<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<title></title>
<link rel="stylesheet" href="imooc.css" type="text/css">
<script src="https://www.imooc.com/static/lib/jquery/1.9.1/jquery.js"></script>
</head>
<body>
<h2>内容筛选器</h2>
<h3>:contains/:has</h3>
<div class="left">
<div class="div">
<p>:contains</p>
</div>
<div class="div">
<p>:contains</p>
</div>
<div class="div">
<p>
<span>:has</span>
</p>
</div>
<div class="div">
<p>:contains</p>
</div>
</div>
<script type="text/javascript">
//查找所有class='div'中DOM元素中包含"contains"的元素节点
//并且设置颜色
?.css("color", "#CD00CD");
</script>
<script type="text/javascript">
//查找所有class='div'中DOM元素中包含"span"的元素节点
//并且设置颜色
?.css("color", "blue");
</script>
<h3>:parent/:empty</h3>
<div class="left">
<div class="aaron">
<a>:parent</a>
</div>
<div class="aaron">
<a>:parent</a>
</div>
<div class="aaron">
<a>:parent</a>
</div>
<div class="aaron">
<a></a>
</div>
</div>
<script type="text/javascript">
//选择所有包含子元素或者文本的a元素
//增加一个蓝色的边框
?.css("border", "3px groove blue");
</script>
<script type="text/javascript">
//找到a元素下面的所有空节点(没有子元素)
//增加一段文本与边框
?.text(":empty").css("border", "3px groove red");
</script>
</body>
</html>
.left {
width: auto;
height: 120px;
}
.left div {
width: 70px;
height: 70px;
padding: 5px;
margin: 5px;
float: left;
background: #bbffaa;
border: 1px solid #ccc;
}
.bottom {
width: 800px;
}
.bottom div,
.bottom span {
display: block;
width: 80px;
height: 80px;
margin: 5px;
background: #bbffaa;
float: left;
font-size: 14px;
}
.bottom .small {
width: 60px;
height: 25px;
font-size: 12px;
background: #fab;
}
