JS动画效果代码2
Untitled Document
function $(pId){
return document.getElementById(pId);
}
function JPos(){
}
JPos.getAbsPos = function(pTarget){
var _x = 0;
var _y = 0;
while(pTarget.offsetParent){
_x += pTarget.offsetLeft;
_y += pTarget.offsetTop;
pTarget = pTarget.offsetParent;
}
_x += pTarget.offsetLeft;
_y += pTarget.offsetTop;
return {x:_x,y:_y};
}
function JAniObj(){
this.obj = null;
this.interval = null;
this.orgPos = null;
this.targetPos = null;
this.orgSize = {w:50,y:50}; //初始长宽
this.targetSize = {w:100,y:100}; //目标长宽
this.step = {x:10,y:10}; //步长 x:x方向 y:y方向
this.alpha = {s:10,e:90,t:10}; //透明度，s初始，e结束,t步长
}
function JAni(){
var self = this;
var aniObjs = {};
this.popup = function(pDiv,pOrgSize,pTargetSize,pStep,pAlpha){
var aniObj = new JAniObj();
aniObjs[pDiv] = aniObj;
with(aniObj){
obj = $(pDiv);
orgPos = JPos.getAbsPos(obj);
orgSize = pOrgSize;
targetSize = pTargetSize;
step = pStep;
alpha = pAlpha;
with(obj.style){
overflow = "hidden";
position = "absolute";
width = pOrgSize.w + "px";
height = pOrgSize.h + "px";
left = orgPos.x + "px";
top = orgPos.y + "px";
if(document.all){
filter = "Alpha(opacity=" + pAlpha.s + ")";
}else
opacity = pAlpha.s / 100;
}
}
aniObj.interval = setInterval("popup_('" + pDiv + "')",10);
}
popup_ = function(pDivId){
pObj = aniObjs[pDivId];
var w = parseInt(pObj.obj.style.width);
var h = parseInt(pObj.obj.style.height);
if(w >= pObj.targetSize.w && h >= pObj.targetSize.h){
clearInterval(pObj.interval);
if(document.all)
pObj.obj.style.filter = "Alpha(opacity=" + pObj.alpha.e + ")";
else
pObj.obj.style.opacity = pObj.alpha.e / 100;
delete aniObjs[pObj.obj.id];
}else{
if(w
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]