只需一句jQuery代碼實現返回頂部
效果體驗：
http://hovertree.com/texiao/yestop/
使用方法：
只需引用jQuery庫和YesTop插件(jquery.yestop.js)，然後一句代碼就可以實現返回頂部：
引用代碼：
<script src="http://hovertree.com/ziyuan/jquery/jquery-1.11.3.min.js"></script>
<script src="http://hovertree.com/texiao/yestop/inc/jquery.yestop.js"></script>
使用代碼：<script>
$(document).ready(function () { $.fn.yestop(); })
</script>
也就是：
$.fn.yestop();
這句代碼就可以了。
當然還有高級的設置，如換圖片，設置圖標為圓形，設置位置，設置時間等等。
例如：
$.fn.yestop({
"yes_image": "http://hovertree.com/texiao/yestop/inc/yestoprocket.png"
, "yes_width": "48px", "yes_height": "125px" , "yes_time": 200
,"yes_bottom":"20px","yes_right":"10px"
});
詳情請查看其他Demo。
完整代碼，保存到HTML文件就可以體驗效果：
<!DOCTYPE html>
<html>
<head><meta charset="UTF-8">
<title>YesTop - HoverTree</title><meta name="viewport" content="width=device-width, initial-scale=1.0">
<script type="text/javascript" src="http://hovertree.com/ziyuan/jquery/jquery-1.11.3.min.js"></script>
<script type="text/javascript" src="http://hovertree.com/texiao/yestop/inc/jquery.yestop.js"></script>
<style>
body {
margin: 0px;font-family:Arial
}a{color:blue}
</style>
</head>
<body>
<div style="text-align:center;width:100%;margin:0px auto;">
<h1>YesTop</h1>
A jQuery Plugin<br />
<a href="http://hovertree.com/texiao/yestop/">Demo 1</a> <a href="http://hovertree.com/texiao/yestop/demo2.htm">Demo 2</a> <a href="http://hovertree.com/texiao/yestop/demo3.htm">Demo 3</a>
<a href="http://hovertree.com/texiao/yestop/demo4.htm">Demo 4</a> <a href="http://hovertree.com/h/bjaf/topimage.htm">Images</a>
</div>
<div style="height: 360px;background-color: #66FF66;">
</div>
<div style="width:100%;text-align:center;height:200px">© hovertree.com</div>
<div style="height: 200px; visibility: visible; background-color: Olive">
</div><div style="height:200px;background-color:burlywood"></div><div style="height:200px;background-color:darkorchid"></div>
<div style="height: 200px; visibility: visible; background-color:gray">
</div>
<div style="height:200px;background-color:blue"></div>
<div style="height:200px;background-color:red"></div>
<div style="height:200px;background-color:yellow"></div>
<div style="height:200px;background-color:yellowgreen"></div>
<div style="height:800px;background-color:white"></div>
<script type="text/javascript">
$(document).ready(function () { $.fn.yestop(); })
</script>
</body>
</html>