andSelf()

<script language="javascript" src="jquery-1.4.2.min.js"></script>
<script type="text/javascript">
$(function(){
   $("div").find("p").andSelf().addClass("border"); 
});
</script>
</head>

<body>
<div>
  <p>First Paragraph</p>
  <p>Second Paragraph</p>
</div> 
</body>
</html>

 使用andSelf()

<div class="border">
  <p class="border">First Paragraph</p>
  <p class="border">Second Paragraph</p>
</div>

 

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