【class】
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src='http://code.jquery.com/jquery-1.8.3.js'></script>
<style type='text/css'>
#item {
border: 3px solid white;
}
#item.active {
border-color: #A8402A;
}
</style>
<script type='text/javascript'>
$(window).load(function(){
$('#item').click(function() {
$(this).toggleClass('active');
});
});
</script>
</head>
<body>
<div id="item">Hello</div>
</body>
</html>
