need to install Node.js
and nvm is a good Node Version Manager tool
need to install npm - package manager
Install the Angular CLI - npm install -g @angular/cli
Angular 5 and ASP.NET Core
在 Windows 下, 執行 ng build, 出現
cannot be loaded because running scripts is disabled on this system. for more information
Open PowerShell with Administrator access rights
execute Set-ExecutionPolicy RemoteSigned
https://stackoverflow.com/questions/4037939/powershell-says-execution-of-scripts-is-disabled-on-this-system