move.js

function startMove(obj,json,fn){
    var flag=true;//标志所有运动是否到达目标值
    clearInterval(obj.timer);
    obj.timer=setInterval(function(){
    for(var attr in json){
    var curr=0;
    //判断是否为透明度
    if(attr==‘opacity‘){
        curr=Math.round(parseFloat(getStyle(obj,attr))*100);
    }else{
        curr=parseInt(getStyle(obj,attr));
    }
    //移动速度处理
    var speed=0;
    speed=(json[attr]-curr)/10;
    speed=speed>0?Math.ceil(speed):Math.floor(speed);
    if(curr!=json[attr]){
        flag=false;
    }
    if (attr==‘opacity‘) {
        obj.style.filter=‘alpha(opacity:‘+(curr+speed)+")";
        obj.style.opacity=(curr+speed)/100;
    }else{
        obj.style[attr]=curr+speed+‘px‘;
    }
}
    if(flag){
        clearInterval(obj.timer);
        if(fn){
            fu();
        }
    }
},30);
}

//取样式
    function getStyle(obj,attr){
        if(obj.currentStyle){//IE取样式
            return obj.currentStyle[attr];
        }else{
        return getComputedStyle(obj,false)[attr];
        }

}