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Attributes/hasClass

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hasClass( class )

Returns true if the specified class is present on at least one of the set of matched elements.
Arguments:
classString
One CSS class name to be checked for.
Examples:

Looks for the class 'selected' on the matched elements.

$("div#result1").append($("p:first").hasClass("selected").toString());
$("div#result2").append($("p:last").hasClass("selected").toString());
$("div#result3").append($("p").hasClass("selected").toString());

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
                    "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
  <script src="http://code.jquery.com/jquery-latest.js"></script>
  
  <script>
  $(document).ready(function(){
    $("div#result1").append($("p:first").hasClass("selected").toString());
$("div#result2").append($("p:last").hasClass("selected").toString());
$("div#result3").append($("p").hasClass("selected").toString());
  });
  </script>
  <style>
  p { margin: 8px; font-size:16px; }
  .selected { color:red; }
  .highlight { background:yellow; }
  </style>
</head>
<body>
  <p>Hello</p>
  <p class="selected">Goodbye</p>
  <div id="result1">First paragraph has selected class: </div>
  <div id="result2">Last paragraph has selected class: </div>
  <div id="result3">Some paragraph has selected class: </div>
</body>
</html>

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