Javascript imitation lyrics intelligent scrolling code_text effects

Make sure the viewer can see the text clearly and then continue to scroll up and down.

<title>Text scrolling</title> <style type="text/css"> #infozone{font-size:12px;color:#aa6;overflow:hidden;width:98px;height:20px;} #infozone div{height:20px;line-height:20px;white-space:nowrap;overflow:hidden;} </style> <div id="infozone"> <div></div>Blue and white porcelain (Jay Chou) <div></div>With you in my life (Shui Mu Nian Hua) <div> </div> Myth (Sun Nan, Han Hong) <br><input onclick="runEx('runcode41384')" type="button" value="运行代码"><input onclick="doCopy('runcode41384')" type="button" value="复制代码"> <input onclick="doSave(runcode41384)" type="button" value="保存代码"> <a href="http://www.jb51.net/article/23421.htm" title="查看具体详情" target="_blank">[Ctrl A select all Note: </a>If you need to introduce external Js, you need to refresh to execute </div>]<script type="text/javascript"> var tc; window.onload=function(){ var o=document.getElementById('infozone');hscroll(o); window.setInterval(function(){window.clearTimeout(tc);o.firstChild.style.marginLeft='0px';scrollup(o,20,0);},8000); } function scrollup(o,d,c){ if(d==c){ var t=o.firstChild.cloneNode(true); o.removeChild(o.firstChild);o.appendChild(t); t.style.marginTop=o.firstChild.style.marginTop='0px'; hscroll(o); } else{ ch=false;var s=3,c=c+s,l=(c>=d?c-d:0); o.firstChild.style.marginTop=-c+l+'px'; window.setTimeout(function(){scrollup(o,d,c-l)},50); } } function hscroll(o){ var w1=o.firstChild.offsetWidth,w2=o.offsetWidth; if(w1<=w2)return; tc=window.setTimeout(function(){hs(o,w1-w2,0,w1-w2)},3500); } function hs(o,d,c,p){ c++;var t=(c>0?-c:c);o.firstChild.style.marginLeft=t+'px'; if(c==d){if(d==0){tc=window.setTimeout(function(){hs(o,p,0,p)},2500);}else tc=window.setTimeout(function(){hs(o,0,-p,p)},3500);} else tc=window.setTimeout(function(){hs(o,d,c,p)},5); } </script>