本專案為二元樹狀圖的需求，以功能為導向設計的Demo，建議以桌機裝置(1920*1200)瀏覽。
Run ng serve for a dev server. Navigate to http://localhost:4200/. The application will automatically reload if you change any of the source files.
Run ng generate component component-name to generate a new component. You can also use ng generate directive|pipe|service|class|guard|interface|enum|module.
Run ng build to build the project. The build artifacts will be stored in the dist/ directory.
測試時以 Mockoon 模擬 API 串接，測試用的JSON檔放在 assets 資料夾，如有需要可使用。