js变换图片?

页面上有一张图片一秒钟后自动变换下一张,,随机的变换也可以...
js代码怎么写啊??多谢

解决方案 »

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<html>
<head>
<title>首页大图</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style type="text/css">
/* 数字按钮框样式 */
#imgTitle {FILTER:ALPHA(opacity=70);position:relative;left:0px;text-align:left;overflow: hidden;}
#imgTitle_up {left:0px;text-align: left; height:1px; width:inherit; }
#imgTitle_down {left:0px;text-align: right; width:inherit; }
/* 图片框样式 */
.imgClass {border: 0px solid #000;}
/* 图片文字框样式 */
#txtFrom {text-align: center;vertical-align: middle;}
/* 数字按钮样式 */
.button {text-decoration: none;font: bold 9px sans-serif; color:#FFFFFF; width:19px; height:15px; padding:2px 7px; background:url("images/dian_1.gif") center; }
/*渐变
.trans { width:90px; background-color:#000;filter : progid:DXImageTransform.Microsoft.Alpha(startX=0, startY=0, finishX=100, finishY=100,style=1,opacity=0,finishOpacity=40);}
*/
</style>
</head>
<body background="./flash-bgh_3.jpg">
<script language="javascript" type="text/javascript">
var imgWidth=399;              //图片宽
var imgHeight=245;             //图片高
var textFromHeight=0;         //焦点字框高度 (单位为px)
var textStyle="f12";           //焦点字class style (不是连接class)
var textLinkStyle="p1"; //焦点字连接class style
var buttonLineOn="#CC3300";           //button下划线on的颜色
var buttonLineOff="#FFFFFF";          //button下划线off的颜色
var TimeOut=3000;              //每张图切换时间 (单位毫秒);
var imgUrl=new Array();
var imgLink=new Array();
var imgtext=new Array();
var imgAlt=new Array();
var adNum=0;
//焦点字框高度样式表开始
document.write('<style type="text/css">');
document.write('#focuseFrom{width:'+(imgWidth+2)+';margin: 0px; padding:0px;height:'+(imgHeight+textFromHeight)+'px; overflow:hidden;}');
document.write('#txtFrom{height:'+textFromHeight+'px;line-height:'+textFromHeight+'px;width:'+imgWidth+'px;overflow:hidden;}');
document.write('#imgTitle{width:'+imgWidth+';top:-'+(textFromHeight+imgHeight-20)+'px;height:18px}');
document.write('</style>');
document.write('<div id="focuseFrom">');
//焦点字框高度样式表结束
imgUrl[1]='images/jipiaoyi.gif';
imgLink[1]='https://www.tenpay.com/';
imgAlt[1]='出行尽享“机票易”,轻松购票送好礼!';imgUrl[2]='images/wangfu.gif';
imgLink[2]='/MemberCenter/IWantToExchange2.aspx';
imgAlt[2]='网上支付，双倍积分';imgUrl[3]='images/100.jpg';
imgLink[3]='images/rh100q.html';
imgAlt[3]='100强';function changeimg(n)
{
adNum=n;
window.clearInterval(theTimer);
adNum=adNum-1;
nextAd();
}
function goUrl(){
    if(imgLink[adNum]!="#")
        window.open(imgLink[adNum],'_blank');
}
//NetScape开始
if (navigator.appName == "Netscape")
{
function nextAd(){
if(adNum<(imgUrl.length-1))adNum++;
else adNum=1;
theTimer=setTimeout("nextAd()", TimeOut);
document.images.imgInit.src=imgUrl[adNum];
document.images.imgInit.alt=imgAlt[adNum];
    document.getElementById('focustext').innerHTML=imgtext[adNum];
document.getElementById('imgLink').href=imgLink[adNum];}
document.write('<a id="imgLink" href="'+imgLink[1]+'" target=_blank class="p1"><img src="'+imgUrl[1]+'" name="imgInit" width='+imgWidth+' height='+imgHeight+' border=1 alt="'+imgAlt[1]+'" class="imgClass"></a><div id="txtFrom"><span id="focustext" class="'+textStyle+'">'+imgtext[1]+'</span></div>')
document.write('<div id="imgTitle">');
document.write('<div id="imgTitle_down">');
//数字按钮代码开始
for(var i=1;i<imgUrl.length;i++){document.write('<a href="javascript:changeimg('+i+')" class="button" style="cursor:hand" title="'+imgAlt[i]+'">'+i+'</a>');}
//数字按钮代码结束
document.write('</div>');
document.write('</div>');
document.write('</div>');
nextAd();
}
//NetScape结束//IE开始
else
{
var count=0;
for (i=1;i<imgUrl.length;i++) {
if( (imgUrl[i]!="") && (imgLink[i]!="")&&(imgtext[i]!="")&&(imgAlt[i]!="") ) {
count++;
} else {
break;
}
}
function playTran(){
if (document.all)
imgInit.filters.revealTrans.play();
}
var key=0;
function nextAd(){
if(adNum<count)adNum++ ;
else adNum=1;

if( key==0 ){
key=1;
} else if (document.all){
imgInit.filters.revealTrans.Transition=6;
imgInit.filters.revealTrans.apply();
                   playTran();
    }
document.images.imgInit.src=imgUrl[adNum];
document.images.imgInit.alt=imgAlt[adNum];
document.getElementById('link'+adNum).style.color=buttonLineOn;
for (var i=1;i<=count;i++)
{
   if (i!=adNum){document.getElementById('link'+i).style.color=buttonLineOff;}
}
    focustext.innerHTML=imgtext[adNum];
theTimer=setTimeout("nextAd()", TimeOut);
}
document.write('<a target=_self href="javascript:goUrl()"><img style="FILTER: revealTrans(duration=1,transition=5);" src="javascript:nextAd()" width='+imgWidth+' height='+imgHeight+' border=0 vspace="0" name=imgInit class="imgClass"></a>');
document.write('<div id="txtFrom"><span id="focustext" class="'+textStyle+'"></span></div>');
document.write('<div id="imgTitle">');
document.write(' <div id="imgTitle_down"> <a class="trans"></a>');
//数字按钮代码开始
for(var i=1;i<imgUrl.length;i++){document.write('<a id="link'+i+'"  href="javascript:changeimg('+i+')" class="button" style="cursor:hand" title="'+imgAlt[i]+'" onFocus="this.blur()">'+i+'</a>');}
//数字按钮代码结束
document.write('  </div>');
document.write('</div>');
document.write('</div>');
}
//IE结束
</script>
</body>
</html>
<html>
<head>
<title>首页大图</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style type="text/css">
/* 数字按钮框样式 */
#imgTitle {FILTER:ALPHA(opacity=70);position:relative;left:0px;text-align:left;overflow: hidden;}
#imgTitle_up {left:0px;text-align: left; height:1px; width:inherit; }
#imgTitle_down {left:0px;text-align: right; width:inherit; }
/* 图片框样式 */
.imgClass {border: 0px solid #000;}
/* 图片文字框样式 */
#txtFrom {text-align: center;vertical-align: middle;}
/* 数字按钮样式 */
.button {text-decoration: none;font: bold 9px sans-serif; color:#FFFFFF; width:19px; height:15px; padding:2px 7px; background:url("images/dian_1.gif") center; }
/*渐变
.trans { width:90px; background-color:#000;filter : progid:DXImageTransform.Microsoft.Alpha(startX=0, startY=0, finishX=100, finishY=100,style=1,opacity=0,finishOpacity=40);}
*/
</style>
</head>
<body background="./flash-bgh_3.jpg">
<script language="javascript" type="text/javascript">
var imgWidth=399;              //图片宽
var imgHeight=245;             //图片高
var textFromHeight=0;         //焦点字框高度 (单位为px)
var textStyle="f12";           //焦点字class style (不是连接class)
var textLinkStyle="p1"; //焦点字连接class style
var buttonLineOn="#CC3300";           //button下划线on的颜色
var buttonLineOff="#FFFFFF";          //button下划线off的颜色
var TimeOut=3000;              //每张图切换时间 (单位毫秒);
var imgUrl=new Array();
var imgLink=new Array();
var imgtext=new Array();
var imgAlt=new Array();
var adNum=0;
//焦点字框高度样式表开始
document.write('<style type="text/css">');
document.write('#focuseFrom{width:'+(imgWidth+2)+';margin: 0px; padding:0px;height:'+(imgHeight+textFromHeight)+'px; overflow:hidden;}');
document.write('#txtFrom{height:'+textFromHeight+'px;line-height:'+textFromHeight+'px;width:'+imgWidth+'px;overflow:hidden;}');
document.write('#imgTitle{width:'+imgWidth+';top:-'+(textFromHeight+imgHeight-20)+'px;height:18px}');
document.write('</style>');
document.write('<div id="focuseFrom">');
//焦点字框高度样式表结束
imgUrl[1]='images/jipiaoyi.gif';
imgLink[1]='https://www.tenpay.com/';
imgAlt[1]='出行尽享“机票易”,轻松购票送好礼!';imgUrl[2]='images/wangfu.gif';
imgLink[2]='/MemberCenter/IWantToExchange2.aspx';
imgAlt[2]='网上支付，双倍积分';imgUrl[3]='images/100.jpg';
imgLink[3]='images/rh100q.html';
imgAlt[3]='100强';function changeimg(n)
{
adNum=n;
window.clearInterval(theTimer);
adNum=adNum-1;
nextAd();
}
function goUrl(){
    if(imgLink[adNum]!="#")
        window.open(imgLink[adNum],'_blank');
}
//NetScape开始
if (navigator.appName == "Netscape")
{
function nextAd(){
if(adNum<(imgUrl.length-1))adNum++;
else adNum=1;
theTimer=setTimeout("nextAd()", TimeOut);
document.images.imgInit.src=imgUrl[adNum];
document.images.imgInit.alt=imgAlt[adNum];
    document.getElementById('focustext').innerHTML=imgtext[adNum];
document.getElementById('imgLink').href=imgLink[adNum];}
document.write('<a id="imgLink" href="'+imgLink[1]+'" target=_blank class="p1"><img src="'+imgUrl[1]+'" name="imgInit" width='+imgWidth+' height='+imgHeight+' border=1 alt="'+imgAlt[1]+'" class="imgClass"></a><div id="txtFrom"><span id="focustext" class="'+textStyle+'">'+imgtext[1]+'</span></div>')
document.write('<div id="imgTitle">');
document.write('<div id="imgTitle_down">');
//数字按钮代码开始
for(var i=1;i<imgUrl.length;i++){document.write('<a href="javascript:changeimg('+i+')" class="button" style="cursor:hand" title="'+imgAlt[i]+'">'+i+'</a>');}
//数字按钮代码结束
document.write('</div>');
document.write('</div>');
document.write('</div>');
nextAd();
}
//NetScape结束//IE开始
else
{
var count=0;
for (i=1;i<imgUrl.length;i++) {
if( (imgUrl[i]!="") && (imgLink[i]!="")&&(imgtext[i]!="")&&(imgAlt[i]!="") ) {
count++;
} else {
break;
}
}
function playTran(){
if (document.all)
imgInit.filters.revealTrans.play();
}
var key=0;
function nextAd(){
if(adNum<count)adNum++ ;
else adNum=1;

if( key==0 ){
key=1;
} else if (document.all){
imgInit.filters.revealTrans.Transition=6;
imgInit.filters.revealTrans.apply();
                   playTran();
    }
document.images.imgInit.src=imgUrl[adNum];
document.images.imgInit.alt=imgAlt[adNum];
document.getElementById('link'+adNum).style.color=buttonLineOn;
for (var i=1;i<=count;i++)
{
   if (i!=adNum){document.getElementById('link'+i).style.color=buttonLineOff;}
}
    focustext.innerHTML=imgtext[adNum];
theTimer=setTimeout("nextAd()", TimeOut);
}
document.write('<a target=_self href="javascript:goUrl()"><img style="FILTER: revealTrans(duration=1,transition=5);" src="javascript:nextAd()" width='+imgWidth+' height='+imgHeight+' border=0 vspace="0" name=imgInit class="imgClass"></a>');
document.write('<div id="txtFrom"><span id="focustext" class="'+textStyle+'"></span></div>');
document.write('<div id="imgTitle">');
document.write(' <div id="imgTitle_down"> <a class="trans"></a>');
//数字按钮代码开始
for(var i=1;i<imgUrl.length;i++){document.write('<a id="link'+i+'"  href="javascript:changeimg('+i+')" class="button" style="cursor:hand" title="'+imgAlt[i]+'" onFocus="this.blur()">'+i+'</a>');}
//数字按钮代码结束
document.write('  </div>');
document.write('</div>');
document.write('</div>');
}
//IE结束
</script>
</body>
</html>
<script language="javascript">
  setInterval('test()', 1000);
  function test()
  {
        document.getElementById("img").src="2.jpg";
  }
  </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <img src="1.jpg"  id="img"/>
    </div>
    </form>
</body>
</html>怎么是页面上的1.jpg和2.jpg能自动变动?
<script language="javascript">
  setInterval('test()', 1000);
  function test()
  {
       var obj=document.getElementById("img");
       if(obj.src=="2.jpg")
       {
           obj.src="1.jpg";
       }
       else
       {
           obj.src="2.jpg";
       }
  }
  </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <img src="1.jpg"  id="img"/>
    </div>
    </form>
</body>
</html>
<script language="Javascript">
window.onload=function(){
var imgs=["http://avatar.profile.csdn.net/A/D/F/2_xwyxwyujj.jpg",
"http://avatar.profile.csdn.net/6/C/B/2_pt1314917.jpg",
"http://avatar.profile.csdn.net/D/B/C/2_accomp.jpg",
"http://avatar.profile.csdn.net/0/2/4/2_CutBug.jpg"
];
var img = document.getElementById("rollImg");
var rollIndex = 0;
setInterval(
    function(){
        if(rollIndex==imgs.length) rollIndex=0;
        img.setAttribute("src",imgs[rollIndex]);
        rollIndex++;
    }
,1000)
}</script>
<img  id="rollImg" src="http://avatar.profile.csdn.net/A/D/F/2_xwyxwyujj.jpg" />