【Layui】layui自动关闭页面

layui
<script>
  layui.use('layer',function(){
    var layer = layui.layer;
    layer.ready(function(){
      layer.msg('操作成功，3秒后会自动关闭当前页面！', {offset: '15px',icon: 1,time: 3000}, function(){
        var index = parent.layer.getFrameIndex(window.name);
        parent.layer.close(index)
        window.parent.location.reload();
        return false;
      });
    });
  });
</script>
js
<div id="box">
    <p>页面在
    <span id="Os">5</span>
     s后跳转
    </p>
</div>
<script>
    var Os=document.getElementById("Os");
    var num=5;
    var timer=setInterval(function () {
        num--;
        Os.innerText=num;
        if(num==0){
            window.location.href="https://www.baidu.com/";
        }
    },1000)
</script>