Alert on blur

HTML

<input type="textbox" id="abcd">
<input type="textbox" id="username">
<div id="output"></div>

JavaScript

$("#username").blur(
             function (event) {
                $('#output').append('Hello<br> - Blur'); 
             }
         );
         
$("#username").focus(
             function (event) {
                $('#output').append('Hello<br> - Focus'); 
             }
         );
         
$("#abcd").blur(
             function (event) {
                $('#output').append('Hello There - Blur<br>'); 
             }
         );
         
$("#abcd").focus(
             function (event) {
                $('#output').append('Hello There - Focus<br>'); 
             }
         );