Use JavaScript to change the HTML content of the <p>
element to "Hello World!".
<body>
<p id="demo">Hi.</p>
<script>
document.@(14)("demo").innerHTML = "Hello World!";
</script>
</body>
<body>
<p id="demo">Hi.</p>
<script>
document.getElementById("demo").innerHTML = "Hello World!";
</script>
</body>