Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html>
<html>
<body>

<p>Hello World!</p>

<p>How many paragraphs in this document?</p>

<p>This example demonstrates the length property of a nodelist.</p>

<p id="demo"></p>

<script>
var myNodelist = document.getElementsByTagName("p");
document.getElementById("demo").innerHTML = myNodelist.length;
</script>

</body>
</html>