【css_attribute】
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src='http://code.jquery.com/jquery-1.4.2.js'></script>
<script type='text/javascript'>
$(function(){
$('#bob').children('.divTitle').css('background-color', '#0f0');
});
</script>
</head>
<body>
<div id="bob">
<div class="divTitle">
<a href="#">
<h1>Title</h1>
</a>
</div>
</div>
</body>
</html>
