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开发学院网页设计JavaScript JavaScript 对联广告、漂浮广告封装类(IE,FF,Oper... 阅读

JavaScript 对联广告、漂浮广告封装类(IE,FF,Opera,Safari,Chrome)

 2009-05-04 20:04:38 来源:WEB开发网   
核心提示:代码: 程序代码/*对联广告调用第一个参数为ID,第二个参数图片,第三个参数广告距离顶部的距离,第四个参数表示左右(true代表左,false代表右),第五个参数对联广告的宽度*/new float_ad("ad_l","<img src='/tech/UploadPic/2

代码:


 程序代码
/*
对联广告调用
第一个参数为ID,第二个参数图片,第三个参数广告距离顶部的距离,
第四个参数表示左右(true代表左,false代表右),第五个参数对联广告的宽度
*/
new float_ad("ad_l","<img src='/tech/UploadPic/2010910/201091020438506.gif' />",50,true,64);
new float_ad("ad_r","<img src='/tech/UploadPic/2010910/201091020438506.gif' />",50,false,64);

/*
漂浮广告调用
第一个参数中的url代表漂浮广告的图片URL地址(必选项),link链接到页面网址,alt图片提示文字,width图片的宽度(可选项,默认120),heihgt图片的高度(可选项,默认120)
第二个参数中的代表漂浮广告的初始位置,由参数left和top指定
第三个参数代表浮动速度,0为静止,越小浮动速度越快
*/
new move_ad({url:"http://tech.cncms.com/tech/UploadPic/2010910/201091020438506.gif",link:"http://jzyouth.org.cn/html/zixun/zuixingonggao/2009327/zxgg47926848.html",alt:"关于招募“2009中国·大连国际樱桃节”志愿者的通知",width:200,height:200},{left:40,top:160},20);

//核心代码
function $(element){
   if(arguments.length>1){
     for(var i=0,elements=[],length=arguments.length;i<length;i++)
       elements.push($(arguments[i]));
     return elements;
   }
   if(typeof element=="string")
     return document.getElementById(element);
   else
     return element;
}
Function.PRototype.bind=function(object){
   var method=this;
   return function(){
     method.apply(object,arguments);
   }
}
var Class={
   create:function(){
     return function(){
       this.initialize.apply(this,arguments);
     }
   }
}
Object.extend=function(destination,resource){
   for(var property in resource){
     destination[property]=resource[property];  
   }
   return destination;
}
//对联广告类36
var float_ad=Class.create();
float_ad.prototype={
   initialize:function(id,content,top,left,width){
     document.write('<div id='+id+' style="position:absolute;">'+content+'</div>');
     this.id=$(id);
     this.top=top;
     if(!!left){
       this.id.style.left="8px";  
     }else{
       this.id.style.left=(document.documentElement.clientWidth-width-8)+"px";
       window.onresize=function(){
         this.id.style.left=(document.documentElement.clientWidth-width-8)+"px";
       }.bind(this);
     }
     this.id.style.top=top+"px";
    
     this.interId=setInterval(this.scroll.bind(this),20);
   },
   scroll:function(){
     this.stmnStartPoint = parseInt(this.id.style.top, 10);
     this.stmnEndPoint =document.documentElement.scrollTop+ this.top;
     if(navigator.userAgent.indexOf("Chrome")>0){
       this.stmnEndPoint=document.body.scrollTop+this.top;  
     }
     if ( this.stmnStartPoint != this.stmnEndPoint ) {
         this.stmnScrollAmount = Math.ceil( Math.abs( this.stmnEndPoint - this.stmnStartPoint ) / 15 );
         this.id.style.top = parseInt(this.id.style.top, 10) + ( ( this.stmnEndPoint<this.stmnStartPoint ) ? -this.stmnScrollAmount : this.stmnScrollAmount )+"px";
     }
   }
}
//漂浮广告类
var move_ad=Class.create();
move_ad.prototype={
   initialize:function(imgOption,initPosition,delay){
     this.imgOptions=Object.extend({url:"",link:"",alt:"",width:120,height:120},imgOption||{});
     this.adPosition=Object.extend({left:40,top:120},initPosition||{});
     this.delay =delay;
     this.step = 1;
     this.herizonFlag=true;
     this.verticleFlag=true;
     this.id="ad_move_sg";
     var vHtmlString="<div id='"+this.id+"' style='position:absolute; left:"+this.adPosition.left+"px; top:"+this.adPosition.top+"px; width:"+this.imgOptions.width+"px;";
     vHtmlString+=" height:"+this.imgOptions.height+"px; z-index:10;'><a href='"+this.imgOptions.link+"' target='_blank' title='"+this.imgOptions.alt+"'><img src='"+this.imgOptions.url+"' width='"+this.imgOptions.width+"' height='"+this.imgOptions.height+"' style='border:none;' alt='"+this.imgOptions.alt+"' /></a></div>";
     document.write(vHtmlString);
     this.id=$(this.id);
     this.intervalId=setInterval(this.scroll.bind(this),this.delay);
     this.id.onmouSEOver=this.stop.bind(this);
     this.id.onmouseout=this.start.bind(this);
   },
   scroll:function(){
     var L=T=0;
     var B=document.documentElement.clientHeight-this.id.offsetHeight;
     var R=document.documentElement.clientWidth-this.id.offsetWidth;
     this.id.style.left=this.adPosition.left+document.documentElement.scrollLeft+"px";
     this.id.style.top=this.adPosition.top+document.documentElement.scrollTop+"px";
     this.adPosition.left =this.adPosition.left + this.step*(this.herizonFlag?1:-1);
     if (this.adPosition.left < L) { this.herizonFlag = true; this.adPosition.left = L;}
     if (this.adPosition.left > R){ this.herizonFlag = false; this.adPosition.left = R;}
     this.adPosition.top =this.adPosition.top + this.step*(this.verticleFlag?1:-1);
     if(this.adPosition.top <= T){ this.verticleFlag=true; this.adPosition.top=T;}
     if(this.adPosition.top >= B){ this.verticleFlag=false; this.adPosition.top=B; }
   },
   stop:function(){
     clearInterval(this.intervalId);  
   },
   start:function(){
     this.intervalId=setInterval(this.scroll.bind(this),this.delay);  
   }
}

Tags:JavaScript 对联 广告

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