在网上找来段使用jQuery火箭图标返回顶部代码，感觉比较酷，比较炫，大概样式如下，
代码如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>jQuery火箭图标返回顶部代码 - 站长素材</title> <!--script src="js/jquery.js?v=1.83.min" type="text/javascript"></script--> <script src="http://common.cnblogs.com/script/jquery.js?v=1.7.min" type="text/javascript"></script> <style type="text/css"> body{height:3000px;} /*回到顶部*/ #rocket-to-top div { left: 0; margin: 0; overflow: hidden; padding: 0; position: absolute; top: 0; width: 149px; } #rocket-to-top .level-2 { background: url("http://images.cnblogs.com/cnblogs_com/mq0036/508398/o_rocket_button_up.png") no-repeat scroll -149px 0 transparent; display: none; height: 250px; opacity: 0; z-index: 1; } #rocket-to-top .level-3 { background: none repeat scroll 0 0 transparent; cursor: pointer; display: block; height: 150px; z-index: 2; } #rocket-to-top { background: url("http://images.cnblogs.com/cnblogs_com/mq0036/508398/o_rocket_button_up.png") no-repeat scroll 0 0 transparent; cursor: default; display: block; height: 250px; margin: -125px 0 0; overflow: hidden; padding: 0; position: fixed; right: 0; top: 80%; width: 149px; z-index: 11; } </style> <script type="text/javascript"> // jQuery火箭图标返回顶部代码 $(function() { var e = $("#rocket-to-top"), t = $(document).scrollTop(), n, r, i = !0; $(window).scroll(function() { var t = $(document).scrollTop(); t == 0 ? e.css("background-position") == "0px 0px" ? e.fadeOut("slow") : i && (i = !1, $(".level-2").css("opacity", 1), e.delay(100).animate({ marginTop: "-1000px" }, "normal", function() { e.css({ "margin-top": "-125px", display: "none" }), i = !0 })) : e.fadeIn("slow") }), e.hover(function() { $(".level-2").stop(!0).animate({ opacity: 1 }) }, function() { $(".level-2").stop(!0).animate({ opacity: 0 }) }), $(".level-3").click(function() { function t() { var t = e.css("background-position"); if (e.css("display") == "none" || i == 0) { clearInterval(n), e.css("background-position", "0px 0px"); return } switch (t){ case "0px 0px": e.css("background-position", "-298px 0px"); break; case "-298px 0px": e.css("background-position", "-447px 0px"); break; case "-447px 0px": e.css("background-position", "-596px 0px"); break; case "-596px 0px": e.css("background-position", "-745px 0px"); break; case "-745px 0px": e.css("background-position", "-298px 0px"); } } if (!i) return; n = setInterval(t, 50), $("html,body").animate({scrollTop: 0},"slow"); }); }); </script> </head> <body> <center> <h2>jQuery火箭图标返回顶部代码</h2> <h3>滚动滑动条后，查看右下角查看效果。很炫哦！！</h3> </center> <!-- 火箭 --> <div style="display: none;" id="rocket-to-top"> <div style="opacity:0;display: block;" class="level-2"></div> <div class="level-3"></div> </div> <div style="text-align:center;margin:50px 0; font:normal 14px/24px 'MicroSoft YaHei';"> <p>适用浏览器：IE8、360、FireFox、Chrome、Safari、Opera、傲游、搜狗、世界之窗.</p> <p>来源：<a href="http://sc.chinaz.com/" target="_blank">站长素材</a></p> </div> </body> </html>
我在本地测试使用的jQuery是1.8的，同样也可以使用1.7版本的
参考出处：http://sc.chinaz.com/jiaoben/140429325430.htm