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主頁 > 網站建設 > 建站知識 > DEDECMS廣告輪換代碼(幻燈效果)

DEDECMS廣告輪換代碼(幻燈效果)

POST TIME:2017-12-29 23:06

作用:

廣告輪換

效果:

本站(571免費空間:http://www.571free.com/)頭部中間圖片廣告

優勢:

每5秒切換一次,一個廣告位展現N個廣告

大大提高了廣告位置的利用率

且廣告處于動態方式,實時更換,更吸引人。

劣勢:

網頁需要多加載3個圖片,不過對于GIF格式的圖片,實在說不上是大,對于網頁速度的影響還是有限的

代碼展現:

 

 <script LANGUAGE="javascript">
<!--
var cpAD=new Array(); 
var cpADlink=new Array(); 
var cpADmsg=new Array(); 
//定義了5個數組
var adNum=5; 
var coll=0;

//ad/1.html 那時你鏈接的廣告地址

cpAD[0]="/banners/ad/1.gif"; 
cpADlink[0]="http://count.chanet.com.cn/click.cgi?a=294504&d=131883&u=&e="; 
cpADmsg[0]="1";

cpAD[1]="/banners/ad/2.gif"; 
cpADlink[1]="http://count.chanet.com.cn/click.cgi?a=294504&d=18290&u=&e="
cpADmsg[1]="2";

cpAD[2]="/banners/ad/3.gif"; 
cpADlink[2]="http://count.chanet.com.cn/click.cgi?a=294504&d=37894&u=&e="; 
cpADmsg[2]="3";

var preloadedimages=new Array(); 
for (i=1;i<cpAD.length;i++){ 
preloadedimages[i]=new Image(); 
preloadedimages[i].src=cpAD[i]; 
}

//跳轉的URL地址
function jump2url()

jumpUrl=cpADlink[adNum]; 
jumpTarget='_blank'; 
if (jumpUrl != '')

        if (jumpTarget != '')
                window.open(jumpUrl,jumpTarget); 
        else location.href=jumpUrl; 
        } 
}

//圖片變化的函數
function changeimg(n)
{
        adNum=n;
        switch(adNum)
        {
        case 0:
        {
                window.img1.src="banners/1-2.gif";
                window.img2.src="banners/2.gif";
                window.img3.src="banners/3.gif";
                window.img4.src="banners/4.gif";
                window.img5.src="banners/5.gif";
                break;
        }
        case 1:
        {
                window.img1.src="banners/1.gif";
                window.img2.src="banners/2-2.gif";
                window.img3.src="banners/3.gif";
                window.img4.src="banners/4.gif";
                window.img5.src="banners/5.gif";
                break;
        }
        case 2:
        {
                window.img1.src="banners/1.gif";
                window.img2.src="banners/2.gif";
                window.img3.src="banners/3-2.gif";
                window.img4.src="banners/4.gif";
                window.img5.src="banners/5.gif";
                break;
        }
                case 3:
        {
                window.img1.src="banners/1.gif";
                window.img2.src="banners/2.gif";
                window.img3.src="banners/3.gif";
                window.img4.src="banners/4-2.gif";
                window.img5.src="banners/5.gif";
                break;
        }
                case 4:
        {
                window.img1.src="banners/1.gif";
                window.img2.src="banners/2.gif";
                window.img3.src="banners/3.gif";
                window.img4.src="banners/4.gif";
                window.img5.src="banners/5-2.gif";
                break;
        }
        }
        window.clearInterval(theTimer);
        adNum=adNum-1;
        nextAd();
}
//當點擊時直接跳轉
function nextAd(){ 
coll++;
if(coll>1)
{
switch(adNum+1)
{
        case 5:
        {
                window.img1.src="banners/1-2.gif";
                window.img2.src="banners/2.gif";
                window.img3.src="banners/3.gif";
                window.img4.src="banners/4.gif";
                window.img5.src="banners/5.gif";
                break;
        }
        case 1:
        {
                window.img1.src="banners/1.gif";
                window.img2.src="banners/2-2.gif";
                window.img3.src="banners/3.gif";
                window.img4.src="banners/4.gif";
                window.img5.src="banners/5.gif";
                break;
        }
        case 2:
        {
                window.img1.src="banners/1.gif";
                window.img2.src="banners/2.gif";
                window.img3.src="banners/3-2.gif";
                window.img4.src="banners/4.gif";
                window.img5.src="banners/5.gif";
                break;
        }
        case 3:
        {
                window.img1.src="banners/1.gif";
                window.img2.src="banners/2.gif";
                window.img3.src="banners/3.gif";
                window.img4.src="banners/4-2.gif";
                window.img5.src="banners/5.gif";
                break;
        }
    case 4:
        {
                window.img1.src="banners/1.gif";
                window.img2.src="banners/2.gif";
                window.img3.src="banners/3.gif";
                window.img4.src="banners/4.gif";
                window.img5.src="banners/5-2.gif";
                break;
        }
}
}
if(adNum<cpAD.length-1)adNum++ ; 
else adNum=0; 
setTransition(); 
document.images.cpADrush.src=cpAD[adNum]; 
playTransition(); 
displayStatusMsg();
//定義了輪換時間 5s
theTimer=setTimeout("nextAd()", 5000); 
}

 



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