jquery实现的带反弹动画效果返回顶部插件，jquery网页右下角返回顶部按钮，设计美观大气，先来看看效果：
一部分关键的代码如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery返回顶部插件弹性动画</title>
<link rel="stylesheet" href="css/font-awesome.min.css">
<link rel="stylesheet" href="css/demo.css">
<link rel="stylesheet" href="css/scrollTop_iconStyle.css">
<link rel="stylesheet" href="css/scrollTop_bgStyle.css">
</head>
<body>
<!-- Start Sections -->
<section class="scrollTop_section"><h1>Section 1</h1></section>
<section class="scrollTop_section"><h1>Section 2</h1></section>
<section class="scrollTop_section"><h1>Section 3</h1></section>
<section class="scrollTop_section"><h1>Section 4</h1></section>
<section class="scrollTop_section"><h1>Section 5</h1></section>
<section class="scrollTop_section"><h1>Section 6</h1></section>
<!-- End Sections -->
<!-- Start Div Scroll -->
<div class="scrollTop_top">
<i class="fa fa-angle-double-up fa-4x"></i>
</div>
<!-- End Div Scroll -->
<script src="js/jquery-1.12.1.min.js"></script>
<script src="js/scrollTop_script.js"></script>
</body>
</html>
全部代码：jQuery返回顶部插件弹性动画.zip
