前言：前段時間一直都好忙也就好久沒有寫些東西了，最近手上的事剛好告些段落了，把以前空寫的寫插件都拿出來分享下吧，希望對大家有些幫助，也希望有高手能幫忙指點下我的寫不足和錯誤，一直以來自己寫的東西都是在用，性能方面個人只能盡量靠近問題還很多……真心求指點；
插件簡介：執行漸隱等動畫效果，可以這個插件為一個附加插件 可以配合前面我發的一個彈出層 等等之類的東西用增加js展示的趣味性，
使用方法：在下面的js代碼里面前面寫了，大家可以看看直接復制粘貼就可以用了有問題可以聯系我</p
JS代碼如下 展示方式可以復制下面的HTML查看
[javascript]
/*
createByTommy_20110525
emial:@csslife@163.com
用途：
執行漸隱等動畫效果
傳入參數說明：
1、第一個參數為需要變換對象或ID；
2、第二個參數為一個對象包含：
1)、sty->變換對象需要改變的屬性，默認為改變寬度（也可以傳非style的屬性比如scrollTop等）
2)、curClass->變換對象完成改變后需要添加的當前類,默認為空
3)、maxVal->改變屬于的最大值，默認為0（如果curClass為寬高等style屬性表示隱藏），當這個要改變的屬性值達到時停止動畫
4)、effect->執行的動畫效果默認為outQuad，如需彈跳效果將其值設置為2
3、最后個參數為可選參數表示當動畫執行完畢后運行的回調函數
*/
//animation
var ani = function(){this.init.apply(this,arguments)}
ani.prototype = {
_id:function(i){
if(!i) return;
return typeof i != "string" && i.nodeType === 1 ? i : document.getElementById(i);
},
init:function(e,s,callback){
this.e = this._id(e);
this.setInit(s||{});
var maxS = parseInt(this.s.maxVal),speed = maxS==0?Math.max(this.getSty(this.e,this.s.sty),1):maxS/5;
this.fun(speed,maxS,callback)
},
formula:function(x){
var f;
switch(this.s.effect){
case 0:
f = "outQuad";
break;
case 1:
f = "inQuad";
break;
case 2:
f = "bounce";
break;
default:
f = "easeInBack";
}
this.tween ={
outQuad:function(pos){return Math.pow(pos, 2)},//outQuad
inQuad:function(pos){return -(Math.pow((pos-1),2)-1)},//inQuad
bounce:function(pos){//bounce
if (pos < (1 / 2.75)) {
return (7.5625 * pos * pos);
} else if (pos < (2 / 2.75)) {
return (7.5625 * (pos -= (1.5 / 2.75)) * pos + .75);
} else if (pos < (2.5 / 2.75)) {
return (7.5625 * (pos -= (2.25 / 2.75)) * pos + .9375);
} else {
return (7.5625 * (pos -= (2.625 / 2.75)) * pos + .984375);
}
},
easeInBack:function(pos){var s = 1.70158;return (pos) * pos * ((s + 1) * pos - s);}
};
return this.tween[f](x);
},
findAry:function(attr){
var rg = ["width","height","top","bottom","left","right","margin","padding"];
for(var z in rg){
if(rg[z]==attr) return true;
}
return false;
},
setInit:function(s){
this.s = {
sty:"width",
curClass:"",
maxVal:0,//效果最大值
effect:1//執行效果
}
for(i in s) this.s[i] = s[i];
},
setSty:function(x){
var attr = this.s.sty;
if(this.findAry(attr)){
this.e.style[attr] = x + 'px';
var isIE6 = navigator.appVersion.indexOf("MSIE 6")>-1;
isIE6&&attr=="top"&&(this.e.style[attr] = x + document.documentElement.scrollTop + 'px');
}else if(attr=="opacity"){
this.s.maxVal===1&&(this.e.style.display = "block");
this.e.style.opacity = x;
this.e.style.filter = "alpha(opacity="+x*100+")";
}else{
this.e[this.s.sty] = x
}
},
getSty:function(e,s){
var val = e.currentStyle?e.currentStyle[s]:document.defaultView.getComputedStyle(e,null)[s];
return parseInt(val)||0;
},
fun:function(f,m,callback){
var D = Date,t = new D,e,T = 500,_this = this;
return e = setInterval(function() {
var z = Math.min(1, (new D - t) / T),
c = _this.s.curClass,
curC = _this.e.className;
_this.setSty( + f + (m - f) * _this.formula(z));
if (z == 1) {
if (callback && typeof callback == 'function') callback();
_this.s.maxVal==0&&(_this.e.getAttribute("style"))&&(_this.e.style.display="none");
if(c!=""&&curC.indexOf(c)<0)_this.e.className += c;
clearInterval(e);
}
},10);
}
}
這是這個js展示的第一個DEMO1:
[html]
<!DOCTYPE HTML>
<html>
<head>
<meta charset="gbk">
<title>test</title>
<style>
div,h6,body{padding:0;margin:0;}
div,h6{font:bold 12px/24px 'Tahoma';text-indent:15px;}
.car-mod{position:relative;width:200px;}
.car-menu{width:200px;background:#c06;cursor:pointer;color:#fff;}
.car-box{border:2px solid #c06;width:300px;display:none;}
.car-box h6{background-color:#f5f5f5;background-image:-moz-linear-gradient(#f5f5f5,#fff);}
.things{border-top:1px solid #ccc;padding:50px 15px;}
</style>
</head>
<body>
<div class="car-mod" id="J_car_mod">
<div class="car-menu">購物車</div>
<div class="car-box" id="J_car_box">
<h6>我的購物車</h6>
<div class="things"></div>
</div>
</div>
<script src="animation.source.js"></script>
<script>
(function(){
//線上調用這個插件的時候直接調用animation.js這個是壓縮了的
var D = document,carMod = D.getElementById("J_car_mod"),carBox = D.getElementById("J_car_box"),carControl=true;
//移入顯示
carMod.onmouseover = function(even){
var even = even || window.event,target = even.target || even.srcElement;
if(target.className=="car-menu"){
!!carControl&&(carObj = new ani(carBox,{maxVal:1,sty:"opacity"},function(){carControl=false;}));
carObj = null;
}
//移出隱藏
this.onmouseout = function(even){
var e = even || window.event,
reltg = e.relatedTarget ? e.relatedTarget : e.type == 'mouseout' ? e.toElement : e.fromElement;
while (reltg && reltg != this){reltg = reltg.parentNode;}
if(reltg != this){
!carControl&&(carObj1 = new ani(carBox,{maxVal:0,sty:"opacity"},function(){carControl=true;}));
carObj1 = null;
}
}
}
})()
</script>
</body>
</html>
這個是基于前面的那個彈出層的demo版本的效果，這個效果必須復制前面的彈出層的js哦部分代碼如下
[html]
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>彈出層事例</title>
<style>
div{padding:0;margin:0;}
.wra{margin:0 auto;width:1000px;overflow:hidden;}
.menu{border:1px solid #ccc;background:#000;color:#fff;width:250px;height:30px;font:14px/30px '微軟雅黑';text-align:center;text-shadow:1px 1px 2px #f5f5f5;cursor:pointer;}
.con{border:1px solid #000;background:#fff;padding:30px;width:500px;height:200px;position:fixed;top:-150%;left:50%;margin:-100px 0 0 -250px;display:none;z-index:999;}
.close{display:block;position:absolute;right:10px;top:10px;cursor:pointer;font:bold 14px Arial;-moz-transition:-moz-transform .5s ease-in 0s;}
.close:hover{-moz-transform:rotate(360deg);}
</style>
<style>
</style>
</head>
<body>
<div class="wra">
<div id="J_popup" class="menu">點擊彈出層</div>
<div id="J_popup_con" class="con">
<span id="J_colse" class="close" title="關閉">X</span>
彈出層內容
</div>
<script src="popup.js"></script>
<script src="animation.source.js"></script>
<script>
var D = document,m = D.getElementById("J_popup"),con = D.getElementById("J_popup_con"),cl = D.getElementById("J_colse");
new Popup(m,con,cl,{addFun:function(){new ani("J_popup_con",{sty:"top",maxVal:"350",effect:2})},callBack:function(){con.style.display="block";new ani("J_popup_con",{sty:"top",maxVal:"0"})}})
</script>
</div>
</body>
</html>
