​x
 
<html>
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
  $("button").click(function(){
    x=$("p").position();
    alert("Left position: " + x.left + " Top position: " + x.top);
  });
});
</script>
</head>
<body>
<p>This is a paragraph.</p>
<button>获得 p 元素的位置坐标</button>
</body>
</html>
​