How to Get the Button ID On Button Click Event Using Jquery

HTML Code:

<input type="button" value="button"  id="btn"/>

Jquery Script:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>

<script type="text/javascript">

$(document).ready(function () {

$('body').on('click', 'input[type=button]', function () {

alert(this.id); // <-- this refers to current clicked input button

});

});

</script>

Output: