How to achieve sliding door effect in js

<div id="container">
  <img src="images/20190503222903.png"/><!--图片可以自己修改-->
  <img src="images/20190503222943.png"/>
  <img src="images/20190503223003.png"/>
  <img src="images/20190503223514.png"/>
</div>

*{
  margin: 0;
  padding: 0;
  background-color: #ccc;
}
p{
  text-align: center;
}
#container{
  width: 1130px;
  height: 350px;
  margin: 0 auto;
  border-right:1px solid #FF0000;
  border-bottom:1px solid #FF0000;
  overflow: hidden;
  position: relative;
}
#container img{
  width:500px;
  height:350px;
  display: block;
  position: absolute;
  border-bottm:1px solid #FF0000;
}

//加载dom树
window.onload = function(){
//定义盒子
var box=document.getElementById('container');
//定义图片
var imgs=box.getElementsByTagName('img');
//图片宽度
var imgWidth = imgs[0].offsetWidth;
//隐藏宽度
var exposeWidth = 210;
//盒子宽度
var boxWidth = imgWidth + (imgs.length -1) * exposeWidth;
box.style.width='px';
//设置每道门的初始位置
function SetImgsPos(){
for(var i = 1;i<imgs.length;i++){
      imgs[i].style.left = imgWidth + exposeWidth*(i -1)+ &#39;px&#39;;
      }
    }
    SetImgsPos();
     //计算每道门应该移动的距离
    var translate = imgWidth - exposeWidth;
    //为每道门绑定事件
    for(var i=0;i<imgs.length;i++){
      //使用立即调用的函数表达式，为了获得不同的i值
      (function(i){
        imgs[i].onmouseover = function(){
          SetImgsPos();
          //打开门
          for(var j=1;j<=i;j++){
            imgs[j].style.left = parseInt(imgs[j].style.left,10) - translate + &#39;px&#39;;
          }
        }
      })(i);
    }
  }