javascript 缓慢出现的广告层效果
分类：实例代码
本章节分享一段代码实例，它实现了广告层从右侧缓慢出现的效果。
代码算是比较长，其实比较简单，这里就不进行分析了，如果有任何问题可以更贴留言。
代码实例如下:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="http://www.pipipi.net/" />
<title>前端教程网</title>
<style type="text/css">
#abc{
border:1px solid #003399;
position:absolute;
height:150px;
width:220px;
right:-100%;
}
#abc #tit{
background-color:#0066FF;
position:relative;
height:100%;
width:20px;
color:#FFFFFF;
text-align:center;
float:left;
}
#kong{
position:absolute;
width:100%;
top:100px;
overflow:hidden;
top:100px;
right:0px;
}
.right{
float:right;
width:190px;
padding:5px;
}
</style>
<script>
var $=function(d){
return document.getElementById(d)
};
var CLS={
create:function(){
return function(){
this.$ADD=function(fn){CLS.add(this,fn)};
this.init.apply(this, arguments);
}
},
add:function (obj,fn){
fn.apply(obj,arguments);
},
enterFrame:function (){
this.onEnterFrame=function (){};
this.$PLAY = function (g){
this.enterFrameP = this.enterFrameP || 10;
this.CLStimeIndex = CLS.ontimes.length;
CLS.ontimes.push(this);
window.clearTimeout(this.enterFrameTimeout);
window.clearInterval(this.enterFrameInterval);
if(g)
this.enterFrameTimeout = window.setTimeout('CLS.ontimes['+this.CLStimeIndex+'].enterFrameInterval=window.setInterval("CLS.ontimes['+this.CLStimeIndex+'].onEnterFrame()",'+this.enterFrameP+')',parseInt(g*1000));
else
this.enterFrameInterval = window.setInterval("CLS.ontimes["+this.CLStimeIndex+"].onEnterFrame()",this.enterFrameP);
}
this.$STOP = function (){
window.clearInterval(this.enterFrameInterval);
}
this.$SET = function (p){
this.enterFrameP = p;
}
},
ontimes:new Array()
};
CLS.Marquee = CLS.create();
CLS.Marquee.prototype = {
init:function (button,box,speed){
this.box = $(box);
this.tit = $(button)
this.kong = $("kong");
this.onOpen = true;
this.show = false;
this.time = 0;
this.speed = speed;
this.kong.style.height = this.box.offsetHeight +"px";
this.Maxw = this.box.offsetWidth-this.tit.offsetWidth;
this.box.style.right = -this.box.offsetWidth + "px";
this.boxTop = this.kong.offsetTop;
var _t = this;
this.tit.onclick = function (){
this.show = true;
if(_t.onOpen){
_t.onEnterFrame = _t.close;
_t.onOpen = false;
}
else{
_t.onEnterFrame = _t.open;
_t.onOpen = true;
}
_t.$PLAY();
};
this.$ADD(CLS.enterFrame);
this.onEnterFrame = this.open;
this.$PLAY();
},
open:function(){
this.tit.innerHTML = "-";
var _r = parseInt(this.box.style.right);
var _b = (0 - _r)/30;
this.box.style.right = (_r + _b) +"px";
this.kong.style.top = (document.documentElement.scrollTop + this.boxTop) +"px";
if(_b==0 && !this.show){
this.time +=10;
if(this.time>=this.speed*1000){
this.show = true;
this.onOpen = false;
this.$STOP();
this.onEnterFrame = this.close;
this.$PLAY();
}
}
},
close:function (){
this.tit.innerHTML = "+";
var _r = parseInt(this.box.style.right);
var _b = (-this.Maxw - _r)/5;
this.box.style.right = Math.round(_r + _b) +"px";
this.kong.style.top = (document.documentElement.scrollTop + this.boxTop) +"px";
}
};
window.onload = function (){
setTimeout(function(){new CLS.Marquee("tit","abc",10)},3000);
};
</script>
</head>
<body style="margin:0px;">
<div id="kong">
<div id="abc">
<div id="tit">-</div>
<div class="right">
<a href="/">前端教程网</a></div>
</div>
</div>
右侧广告3秒后弹出
</body>
</html>