<!DOCTYPE html>
<html lang="en-US">
<body>
<div>I'm div</div>
<p>Click the button to find the parentElement of div tag.</p>
<button onclick="myFunction()">Click Me</button>
<p id="point"></p>
<script>
var x = document.getElementById("point");
var y = document.getElementsByTagName("div")[0];
function myFunction(){
x.innerHTML = y.parentElement.nodeName;
}
</script> </body>
</html>