Tryit Editor v2.9

Edit This Code:

<!DOCTYPE html>
<html>
<body>

<h1 id="demo">This is a Heading</h1>

<p>This is a paragraph.</p>

<script>
document.getElementById("demo").innerHTML = "Hello World!";
</script>

</body>
</html>

<!DOCTYPE html>
<html>
<body>

<h1 id="demo">This is a Heading</h1>

<p>This is a paragraph.</p>

<script>
document.getElementById("demo").innerHTML = "Hello World!";
</script>

</body>
</html>