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<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.3/jquery.min.js"></script> <script> $(document).ready(function(){ // hide #back-top first $("#back-top").hide(); // fade in #back-top $(function () { $(window).scroll(function () { if ($(this).scrollTop() > 100) { $('#back-top').fadeIn(); } else { $('#back-top').fadeOut(); } }); // scroll body to 0px on click $('#back-top a').click(function () { $('body,html').animate({ scrollTop: 0 }, 800); return false; }); }); }); </script> 滚动页面到顶部的动画

发现一个特殊的许可证WTFPL http://www.wtfpl.net/ 不想翻译了，直接贴出来： About the WTFPL Posted December 26th, 2012 by Sam Hocevar. The Do What The Fuck You Want To Public License (WTFPL) is a free software license. There is a long ongoing battle between GPL zealots and BSD fanatics, about which license type is the most free of the two. In fact, both license types have unacceptable obnoxious clauses (such as reproducing a huge disclaimer that is written in all caps) that severely restrain our freedoms.

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