简约版：
function getStyle(obj, name)
{
if(obj.currentStyle)
{
return obj.currentStyle[name];
}
else
{
return getComputedStyle(obj, false)[name];
}
} function startMove(obj, attr, iTarget, fnEnd)
{
clearInterval(obj.timer);
obj.timer=setInterval(function (){
var cur=0; if(attr=='opacity')
{
cur=Math.round(parseFloat(getStyle(obj, attr))*100);
}
else
{
cur=parseInt(getStyle(obj, attr));
} var speed=(iTarget-cur)/6;
speed=speed>0?Math.ceil(speed):Math.floor(speed); if(cur==iTarget)
{
clearInterval(obj.timer); if(fnEnd)fnEnd();
}
else
{
if(attr=='opacity')
{
obj.style.filter='alpha(opacity:'+(cur+speed)+')';
obj.style.opacity=(cur+speed)/100;
}
else
{
obj.style[attr]=cur+speed+'px';
}
}
}, 30);
}
完整版：
function getStyle(obj, name)
{
if(obj.currentStyle)
{
return obj.currentStyle[name];
}
else
{
return getComputedStyle(obj, false)[name];
}
} //startMove(oDiv, {width: 400, height: 400}) function startMove(obj, json, fnEnd)
{
clearInterval(obj.timer);
obj.timer=setInterval(function (){
var bStop=true; //假设：所有值都已经到了 for(var attr in json)
{
var cur=0; if(attr=='opacity')
{
cur=Math.round(parseFloat(getStyle(obj, attr))*100);
}
else
{
cur=parseInt(getStyle(obj, attr));
} var speed=(json[attr]-cur)/6;
speed=speed>0?Math.ceil(speed):Math.floor(speed); if(cur!=json[attr])
bStop=false; if(attr=='opacity')
{
obj.style.filter='alpha(opacity:'+(cur+speed)+')';
obj.style.opacity=(cur+speed)/100;
}
else
{
obj.style[attr]=cur+speed+'px';
}
} if(bStop)
{
clearInterval(obj.timer); if(fnEnd)fnEnd();
}
}, 30);
}