$(document).ready(function () {
$("#checkP").click(function () {
var hasClass = $("p").hasClass("default");
alert("p has class default ?? : " + hasClass);
});
$("#checkSpan").click(function () {
var hasClass = $("span").hasClass("default");
alert("span has class default ?? : " + hasClass);
});
});
<html>
<head>
<title>hasClass</title>
</head>
<body>
<p class="default">This is paragraph element.</p>
<span>This is span element.</span><br /><br />
<input type="button" id="checkP" value="Check p for default class" />
<input type="button" id="checkSpan" value="Check span for default class" />
</body>
</html>
.default
{
color:Red;
}