#### 单文件递归菜单 使用单文件方式递归生成菜单。 因组件内部会动态更改`a-sub-menu`的属性，如果拆分成单文件，无法将属性挂载到`a-sub-menu`上，你需要自行声明属性并挂载。为了实现方便，避免了属性的声明，本示例将其声明为函数式组件，并将所有属性挂载到`a-sub-menu`上。 #### Single file recursive menu Use the single file method to recursively generate menus. The properties of `a-sub-menu` are dynamically changed inside the component. If you split the file into a single file and you cannot mount the `props` to `a-sub-menu`, you need to declare the `props` and mount it yourself. For the sake of convenience, the declaration of the `props` is avoided. This example declares it as a functional component and mounts all properties to `a-sub-menu`. ```html ```