Tween图层缓动特效演示-JS特效-爱易网页

Tween图层缓动特效演示

日期：2014-05-18　浏览次数：20231 次

以下是程序代码

<!DOCTYPE html>  
<head>  
<title>Tween演示</title>  
<script>
(function(b){var a=(navigator.userAgent.toLowerCase().indexOf("msie")!=-1);var d={setStyle:function(i,g,h){switch(g){case"opacity":if(a){if(i.style.filter.toString().search(/alpha$opacity=\d+$/i)>-1){i.style.filter=i.style.filter.replace(/alpha$opacity=\d+$/i,"alpha(opacity=".concat(h|0).concat(")"))}else{i.style.filter+="alpha(opacity=".concat(h|0,")")}}else{i.style.opacity=(h/100).toString()}break;default:i.style[g]=h+"px";break}},getStyle:function(i,g){var h=i.currentStyle?i.currentStyle[g]:document.defaultView.getComputedStyle(i,null)[g];switch(g){case"opacity":if(a){return Number(i.currentStyle.filter.replace(/alpha$opacity=(\d+)$/i,"$1"))||100}else{return(Number(h)||1)*100}default:return(h.replace("px","")|0)||0}}};var f=function(g){return new c(g)};f.Line=function(h,g,j,i){return j*h/i+g};f.Quad={easeIn:function(h,g,j,i){return j*(h/=i)*h+g},easeOut:function(h,g,j,i){return -j*(h/=i)*(h-2)+g},easeInOut:function(h,g,j,i){if((h/=i/2)<1){return j/2*h*h+g}return -j/2*((--h)*(h-2)-1)+g}};f.Cubi={easeIn:function(h,g,j,i){return j*(h/=i)*h*h+g},easeOut:function(h,g,j,i){return j*((h=h/i-1)*h*h+1)+g},easeInOut:function(h,g,j,i){if((h/=i/2)<1){return j/2*h*h*h+g}return j/2*((h-=2)*h*h+2)+g}};f.Quar={easeIn:function(h,g,j,i){return j*(h/=i)*h*h*h+g},easeOut:function(h,g,j,i){return -j*((h=h/i-1)*h*h*h-1)+g},easeInOut:function(h,g,j,i){if((h/=i/2)<1){return j/2*h*h*h*h+g}return -j/2*((h-=2)*h*h*h-2)+g}};f.Quin={easeIn:function(h,g,j,i){return j*(h/=i)*h*h*h*h+g},easeOut:function(h,g,j,i){return j*((h=h/i-1)*h*h*h*h+1)+g},easeInOut:function(h,g,j,i){if((h/=i/2)<1){return j/2*h*h*h*h*h+g}return j/2*((h-=2)*h*h*h*h+2)+g}};f.Sine={easeIn:function(h,g,j,i){return -j*Math.cos(h/i*(Math.PI/2))+j+g},easeOut:function(h,g,j,i){return j*Math.sin(h/i*(Math.PI/2))+g},easeInOut:function(h,g,j,i){return -j/2*(Math.cos(Math.PI*h/i)-1)+g}};f.Expo={easeIn:function(h,g,j,i){return(h==0)?g:j*Math.pow(2,10*(h/i-1))+g},easeOut:function(h,g,j,i){return(h==i)?g+j:j*(-Math.pow(2,-10*h/i)+1)+g},easeInOut:function(h,g,j,i){if(h==0){return g}if(h==i){return g+j}if((h/=i/2)<1){return j/2*Math.pow(2,10*(h-1))+g}return j/2*(-Math.pow(2,-10*--h)+2)+g}};f.Circ={easeIn:function(h,g,j,i){return -j*(Math.sqrt(1-(h/=i)*h)-1)+g},easeOut:function(h,g,j,i){return j*Math.sqrt(1-(h=h/i-1)*h)+g},easeInOut:function(h,g,j,i){if((h/=i/2)<1){return -j/2*(Math.sqrt(1-h*h)-1)+g}return j/2*(Math.sqrt(1-(h-=2)*h)+1)+g}};f.Elas={easeIn:function(i,g,m,l,h,k){if(i==0){return g}if((i/=l)==1){return g+m}if(!k){k=l*0.3}if(!h||h<Math.abs(m)){h=m;var j=k/4}else{var j=k/(2*Math.PI)*Math.asin(m/h)}return -(h*Math.pow(2,10*(i-=1))*Math.sin((i*l-j)*(2*Math.PI)/k))+g},easeOut:function(i,g,m,l,h,k){if(i==0){return g}if((i/=l)==1){return g+m}if(!k){k=l*0.3}if(!h||h<Math.abs(m)){h=m;var j=k/4}else{var j=k/(2*Math.PI)*Math.asin(m/h)}return(h*Math.pow(2,-10*i)*Math.sin((i*l-j)*(2*Math.PI)/k)+m+g)},easeInOut:function(i,g,m,l,h,k){if(i==0){return g}if((i/=l/2)==2){return g+m}if(!k){k=l*(0.3*1.5)}if(!h||h<Math.abs(m)){h=m;var j=k/4}else{var j=k/(2*Math.PI)*Math.asin(m/h)}if(i<1){return -0.5*(h*Math.pow(2,10*(i-=1))*Math.sin((i*l-j)*(2*Math.PI)/k))+g}return h*Math.pow(2,-10*(i-=1))*Math.sin((i*l-j)*(2*Math.PI)/k)*0.5+m+g}};f.Back={easeIn:function(h,g,k,j,i){if(i==undefined){i=1.70158}return k*(h/=j)*h*((i+1)*h-i)+g},easeOut:function(h,g,k,j,i){if(i==undefined){i=1.70158}return k*((h=h/j-1)*h*((i+1)*h+i)+1)+g},easeInOut:function(h,g,k,j,i){if(i==undefined){i=1.70158}if((h/=j/2)<1){return k/2*(h*h*(((i*=(1.525))+1)*h-i))+g}retur</div></div>

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