fixedBox固定div漂浮代码支持ie6以上大部分主流浏览器_javascript技巧
<!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>fixedBox</title> <script id="xcore" type="text/javascript" src="http://www.haiqiancun.com/xWidget-0.1/xcore.js"></script> <style> *{margin:0px;padding:0px;} body{height:3000px;} </style> <script> $(function() { $(".fixedBox").each(function() { var self = $(this); var id = self.attr("id") || 'fixedBox_' + Math.round(Math.random() * 100000); self.attr("id", id); var fb = $("#" + id); var mt = Math.floor(fb.css("margin-top").substring(2, 0)) || 0; var cd = $('<div style="height:' + fb.outerHeight() + 'px;display:none;' + fb.attr("style") + '"> </div>'); fb.after(cd); fb.css({ 'z-index': 999 }).data({ 'top': fb.offset().top, 'left': fb.offset().left }); $(window).scroll(function() { var pt = fb.data('top'); var pl = fb.data('left'); var st = $(document).scrollTop() - 10; var h = $(document).height(); if (st > pt || st == pt) { cd.show(); if ((st + self.outerHeight()) > h) { self.css({ position: 'fixed', top: (h - (st + self.outerHeight())) }); } else { self.css({ position: 'fixed', top: 0 - mt }); } } else { cd.hide(); self.css({ position: 'relative', top: 0 }); } }) }) }) </script> </span> </head> <body> <div style="width:90%;margin:0px auto;"> <div class="fixedBox" style="margin-top:50px; width:100%; overflow:hidden;background:#fff; font-size:12px;"> <script> $(function(){ $(".fixedBox").each(function(){ var self= $(this); var id = self.attr("id")||'fixedBox_'+Math.round(Math.random()*100000); self.attr("id",id); var fb = $("#"+id); var mt = Math.floor(fb.css("margin-top").substring(2,0))||0; var cd = $('<div style="width:100%;height:'+fb.outerHeight()+'px;display:none;'+fb.attr("style")+'"> </div>'); fb.after(cd); fb.css({'z-index':999}).data({'top':fb.offset().top,'left':fb.offset().left}); $(window).scroll(function(){ var pt = fb.data('top'); var pl = fb.data('left'); var st = $(document).scrollTop()-10; var h = $(document).height(); if(st>pt||st==pt){ cd.show(); if((st+self.outerHeight())>h){ self.css({position:'fixed',top:(h-(st+self.outerHeight()))}); }else{ self.css({position:'fixed',top:0-mt}); } }else{ cd.hide(); self.css({position:'relative',top:0}); } }) }) }) </script> </div> 例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例子例 </div> </body> </html>

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