​x
 
<!DOCTYPE html>
<html lang="en">
<head>
    <title>DOM Manipulation Example</title>
</head>
<body>
    <h1 id="heading">Hello, World!</h1>
    <button onclick="changeText()">Change Text</button>
​
    <script>
        function changeText() {
            document.getElementById('heading').innerText = 'Hello, JavaScript!';
        }
    </script>
</body>
</html>