jQuery addClass example

Change class name on click in jQuery

by felipero7

HTML

<!DOCTYPE html>
<html>
<head>
<style> 

</style>

</head>
<body>

<p>The first paragraph 1.</p>
<p>The second paragraph.</p>
<p>The third paragraph.</p>
<p>The fourth paragraph.</p>
<p>The first paragraph.</p>
<p>The second paragraph.</p>
<p>The third paragraph.</p>
<p>The fourth paragraph.</p>
<p>The first paragraph.</p>
<p>The second paragraph.</p>
<p>The third paragraph.</p>
<p>The fourth paragraph.</p>

</body>
</html>

JavaScript

$( "p" ).first().css('color', '#0000FF');
$( "p:nth-child(4n+1)" ).css('color', '#00FF00');
$( "p:nth-child(4n+2)" ).css('color', '#0000FF');