jQuery Events: Set background color of an element when the element gets focus or loses focus

Last update on July 23 2025 12:33:30 (UTC/GMT +8 hours)

jQuery Events : Exercise - 20 with Solution

Set background color of an element when the element (or any elements inside it) gets focus or loses focus.

HTML code:

<body>
 <div>
 First name: <input type="text"><br>
  Last name: <input type="text">
  </div>
  </body>

CSS Code for focused color :

 <style>
  .focusedin {
     background: green;
	   }
  .focusedout {
     background: blue;
	   }
</style>

Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
   <style>
  .focusedin {
    background: green;
  }
  .focusedout {
    background: blue;
  }
  </style>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
  <meta charset="utf-8">
  <title>Set background color of an element when the element gets focus or loses focus</title>
</head>
<body>
 <div>
 First name: <input type="text"><br>
 Last name: <input type="text">
</div>
</body>
</html>

CSS Code:

.focusedin {
    background: green;
  }
  .focusedout {
    background: blue;
  }

JavaScript Code :


$("div").focusin(function(){
        $(this).attr('class', 'focusedin');
    });

 $("div").focusout(function(){
        $(this).attr('class', 'focusedout');
    });

Go to:

PREV : Test if an input has focus?
NEXT : Display the tag name of the clicked element.

Live Demo:

See the Pen jquery-events-exercise-20 by w3resource (@w3resource) on CodePen.

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