django模板在javascript刷新时复制菜单栏的问题

I have a django project with multiple pages. One page is refreshed with a javascript that updates an image and a couple of values on the screen. There is a menu that is in the base template (so it is at the top of every page.) The problem is that on the screen that is updated every second, the menu is duplicated below the real one after the refresh is called (other than that, everything is working great.)I have a django project with multiple pages. On