jquery header选择器 语法
作用：:header 选择器选取所有标题元素（h1 - h6）。广州大理石机械构件
语法：$(":header")
jquery header选择器 示例
<html>
<head>
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(":header").css("background-color","#B2E0FF");
});
</script>
</head>
<body>
<html>
<body>
<h1>Welcome to My Homepage</h1>
<p class="intro">My name is Donald</p>
<p>I live in Duckburg</p>
<p>My best friend is Mickey</p>
<div id="choose">
Who is your favourite:
<ul>
<li>Goofy</li>
<li>Mickey</li>
<li>Pluto</li>
</ul>
</div>
</body>
</html>
</body>
</html>