js漂浮广告实现代码（合集经典） 符合W3C

第一种 漂浮广告 不符合W3C
JavaScript漂浮广告代码，很不错，代码精简，不过一次只有漂一个，复制就能用了。希望站长朋友喜欢。

漂浮广告

var x = 50,y = 60
var xin = true, yin = true
var step = 1
var delay = 10
var obj=document.getElementById("codefans_net")
function float() {
var L=T=0
var R= document.body.clientWidth-obj.offsetWidth
var B = document.body.clientHeight-obj.offsetHeight
obj.style.left = x + document.body.scrollLeft
obj.style.top = y + document.body.scrollTop
x = x + step*(xin?1:-1)
if (x R){ xin = false; x = R}
y = y + step*(yin?1:-1)
if (y B) { yin = false; y = B }
}
var itl= setInterval("float()", delay)
obj.onmouseover=function(){clearInterval(itl)}
obj.onmouseout=function(){itl=setInterval("float()", delay)}

[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]

第二种 漂浮广告 不符合标准
Js漂浮广告代码，比较经典的浮动广告，到现还很实用，如果你是一位站长的话，这种代码是必备的，希望对你有用处。

漂浮广告

var xPos = 300;
var yPos = 200;
var step = 1;
var delay = 30;
var height = 0;
var Hoffset = 0;
var Woffset = 0;
var yon = 0;
var xon = 0;
var pause = true;
var interval;
img1.style.top = yPos;
function changePos()
{
width = document.body.clientWidth;
height = document.body.clientHeight;
Hoffset = img1.offsetHeight;
Woffset = img1.offsetWidth;
img1.style.left = xPos + document.body.scrollLeft;
img1.style.top = yPos + document.body.scrollTop;
if (yon)
{yPos = yPos + step;}
else
{yPos = yPos - step;}
if (yPos = (height - Hoffset))
{yon = 0;yPos = (height - Hoffset);}
if (xon)
{xPos = xPos + step;}
else
{xPos = xPos - step;}
if (xPos = (width - Woffset))
{xon = 0;xPos = (width - Woffset); }
}

function start()
{
img1.visibility = "visible";
interval = setInterval('changePos()', delay);
}
function pause_resume()
{
if(pause)
{
clearInterval(interval);
pause = false;}
else
{
interval = setInterval('changePos()',delay);
pause = true;
}
}
start();

[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]

上面两个都是不支持标准声明的
第三种 符合W3C的漂浮广告代码

符合W3C的漂浮广告代码-我们

document.write ("
")
document.write (" ")
document.write (" ")
document.write ("
")
var xPos = 300;
var yPos = 200;
var step = 1;
var delay = 8;
var height = 0;
var Hoffset = 0;
var Woffset = 0;
var yon = 0;
var xon = 0;
var pause = true;
var interval;
img1.style.top = yPos;
function changePos()
{
width = document.documentElement.clientWidth;
height = document.documentElement.clientHeight;
Hoffset = img1.offsetHeight;
Woffset = img1.offsetWidth;
img1.style.left = xPos + document.documentElement.scrollLeft;
img1.style.top = yPos + document.documentElement.scrollTop;
if (yon)
{yPos = yPos + step;}
else
{yPos = yPos - step;}
if (yPos = (height - Hoffset))
{yon = 0;yPos = (height - Hoffset);}
if (xon)
{xPos = xPos + step;}
else
{xPos = xPos - step;}
if (xPos = (width - Woffset))
{xon = 0;xPos = (width - Woffset); }
}
function start()
{
img1.visibility = "visible";
interval = setInterval('changePos()', delay);
}
function pause_resume()
{
if(pause)
{
clearInterval(interval);
pause = false;}
else
{
interval = setInterval('changePos()',delay);
pause = true;
}
}
start();

[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]