Selectors/API/jQuery - Sample Code
:contains(text)
            
<!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:contains('John')").css("text-decoration", "underline");
  });
  </script>
  
</head>
<body>
  <div>John Resig</div>
  <div>George Martin</div>
  <div>Malcom John Sinclair</div>
  <div>J. Ohn</div>
</body>
</html>
            
          
[実行結果]