Js仿新浪微博首页内容滚动

2019-11-21 00:09:27

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然后在新浪微博首页仍然在使用哦，可能我写的代码还不是最佳优化状态，但是我觉得这已经不错了。

<!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=gb2312" /> <title>仿新浪微博首页内容滚动</title> <style type="text/css"> body{background:#efc;} </style> </head> <body>  <div class="col-act"> <div class="colAct-list clear" id="actDbList" >  <dl class="clear" > <dt>-------------------------------------</dt> <dd>---------------------------------------</dd> <dd>---------------------------------------</dd> </dl>  </div> </div> <script type="text/javascript"> /*--------------新鲜事滚动----------------*/ var _num=_n=0, _autohidden,_arrObj,_oHeight; function flilter(elem,i,t){ var o=document.getElementById("actDbList"); if(!o) return false; var elem=o.getElementsByTagName("dl")[0]; if (elem.movement) { clearTimeout(elem.movement); } if (!_n===0) _n = parseInt(elem['style'][!-[1,]?'filter':'opacity']); if(_n>=i){ return true; } if (_n < i) { var dist = Math.ceil((i - _n)/10); _n = _n + dist; } if (_n > i) { var dist = Math.ceil((i - _n)/10); _n = _n - dist; } elem['style'][!-[1,]?'filter':'opacity']=!-[1,]?'alpha(opacity='+_n+')':_n/100; var repeat = "flilter('"+elem+"',"+i+","+t+")"; elem.movement = setTimeout(repeat,t); } function moveElement(elem,final_y,interval) { var o=document.getElementById("actDbList"); if(!o) return false; var elem=o.getElementsByTagName("dl")[0]; if (elem.movement) { clearTimeout(elem.movement); } if (!elem.style.height) { elem.style.height = "0"; } var ypos = parseInt(elem.style.height); if (ypos == final_y) { flilter(o.getElementsByTagName("dl")[0],100,40); return true; } if (ypos < final_y) { var dist = Math.ceil((final_y - ypos)/10); ypos = ypos + dist; } if (ypos > final_y) { var dist = Math.ceil((ypos - final_y)/10); ypos = ypos - dist; } elem.style.height = ypos + "px"; var repeat = "moveElement('"+elem+"',"+final_y+","+interval+")"; elem.movement = setTimeout(repeat,interval); } function step(obj){ var _arrO=document.getElementById("DB"); if(!_arrO) return false; var _arr=_arrO.getElementsByTagName("dl"); if (_autohidden) { clearInterval(_autohidden); } _n=0; _arrObj=_arr[_num]; _max=_arr.length; var o=document.getElementById(obj); var newNode= document.createElement("dl"); o.insertBefore(newNode,o.getElementsByTagName("dl")[0]); var s=o.getElementsByTagName("dl")[0]; s.style.cssText="height:0;opacity:0;filter:Alpha(opacity=0);overflow:hidden"; s.style.className="clear"; s.innerHTML=_arrObj.innerHTML; _oHeight=_arrObj.offsetHeight; moveElement(s,_oHeight,10); var lastNode=o.getElementsByTagName("dl")[(o.getElementsByTagName("dl").length-1)]; var reLastNode=o.removeChild(lastNode); _num++; if(_num>=_max){ _num=0; } stopMove("actDbList"); _autohidden = setTimeout(function(){step(obj);},5000); } function stopMove(o){ var o=document.getElementById(o); if(!o) return false; o.onmouseover=function(){ if (_autohidden) { clearTimeout(_autohidden); } } o.onmouseout=function(){ _autohidden = setTimeout(function(){step("actDbList");},5000); } } /*--------------新鲜事滚动结束----------------*/ _autohidden = setInterval(function(){step("actDbList");},1000); stopMove("actDbList"); </script> <div class="" id="DB">  <dl > <dt>我记得我爱过（电视剧《泡沫之夏》主题曲）-何润东</dt> </dl>  <dl > <dd>#我最喜欢的书#绝对不是言情和校园谈恋爱的那种，就是无聊的，只有看那些书的时候，我也一个字看不进。其它的书还都蛮喜欢的，嘿嘿</dd> </dl>  <dl > <dt>等会儿又要飞了，好想死。旁边放把剪刀，实在写不出东西来，随时准备从天灵盖插下去……</dt> </dl>  <dl > <dt>有人质疑我"发福了，老了，唱不动了"。我早已不把这些话放在心上。</dt> </dl>  <dl > <dt>记录心情，记录生活点滴，欢迎走进腾讯微博。</dt> <dd>欢乐无从，快乐从心！</a> </dd> </dl>  </div> </body> </html>

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