php浮动广告 JavaScript实现漂浮广告代码的实例总结

我们在打开网页的时候，我们会发现不管是什么网页都会有很多漂浮的广告，有很多人都会在想，这样的效果是怎么实现的呢？今天我们就带大家详细介绍下JavaScript实现漂浮广告代码的实例总结！

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 < L) { xin = true; x = L}

if (x > R){ xin = false; x = R}

y = y + step*(yin?1:-1)

if (y < T) { yin = true; y = T }

if (y > B) { yin = false; y = B }

}

var itl= setInterval("float()", delay)

obj.οnmοuseοver=function(){clearInterval(itl)}

obj.οnmοuseοut=function(){itl=setInterval("float()", delay)}

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visibility: visible;">

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 < 0)

{yon = 1;yPos = 0;}

if (yPos >= (height - Hoffset))

{yon = 0;yPos = (height - Hoffset);}

if (xon)

{xPos = xPos + step;}

else

{xPos = xPos - step;}

if (xPos < 0)

{xon = 1;xPos = 0;}

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();

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-脚本之家

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 < 0)

{yon = 1;yPos = 0;}

if (yPos >= (height - Hoffset))

{yon = 0;yPos = (height - Hoffset);}

if (xon)

{xPos = xPos + step;}

else

{xPos = xPos - step;}

if (xPos < 0)

{xon = 1;xPos = 0;}

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();

总结：

本文介绍了JavaScript实现漂浮广告的几种方法，每个方法使用都不一样，小伙伴们可以根据自己的需求在选择适合自己的，希望对你的工作有所帮助！