layui 2.8将 upload.render()实例销毁

你可以使用uploadInst.destroy()方法来销毁upload.render()实例，示例如下：

var uploadInst = upload.render({
  elem: '#test',
  url: '/upload/',
  done: function(res){
    console.log(res)
  }
});

// 销毁实例
uploadInst.destroy();