Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html>
<html>
<head>
<script>
function displayDate() {
    document.getElementById("demo").innerHTML = Date();
}
</script>
</head>
<body>

<h1>My First JavaScript</h1>
<p id="demo">This is a paragraph.</p>

<button type="button" onclick="displayDate()">Display Date</button>

</body>
</html>