今天查看了下新浪的js代码，发现一个背投的广告类代码，不论是从学习角度还是使用角度都是不错的，但发现了一个问题，会被屏蔽的。下面是具体的js类代码
代码如下:/* 轮播背投类 RotatorPB v3.1 Update by Dakular <shuhu@staff.sina.com.cn> 2008-8-25 格式：new RotatorPB(广告数组) 说明：第一次访问随机出现，以后访问顺序轮播；自动过滤过期广告；cookie时间24小时；商业广告数量不足时不显示 */ if(typeof(RotatorPB)!=’function’){ var RotatorPB=function (rad){ this.ary = new Array(); this.date = new Date(); this.w = rad.width; this.h = rad.height; this.num = rad.num; this.o = rad.length; this.id = RotatorPB.id++; this.m = ‘rpb_’+this.id; this.n = new Array(); this.L = new Date(); this.e = 0; var f; var D = false; var nn = 0; //过滤无效广告 for(var i=0; i<rad.length; i++){ var start = RotatorPB.strToDate(rad[i][2].replace(‘<startdate>’,”).replace(‘</startdate>’,”)); var end = RotatorPB.strToDate(rad[i][3].replace(‘<enddate>’,”).replace(‘</enddate>’,”),true); if(this.date>start && this.date<end && (this.num==null || this.ary.length<this.num) ){ this.ary.push([rad[i][0], rad[i][1], rad[i][4]]); } } this.o = this.ary.length; //取id for(var i=0;i<this.o;i++){ f=this.m+’_’+(i+1); g=RotatorPB.G(f); if(g!=”){ this.n[i]=g; D=true; }else { this.n[i]=0; } } if(!D){ var r=Math.ceil(Math.random()*this.o); var t=this.m+’_’+r; RotatorPB.S(t,this.L.getTime(),1440); this.e=r; if(this.o==1){RotatorPB.S(‘s_dl’,r,1440);} //return r; }else { var R=this.n.join(‘,’).split(‘,’); var k=R.sort(); var max=Number(k[k.length-1]); var min=Number(k[0]); var F; for(var i=0;i<this.n.length;i++){ if(max==this.n[i]){ F=i+1; break; } } if(typeof(F)!=’undefined’){ G=this.m+’_’+F; H=Number(RotatorPB.G(G)); I=F%this.o+1; J=this.m+’_’+I; RotatorPB.S(J,this.L.getTime(),1440); if(this.o==1){ I=-RotatorPB.G(‘s_dl’); if(I==0){I=1;RotatorPB.S(‘s_dl’,1,1440);} RotatorPB.S(‘s_dl’,I,1440); } this.e=I; //return I; } } //Show AD if(this.e==0 || this.ary.length==0) return; //如果没有广告则不显示 if(this.e==-1) return; //当只有一个广告时：始终显示第一个/奇数次刷新显示 var n = this.e-1; var btsrc = this.ary[n][0]; var bturl = this.ary[n][1]; var bttype = btsrc.substring(btsrc.length-3).toLowerCase(); if(bttype==’.js’){ //js document.write(‘<script language=”javascript” type=”text/javascript” src=”‘+btsrc+\’”></scr’+’ipt>’); return; }else if(bttype!=’htm’ && bttype!=’tml’){ sinabturl = “http://d1.sina.com.cn/d1images/pb/pbv4.html?”+bturl+”${}”+bttype+”${}”+btsrc; }else{ sinabturl = btsrc; } try{ aryADSeq.push(“openWindowBack()”); }catch(e){ openWindowBack(); } if(this.ary[n][2]!=””){ //监测计数 var oImg = new Image(); oImg.src = this.ary[n][2]; } }; RotatorPB.id=1; RotatorPB.G=function (N){ var c=document.cookie.split(“; “); for(var i=0;i<c.length;i++){ var d=c[i].split(“=”); if(d[0]==N)return unescape(d[1]); }return ”; }; RotatorPB.S=function (N,V,Q){ var L=new Date(); var z=new Date(L.getTime()+Q*60000); document.cookie=N+”=”+escape(V)+”; path=/; expires=”+z.toGMTString()+”;”; }; RotatorPB.strToDate = function(str,ext){ var arys = new Array(); arys = str.split(‘-‘); var newDate = new Date(arys[0],arys[1]-1,arys[2],9,0,0); if(ext){ newDate = new Date(newDate.getTime()+1000*60*60*24); } return newDate; } var openWindowBack = function(){ var popUpWin2 = open(sinabturl, (window.name!=”popUpWin2″)?”popUpWin2″:””, “width=1,height=1,top=4000,left=3000”); } };
具体的调用代码：
代码如下:<script src=”rotator_pb.js”></script> <SCRIPT language=javascript type=text/javascript> //<![CDATA[ var rpb = new Array(); rpb.num = 2; //轮播数量 <!–2220E7B88D58–>//背投广告创意 rpb.push([“http://img.phpstudy.net/demo/images/beitou.jpg”, “”, “<startdate>2009-4-15</startdate>”, “<enddate>2009-8-15</enddate>”, “”]); <!–$$ litong/2009-4-15 ~ 2009-8-15/B $–> new RotatorPB(rpb); //]]> </SCRIPT>
上面的beitou.jpg是图片的地址，后面的是链接， 开始日期 结束日期什么的大家参考下就可以了。
—-想了解更多的linux相关异常处理怎么解决关注
