减小字体
增大字体- ·上一篇文章：javascript逐渐变色的字
- ·下一篇文章：javascript右下解弹出广告代码
当前位置：K88软件开发 → 文章中心 → 编程语言 → JavaScript → JS01 → 文章内容
javascript伸缩广告代码
效果：打开页面时，出现一个大幅广告，过一段时间后，大幅广告缩小成一个小幅广告，宽度不变，高度变小，并且带有缩小动画。点击运行可看到效果。
以下内容为程序代码<
!DOCTYPE HTML PUBLIC"
-//W3C//DTD HTML 4.0 Transitional//EN"
>
<
html>
<
head>
<
style>
html,body
{margin:0
font-size:12px}img
{border:none}p
{border-top:5px solid
#660000
padding:40px
background:
#999900
height:1500px
margin:0px}
<
/style>
<
script>
var showAD =
{
curve: function(t, b, c, d, s)
{
if ((t /= d / 2) <
1) return c / 2 * t * t * t + b
return c / 2 * ((t -= 2) * t * t + 2) + b
},
fx: function(from, to, playTime, onEnd)
{
var Me = this,
who = this.adWrap,
position = 0,
changeVal = to - from,
curve = this.curve
playTime = playTime / 10
who.style.overflow = 'hidden'
function _run()
{
if (position++<
playTime)
{
who.style.height = Math.max(1, Math.abs(Math.ceil(curve(position, from, changeVal, playTime)))) + "
px"
setTimeout(_run, 10)
} else
{
onEnd &
&
onEnd.call(Me, to)
}
}
_run()
},
init: function(info)
{
var Me = this,
loadImg = new Image
loadImg.src = info.endImgURL
window.onload=function()
{
Me.endImgURL = info.endImgURL
Me.img = document.getElementById(info.imgID)
Me.adWrap = document.getElementById(info.adWrapID)
var max = Me.img.height
setTimeout(function()
{
Me.fx(max, 0, 500,
function(x)
{
this.img.src = this.endImgURL
this.curve = function(t, b, c, d)
{
if ((t /= d) <
(1 / 2.75))
{
return c * (7.5625 * t * t) + b
} else if (t <
(2 / 2.75))
{
return c * (7.5625 * (t -= (1.5 / 2.75)) * t + .75) + b
} else if (t <
(2.5 / 2.75))
{
return c * (7.5625 * (t -= (2.25 / 2.75)) * t + .9375) + b
} else
{
return c * (7.5625 * (t -= (2.625 / 2.75)) * t + .984375) + b
}
}
this.fx(0, this.img.height,600)
})
},
info.timeout || 1000)
}
}
}
showAD.init(
{
adWrapID: 'ad_box_2009_04',
imgID: 'adImg',
endImgURL: 'http://www.aspprogram.cn/test/a.jpg'
})
<
/script>
<
meta http-equiv="
Content-Type"
content="
text/html
charset=gb2312"
>
<
/head>
<
body>
<
div id="
ad_box_2009_04"
style="
background:BF0008"
>
<
img src=http://www.aspbc.com/Index/showtech/id/"
http://www.aspprogram.cn/test/b.jpg"
id="
adImg"
/>
<
/div>
<
p>
正文<
/p>
<
/body>
<
/html>
javascript伸缩广告代码
