move.js

function move(ele,json,callback){
    clearInterval(ele.t);
    ele.t = setInterval(() => {
        var onoff = true;
        for(var i in json){
            var iNow = parseInt(getStyle(ele,i));
            var speed = (json[i] - iNow)/6;
            speed = speed<0 ? Math.floor(speed) : Math.ceil(speed);
            if(iNow != json[i]){
                onoff = false;
            }
            ele.style[i] = iNow + speed + "px";
        }
        if(onoff){
            clearInterval(ele.t);
            callback && callback();
        }
    }, 30);
}
function getStyle(ele,attr){
    if(ele.currentStyle){
        return ele.currentStyle[attr];
    }else{
        return getComputedStyle(ele,false)[attr];
    }
}

 

来源：https://www.cnblogs.com/hy96/p/11526951.html