Javascript代码添加了不应该存在的东西

I am creating a website and I want to style a menu that only shows up one way when displayed at certain px width. I will later change the code to do an if statement that checks if it is a touch screen. But, for now I must px width to test the code. However, my current code even though it loads correctly a certain width after I change to a higher width it still adds my label and input. I am creating a website and I want to style a m