yige.org 试一个

<html>
<head>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
  $("button").click(function(){
    $("p").offset($("span").offset());
  });
});
</script>
</head>
<body>
<p>This is a paragraph.</p>
<button>为段落设置偏移</button>
<span id="middlepos" style="position:absolute;left:100px;top:150px;">This is a span</span>
</body>
</html>

结果:

编辑上面的代码，点击查看结果。

yige.org - 试一个