react-text"
        headingElement.textContent = "Hello, React !"
        rootElement.append(headingElement)
    </script>
</body>
</html>