Selects all elements that are the nth child of their parent in relation to siblings with the same element name.
Because jQuery's implementation of :nth- selectors is strictly derived from the CSS specification, the value of n is "1-indexed", meaning that the counting starts at 1. For other selector expressions such as :eq() or :even jQuery follows JavaScript's "0-indexed" counting.
Further discussion of this usage can be found in the W3C CSS specification.
jQuery( ":nth-of-type(index/even/odd/equation)" )
version added: 1.9
Examples:
Find each span that is second in relation to its sibling spans.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>nth-of-type demo</title>
<style>
.nth {
color: red;
}
</style>
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
<div>
<span>John</span>,
<b>Kim</b>,
<span>Adam</span>,
<b>Rafael</b>,
<span>Oleg</span>
</div>
<div>
<b>Dave</b>,
<span>Ann</span>
</div>
<div>
<i><span>Maurice</span></i>,
<span>Richard</span>,
<span>Ralph</span>,
<span>Jason</span>
</div>
<script>
$( "span:nth-of-type(2)" )
.append( "<span> is 2nd sibling span</span>" )
.addClass( "nth" );
</script>
</body>
</html>
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