<html>
<head>
<script src="https://libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("button").click(function(){
x=$("p").position();
$("#span1").text(x.top);
$("#span2").text(x.left);
});
});
</script>
</head>
<body>
<div style="border:1px solid black;padding:100px;margin:50px;">
<p>Position of this paragraph (relative to its parent element) is <span id="span1">x</span> top and <span id="span2">x</span> left.</p>
<button>Get position</button>
</div>
</body>
</html>