Use JavaScript to change the text size of the <p>
element to 40 pixels.
<body>
<p id="demo">Hi.</p>
<script>
document.getElementById("demo").@(5).@(8) = "40px";
</script>
</body>
<body>
<p id="demo">Hi.</p>
<script>
document.getElementById("demo").style.fontSize = "40px";
</script>
</body>