jQuery: Count all elements within a division

Last update on July 22 2025 13:06:01 (UTC/GMT +8 hours)

jQuery Fundamental - I : Exercise-18

Using jQuery count all elements within a division.

<body>
<div  id="iddiv"> 
<span>This is a span</span>
<p>This is a Paragraph</p>
<button id="button1">Click to see the effect</button> 
</div>
</body>

Sample solution :

HTML Code :

<!DOCTYPE html>
<html>
<head>
<script src="https://code.jquery.com/jquery-git.js"></script>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Count all elements within a division.</title>
</head>
<body>
<div  id="iddiv">
<span>This is a span</span>
<p>This is a Paragraph</p>
<button id="button1">Click to see the effect</button>
</div>
</body>
</html>

CSS Code:

button {
    display: block;
    margin: 20px 0 0 0;
    clear: both
    }  


   span, p {
    width: 160px;
    height: 40px;
    float: left;
    padding: 10px;
    margin: 10px;
    background-color: #B0E0E6
  }

JavaScript Code :

$('#button1').click(function(){ 

  var elementCount = $( "#iddiv" ).find( "*" ).css( "border", "2px solid blue" ).length;

  $( "body" ).prepend( "" + elementCount + " element(s) found" );
});

Go to:

PREV : Using jQuery count every element (including head, body, etc.) in the document.
NEXT : Using jQuery click the button to animate the paragraph element with a number of different properties.

See the Pen jquery-fundamental-exercise-18 by w3resource (@w3resource) on CodePen.

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