转载自:  http://www.runoob.com/jquery/sel-has.html

<DOCTYPE html>

<html>

<head>

<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js">

</script>
<script>
$(document).ready(function(){
  $("p:has(span)").css("border","solid red");
});
</script>
</head>
<body>
<p><span>This is a span element inside a p element.</span></p>
<p>This is a p element with no span element.</p>
</body>
</html>