vue 侧边栏
vue Element UI侧边栏

https://www.cnblogs.com/wbjxxzx/p/9943049.html

https://cn.vuejs.org/v2/guide/index.html
https://cli.vuejs.org/zh/guide/
https://router.vuejs.org/zh/

https://element.eleme.cn/#/zh-CN/component/menu#menu-item-attribute

https://panjiachen.github.io/vue-element-admin-site/guide/#features

坑
vue contenteditable 光标回到第一
https://www.cnblogs.com/dreamsqin/p/11466197.html
https://www.jianshu.com/p/c79f99e5fa93