dom - basic

<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>dom - basic</title>
</head>
<body>
    <input type="text" id="name_input">
    <button onclick="changeName()">Click Me!</button>
    <h1 id="name_result"></h1>

    <script>

        function changeName(){
            name_input = document.getElementById("name_input")
            name_result = document.getElementById("name_result")

            name_result.innerHTML = name_input.value
        }

    </script>
</body>
</html>