layui loading添加刪除

<link rel="stylesheet" type="text/css" href="./lib/layui/css/layui.mobile.css">
<script src="./lib/layui/layui.all.js"></script>


var layer = layui.layer;

//顯示
var loading = layer.load(2, {
    // shade: {shade: [0.1, '#393D49']},
    // time: 5*1000
  });

//關閉
layer.close(loading);