<!DOCTYPE html>
<html lang="en-US">
<body>
<p style="font-size:20px;" title="welcome">Hello World</p>
<p>Click on the button to display the list of attribute names (in array form) used in the above paragraph.</p>
<button onclick="myFunction()">Click Me</button>
<p id="point"></p>
<script>
var x = document.getElementById("point");
var elem = document.getElementsByTagName("p")[0];
function myFunction(){
x.innerHTML = elem.getAttributeNames();
}
</script> </body>
</html>