.eq()

.eq( index ) Returns: jQuery

Description: Reduce the set of matched elements to the one at the specified index.

  • version added: 1.1.2.eq( index )

    indexAn integer indicating the 0-based position of the element.

  • version added: 1.4.eq( -index )

    -indexAn integer indicating the position of the element, counting backwards from the last element in the set.

Given a jQuery object that represents a set of DOM elements, the .eq() method constructs a new jQuery object from one of the matching elements. The supplied index identifies the position of this element in the set.

Consider a page with a simple list on it:

  <ul>
    <li>list item 1</li>
    <li>list item 2</li>
    <li>list item 3</li>
    <li>list item 4</li>
    <li>list item 5</li>
  </ul>

We can apply this method to the set of list items:

  $('li').eq(2).css('background-color', 'red');

The result of this call is a red background for item 3. Note that the supplied index is zero-based, and refers to the position of the element within the jQuery object, not within the DOM tree.

If a negative number is provided, this indicates a position starting from the end of the set, rather than the beginning. For example:

  $('li').eq(-2).css('background-color', 'red');

This time list item 4 is turned red, since it is two from the end of the set.

Example:

Turn the div with index 2 blue by adding an appropriate class.

<!DOCTYPE html>
<html>
<head>
  <style>
  div { width:60px; height:60px; margin:10px; float:left;
        border:2px solid blue; }
  .blue { background:blue; }
  </style>
  <script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
	<div></div>
  <div></div>
  <div></div>

  <div></div>
  <div></div>
  <div></div>
<script>

    $("div").eq(2).addClass("blue");
</script>
</body>
</html>

Demo: