可折叠的自动伸缩侧边菜单，简洁实用，可以自定义哪个展开折叠，只要定义demo中的scr ipt【0】，控制参数，可相对应的变量名字即可。有智能手机、手机配件、平板电脑、操作系统、老人机、插卡固话等栏目菜单内容。-Foldable automatic retractable side menu, simple and practical, you can customize which expand collapse, as long as the definition demo of the scr ipt [0], control parameters, corresponding to the variable name. Smart phones, mobile phone accessories, tablet computer, the operating system, old machine, and other columns fixed menu card content.